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how does one shut down idle circuits on outboard trip carbs ?
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60 dart
Posted 2012-12-19 1:37 AM (#351747)
Subject: how does one shut down idle circuits on outboard trip carbs ?



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i've never done it before , so hows it done , with photos if possible ,,,,,, thanks -------------------------------------------later
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56Fanatic
Posted 2012-12-19 10:51 AM (#351783 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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What kind of carburetors do you have? On rochester tri-powers, the outer carbs had NO idle circuits, they only had high-speed circuits.
Try reading this article: http://www.hotrod.com/techarticles/engine/hrdp_1210_rochester_tri_p...
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60 dart
Posted 2012-12-19 2:36 PM (#351807 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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the outboard rochester tri-power carbs have no idle circuits because they were factory built without em , thus providing true dumpers . what i have learned is that using three primary carbs with outboard idle still intact are virtually
impossible to set up . they will run too rich . rochester are the ones i'm thinkin about usin though , speedway sells a kit for the 2g that has all the parts needed to setup the 2g as good as the factory ones , allowing the
outboard carbs to be true dumpers only . to some the kits may be a tad pricey at @ 325$ for the basic kit and @370$ with the added correct linkage .
my second choice is to redo a set of holley or stromberg but even with those the base plates gotta be delt with . the main reason is you can't get the throttle plates to close if trying to use all 3 primary carbs , giving a full
time rich setup . i'd have to look again but i think the base plates for the holley and stromberg are @ 250$ per. . since i stated the carbs now , maybe someone can come along and tell it how it is a whole lot
better than i can . ---------------------------------------------------------------later
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Shep
Posted 2012-12-25 11:36 AM (#352474 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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I set up a factory Tri Power last year, and the end carb throttle plates are open very slightly to help stabilize the idle without opening the center carb so much you uncover the idle air port going to a richer circuit, now this engine had a big cam and heads so idle vacuum was low anyway. If you look closely at the 2GC end carbs you will see the plates are not closed tightly.. 2bbl Holleys can be difficult to get right. If you use Holleys watch for worn throttle shafts, very common, you willl never get a proper idle when this happens.

Edited by Shep 2012-12-25 12:51 PM
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DeSotohead
Posted 2012-12-25 2:17 PM (#352491 - in reply to #351807)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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Chuck...

Since I now know you have Rochester 2GC primary carbs for all three, I can tell you better how to disable the ones used as secondaries.

You will need to pull off all the choke mechanism, including the fast idle cam. Plug those holes through the airhorn where the shaft was, and also the vacuum draw hole that went to the choke housing.

Now follow the advice in the HOTROD article, and plug the passages going to the baseplate idle circuit. Use lead shot, NOT set screws. I personally do not like tapping this type of passage.

Remove the idle adjustment screws and also plug those outside holes with either large lead shot or with pieces of round soft aluminum rod from the outside. Or you can fill them with JB Weld.

Now comes the part I suggest that the article leaves out.

Block open your throttle plates, and using JB Weld and a toothpick, put a dab of JB Weld into/onto the throttle bores where the idle circuit slots are. Let it set and with a jewelers/diemakers file polish it down so it is flush with the bore without scoring.
You can also plug the spark ports as well, as these are not needed on the secondary carbs.

Now loosen the throttle plate screws, and close your throttle and wiggle the plates so they seat well against the bore sides. Take your time and do this. It helps to completely remove the idle screw and also the choke rod to do this.

Tighten the screws in the throttle plate back when you can shine a light on the plate and looking from the other side not see visible light. If this cannot be done, then you might have to take some emery cloth and polish the entire bore in the plate area. To do this, you will have to remove the throttle plate. Only do this if you cannot achieve closure any other way.

Afterwards, reassemble the throttle body and check the pump stroke arm to make sure it does not hold the throttle open. The idle screw should only set the throttle plates to a "just closed" condition, without a lot of force from the shaft and lever. Remember that you have engine vacuum pulling the plates to a shut position . If your model 2GC has only the one shared fast idle cam/base idle screw, replace the fast idle cam and use a washer to lock it in place at the idle step. If needed, you can file this step down to ensure plate closure.

I might also recommend that you adjust your accelerator pumps on the end carbs to give a smaller shot than the primary, as the engine will already be running with a pretty decent amount of airflow when they open. Lowest setting to begin with in pump ratio.

Set the linkage adjustment to have the secondaries start to open at about 40% primary carburetor opening, with full opening achieved at the same time as the primary.

Hope this helps.
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60 dart
Posted 2012-12-25 4:30 PM (#352504 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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thanks a million guys . i think i got em going in the right direction .... the stock 2g throttle plates are open just a smidge but i'll lap em in to get near if not dead on seal . from all that i've learned the throttle
plates are the biggest killer of a trip setup . if i can't get the stock ones sealed enough then i'll go from the stock .050 size to the thicker and better .080 size . a lot of people put the secondary linkage on the same side
as the primary linkage , i don't like that setup . it puts the primary linkage too close to the secondary linkage during operation . so , i got long shafts coming to move all secondary movement to the passenger side .
makes for a much cleaner look also . the levers on both secondary carb i'll be using old ones after getting rid of all the excess metal , except for the stops and pump rod hole . i can buy them already done but why , a few mods and cleaning , some paint and they're done . i'll also be changing the primary side linkage to a lesser cluttered one . i'm using a p-600 three bolt with adapters to 4 bolt . i was having a little anxiety about the height of said adapters @ 2" extra height . so i got my other 94 setup off the shelf , put the air cleaners on and measured for differences . using the 2g's versus the 94 setup , they are quite close . the 2g setup is about 1/4" less in height than the 94's , using an air cleaner of 2 3/8" total height . lucked out last night and found a new 16 x 9" billet one on ebay , very , very cheap . it's not exactly what i wanted but will do for now since the bottom has to be modified to accept the trips . once i get everything together i'll post some photos . --------------------------------------------------------------------later

psss . yes , j-b weld can be used to also help seal the throttle plates but there is a compound that was said to be used at the factory , also said can be removed if any carb cleaner
comes into contact with the sealer , it's called DAG213 . if anyone needs some i can dig up the site and pass it on . i'll be using an oiled down rubbing compound to lap em in , "gritty"

Edited by 60 dart 2012-12-25 4:40 PM
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56Fanatic
Posted 2012-12-26 12:14 PM (#352603 - in reply to #352504)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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the tighter the throttle plates on the end carbs close, the better your idle will be, and easier to set too!
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60 dart
Posted 2012-12-26 1:54 PM (#352615 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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from all that i've read , losing vacuum in the secondaries due to poor fitting throttle plates is the most common error . i've been thinkin for a bit now that i'm going with the thicker .080 plates and lapping
them in to a tight fit . i'll have both sets of long shafts @ .050 and .080 for blade thickness . using the stock blades to lap in may prove a little difficult considering they are very close to perpendicular to the
carb bore already and may cause sticking . i've been looking at the bores to see just why a sealer might be needed . i don't feel any reason at all for these carbs as they are smooth . sittin here writin
this i'm also wondering how many how many trip setups are sittin on shelves just because they couldn't be tuned because of poor fitting secondary throttle plates . i'm bettin "tons" -------------------later
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60 dart
Posted 2012-12-26 1:54 PM (#352616 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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from all that i've read , losing vacuum in the secondaries due to poor fitting throttle plates is the most common error . i've been thinkin for a bit now that i'm going with the thicker .080 plates and lapping
them in to a tight fit . i'll have both sets of long shafts @ .050 and .080 for blade thickness . using the stock blades to lap in may prove a little difficult considering they are very close to perpendicular to the
carb bore already and may cause sticking . i've been looking at the bores to see just why a sealer might be needed . i don't feel any reason at all for these carbs as they are smooth . sittin here writin
this i'm also wondering how many how many trip setups are sittin on shelves just because they couldn't be tuned because of poor fitting secondary throttle plates . i'm bettin "tons" -------------------later
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DepsilonD
Posted 2012-12-26 5:19 PM (#352641 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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Please keep this thread going Chuck. Gary P had recommended that I use the Rochester for my P600 Set-up but I'm still playing the endless "back and forth" game in my head on the Stromberg v Holley v Rochester v Demon v Edelbrock 94.
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60 dart
Posted 2012-12-26 5:54 PM (#352645 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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sure thing , might be a little bit between posts ! i will say now though , the 94's versus the 2g , the g's are easier to work on "less parts" , the setup is more cost effective , with the g's parts are easier
to find , except the initial find "used" , time consuming . i can though help you to find rebuilt for a ton less than the rebuilt 97's or 94's . although if you have time to search , g's aint real hard to find needing rebuilt and
the rebuild itself really doesn't have much to it . if you like the sound of a full open quad , you'll truly love the sound of trips wide open ! trips over a 600 holley , yes sir , anyday ! ----------------------------------later
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60 dart
Posted 2012-12-28 2:36 PM (#352910 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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got the eelco linkage , oversize throttle plates with long shafts and 3m super duty rubbing compound today . once i get everything in one pile , i'll start the process of fitting . the 3m compound is
advertised to remove 1100 grit marks , should work real good . ------------------------------------------------------------later
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DepsilonD
Posted 2012-12-28 2:41 PM (#352913 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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I'm anxiously awaiting the results.
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60 dart
Posted 2012-12-29 1:34 PM (#353005 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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after seeing the 60 plymouth , crossram on the other thread , i wonder if i could build an air cleaner box to accept 2 crossram air cleaners . well i know i can fab em up but
how many people would i piss off seeing them used in such a manor ----------------------------------------------later
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60 dart
Posted 2012-12-29 2:44 PM (#353018 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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just received the stainless air horn screws and custom brass power valve plugs . still waiting on the stainless carb and adapter fasteners . for the carb studs , i'll be using stainless all thread to make the
process a little better . the bottom stud ends will have stainless lock nuts , with the fabbed studs having straight slots in the tops . the threaded flanges on the carb adapters are only 1/4" thick , so lock nuts
on the stud bottoms will be in order . all that needs done isn't rocket science but will be a little time consuming ---------------------------------------------------------later
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60 dart
Posted 2012-12-29 3:26 PM (#353022 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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this is what i'll be startin with ---------------------------------------------later



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DeSotohead
Posted 2012-12-29 5:34 PM (#353034 - in reply to #353022)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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Chuck...

Looks like none of the carbs have a choke assembly!
How you plan on handling that? Do you have parts to put a plate and shaft/linkage on the center carb?
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60 dart
Posted 2012-12-29 11:57 PM (#353089 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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it is filled hank , not sure if it'll stay that way of not . on these carbs the manual choke is on the throttle side . i really don't like that . i have a spare early 2g with a long
shaft toward passenger side . if i used it , it would have to have fabbed arm to be below the fuel inlets then figure where to put the cable bracket buttttt on the other hand
an edelbrock or maybe holley electric will work . i'd have to dig up the info to say which one for sure -----------------------------------------------later


pssssss . if the electric is used them i can't use bango fuel inlets for sure !


edelbrock

Edited by 60 dart 2012-12-30 12:05 AM




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DeSotohead
Posted 2012-12-30 4:41 PM (#353173 - in reply to #353089)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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Chuck...

Why can't you use flexible braided hose between the carbs?
If so, then you might be able to use a choked carb.
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60 dart
Posted 2012-12-30 5:26 PM (#353177 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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ya buddy , if i use the barb fuel fittings in photo i can use either a manual or the electric . if i use banjo fittings i can only use manual choke . now . the manual choke "oem" on
a 2g is on the throttle side . if i fab up a manual i'll be puttin it on the opposite side . i have an older stromberg ww with the long shaft . i'll be checkin it out to see what can or
can't be done with it . ------------------------------------------------------later
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60 dart
Posted 2013-01-03 12:04 AM (#353688 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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ported the carbs adapters today , not a lot of fun trying to port aluminum , took about 2 1/2 hrs . it was really hard to get any kind of rhythm going
clogged up 2 new deburr bits but they'll clean up . had to take @ 1/8"or more off both end radius's of all 3---------------------------------------------------later
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fast59desoto
Posted 2013-01-03 12:06 AM (#353689 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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charlie prices vintage speed makes large base 2gc dumper base sections thats where i got them for my 46


Edited by fast59desoto 2013-01-03 12:07 AM
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60 dart
Posted 2013-01-05 3:42 PM (#354048 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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in the photo you can see the differences in the width of the base plate between the 2g and 2gc . the long shafts from speedway will only fit the 2g , although stated in their ebay ad
they will fit both . the length of the shaft bore , 2g versus 2gc is @ a 3/8" diff. . i have other carbs though to swap out 3 base plates . with the change in base plates the upper pump lever ,
actuator shaft , along with the corresponding throttle lever , needs changing also . you can also see the throttle lever hole diff. . the lever on the left has already been
trimmed of all excess junk . ---------------------------------------------------later

pssss . i thought i might get away with using the same gaskets , no such luck , so gotta wait for that delivery also . also i didn't mean to infer
the speedway shafts won't fit both models as some have longer throttle shafts some have shorter , they just won't fit the 2gc i have , so be sure
of what you're gettin before gettin in trouble , as i did , even though i knew about the shaft lengths . i just plain forgot !!!!!!!!!!!!!!!

Edited by 60 dart 2013-01-05 5:27 PM




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60 dart
Posted 2013-01-07 5:09 PM (#354302 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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this is wha i rigged to do the lappin of the throttle plates . takes @ hour or so but they "rubbing alcohol" tight . don't laugh , it works 100% @ 300 cycles a minute . about every
5 minutes or so just add a little cuttin compound . i used the alcohol as a leak detector ! -------------------------------------------------------later

psssss . the wire is a bale off an old master cylinder

Edited by 60 dart 2013-01-07 5:14 PM




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DepsilonD
Posted 2013-01-07 5:27 PM (#354304 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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Awesome rig! You are my hero Chuck. I would not have thought about setting up a drill to do the lap'n. Probably would have tried to convince my fiance to open and close the throttle plates 10,000 times while she was watching Dance Moms/Toddlers and Tiaras. You may have saved my future marriage.

Dave
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DeSotohead
Posted 2013-01-07 6:27 PM (#354315 - in reply to #354304)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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Chuck...

That is one fine piece of Appalachian Engineering!
I also like the big nut on the end of the vice handle too.

It just proves you don't need complicated equipment to get the job done.
I need to remember this trick the next time I need a cycling machine that open/closes something repeatedly.
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60 dart
Posted 2013-01-08 12:22 AM (#354353 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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thanks guys , for most of my life , if i needed a small tool or what ever sort of devise to make things more simple i give er a try . most of the time i'll only use whatever once and it's gone . i was
about 8 when my pap showed me why he never used sandpaper for any thing small , he used a shard of glass . i guess from then on i had the bug but when i tell ya i destroyed a lot of things over
the years trying to make them work , believe me , tons . that doodad above took about 2 minutes thought and 5 minutes to assemble . when my wife came home from work she saw what i put
together , she just smiled and shook her head ! if you'll notice the string on the spring , its there for a purpose also . when the plate snaps shut , the spring will twang and was driving me up the wall
with the odd noise ,,,, and the string stops vibration , so no twang noise .......... the vise is a cheapo 5" that belonged to my dad . after he passed i bought it from my mom along with a 3 ton
chain come along . the nut comes off the shaft , i guess to allow for shipping . i been wanting to weld it tight . ----------------------------------------------------------later
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DeSotohead
Posted 2013-01-08 9:37 AM (#354396 - in reply to #354353)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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Chuck....

I think that having the nut on the vise handle is a great idea!
Then if you need for some more lever arm, you can unscrew it, pull the handle out, and slip in a longer rod for more clamping force.

Afterward, you replace the real handle. That way it doesn't get bent......
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60 dart
Posted 2013-01-09 12:32 AM (#354515 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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is there any real reason no one seems to want to use allen set screws and or soldering to fill the vacuum ports , i used both on different
areas , fast and easy !------------------------------------------------------later
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DeSotohead
Posted 2013-01-09 9:06 AM (#354537 - in reply to #354515)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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I don't like the allen set screws because you need to use a bottoming tap to get enough tapped thread distance, for one.

The other is the "swarf" generated, which is sometimes hard to clean.

Soldering is OK, and I have done that, but it requires good cleaning beforehand and afterwards, and if you use the acid flux paste, its messy.
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60 dart
Posted 2013-01-09 12:51 PM (#354575 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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i used 6-32 x 5/16 for the 2 plate top vac. holes and 10-32 x 5/8 to replace the air - fuel screws , with J-B weld under each one . for solderin i used bernzomatic tinning flux . that flux is
absolutely great . the more you use the better the bite . its not like the panel tinning flux sold by eastwood and others , this flux really works . for the cleanup i use a degreaser "mean green" , wash ,
rinse and dry then a mild acid-water bath , hot water rinse and dry . -------------------------------------------------------later
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60 dart
Posted 2013-01-10 12:56 AM (#354623 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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i don't know why i didn't notice before yesterday "Wednesday" that the throttle plate screws on all 6 shafts i received from speedway are at least 1/8in. too short . they don't even go
completely through the shaft . there's no way i'd trust with thread lock alone . i sent them a message explaining , now lets see if they tell me that's how they come , 1/8 short !--------------later
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60 dart
Posted 2013-01-10 1:52 PM (#354682 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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i just received a call back from speedway motors about the plate screws . the gentleman i talked to agreed with me 100% , that they can't be crimped "staked" into place even though they
have the correct cupped ends . he also told me that no one else has ever brought this to their attention but could understand the concern . so now the info is in the loop and from here
a wait and see --------------------------------later
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60 dart
Posted 2013-01-24 3:17 PM (#356588 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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since i'm using stainless and brass fittings , something had to give . all the fitting holes were straight X 18 thread , water , vacuum and hot air choke . i'm using stainless for water , brass for vacuum
and brass plug for hot air . so i retapped all the holes and sunk em deeper for a cleaner look .
i made a mistake and did samples of polished stainless hardware . now i wrangled myself into polishing every stainless part . i did fab up a brass vacuum fitting that operates the heater
switch and polished it also . after thinkin more about the fuel fittings i went for the aluminum bango fittings from vintage speed . i may or may not give them a touch polish but they are loonium
and the finish won't last long . the bango's use less parts "hose" and no "fuel block" . i have em but the less fuel line parts the better .
when i painted the carb bases rustoleum cast grey . i disassembled them , but rethinking that , it may have been a blunder , as reassembling them there is no guarantee that the throttle plates will
reseal as lapped in . so i tracked down some dag213 to use at reassembly to insure a 100% seal at the plates and around the inner shaft bores , "VERY EXPENSIVE"
i bought some small part spares from vintage speed along with their throttle stops and man are they small , probably 80% smaller than those offered by eelco . they'll work just as good but what a
difference in overall size . when ordering from them , their sight only offers credit card payment but if contacted they do take paypal . works great when credit cards are as full as mine .
it'll be a little while before i post anymore photos as the battery charger i use for my old HP camera batteries died so now i gotta track down a reasonable new one . i have probably 95% of what's needed to
finish the job , i just need to get my old ass in gear ! oh , had to buy another garage heater , that died to !------------------------------------------------------------later

psssssss . i always forget something . the old straight bypass fitting was also changed from rusty 1/2 by i think 18 threads to stainless , npt 3/4 threads x 5/8 ID to receive a 3/4 ID bypass hose

Edited by 60 dart 2013-01-24 3:53 PM
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DepsilonD
Posted 2013-01-24 3:36 PM (#356589 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



Elite Veteran

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Chuck,

You are the man! Thanks for taking the time to share all of this information with the rest of us.
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60 dart
Posted 2013-01-25 4:59 PM (#356773 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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took these photos over a week ago , so might as well post em . the bolt head polishing doesn't show up real good but in real time it's dramatic . it will give ya a little of an idea of how easy it is to
do the vacuum fitting . the stainless on the adapters haven't been polished---------------------------------------------------------later

Edited by 60 dart 2013-01-25 5:02 PM




(polished fasteners 003.JPG)



(polished fasteners 002.JPG)



(polished fasteners 001.JPG)



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Attachments polished fasteners 003.JPG (124KB - 171 downloads)
Attachments polished fasteners 002.JPG (133KB - 181 downloads)
Attachments polished fasteners 001.JPG (133KB - 156 downloads)
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DeSotohead
Posted 2013-01-25 7:10 PM (#356786 - in reply to #356773)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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Chuck...

Do you plan on polishing the aluminum intake and adapters as well?
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60 dart
Posted 2013-01-26 12:02 AM (#356812 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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aint no way hank , a degrease , fast mild acid bath and that'll be it , as old as it is it needs to keep some character , even the faded red lettering is stayin----------------------------------------------later

Edited by 60 dart 2013-01-26 12:04 AM
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DeSotohead
Posted 2013-01-26 8:38 AM (#356867 - in reply to #356812)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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Watch the acid, it could take off your red on the lettering if not careful.

Also, if you use the vacuum port where it is, does this mean you have no power brakes on your car?
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60 dart
Posted 2013-01-26 2:25 PM (#356927 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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the acid bath is a water , acid mix lustre brite solution , really mild ....... nope , no power brakes or steering . back in the day power brakes were something i didn't have that often and
the cars and trucks stopped just fine . i think the big injustice of today is comparing what we have now to back then . the first time i drove with power brakes , i didn't like em
and took some getting use to . the only real difference i can see between the two is effort and use . ----------------------------------------later

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60 dart
Posted 2013-01-31 4:38 PM (#357634 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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gotta tell you , if you're goin to use the rustoleum engine"which is a really good paint" be prepared to literally watch paint dry . full curing time is 7 days and it takes 7 days . not
having a dedicated paint area it's really slow . it's really tuff to do 4-5 things at once in a relatively small area . today i removed more of the bowl external vac. tubes and filled them
with JB . took about a whole 5 mins. . the throttle linkage i think i may have to modify a little . i just don't like the radial movement . i think most all gm products that used these carbs were actuated
pulling the throttle from the top , mine will be bottom , pushing . the bottom lever is a tad short and looks to move clock wise a little too much up at the end of the stroke. so what i may do is lengthen the arm @
3/4in. and move the hole counter clockwise , back @ 1/2in. . i'll know more when i do a preassembly again ........... ya , i'm watchin paint dry ------------------------------------------------------------later
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60 dart
Posted 2013-02-03 12:41 AM (#357987 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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i decide to go without a choke , so i'll be tapping the choke shaft holes and using ss set screws to fill em . i'll also be using the pump actuator lever , rod and throttle stops from the
2g . since i'm using those on the primary . sitting and looking at the louvered trip air cleaner i think i solved the possible height problem . i'll just leave the adapter ring off , put the filter
directly on the air horn , then the top . you'd never know the adapter ring was ever missing . now back to watchin paint dry ------------------------------------------------------later
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60 dart
Posted 2013-02-03 5:42 PM (#358085 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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2 of the carbs have "nitrophyl" floats and i really don't want to use em . so i have 2 used ones i'm testing , submerged in rubbing alcohol to test for leaks . they've been under
test for about 3 days now . couple more days i'll take em out , give em a shake to see if they let anything in . if i need to buy new ones , oh well --------------------------------later
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60 dart
Posted 2013-02-05 2:47 PM (#358481 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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did i ever tell ya i like red , anyhow the motor will be the same color , didn't do much the last few days ,,, gotta damm tooth ache , at a tooth that was supposed to
have had a root canal 50 yrs ago --------------------------------------------later

psss those blocks are where the factory idle solenoid hooks . on the middle and rear carb they need removed . through the course of tryin to find more info on the 2gc
specs , i come to find out they aren't at all . the #7042100 are 1971 chevrolet 307 2gv carbs . as far as differences ,,, bout 99% the same !

Edited by 60 dart 2013-02-05 3:15 PM




(removal 001.JPG)



(removal 002.JPG)



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Attachments removal 001.JPG (156KB - 171 downloads)
Attachments removal 002.JPG (159KB - 163 downloads)
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DeSotohead
Posted 2013-02-06 9:51 AM (#358616 - in reply to #358481)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



Board Moderator

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Chuck...

The big difference between the 2GC and 2GV carburetors was the choke area.

The 2GC has the choke on nthe carburetor body, while the 2GV has a remote manifold mounted choke assembly with just a rod to the carb.
The "V" indicates the vacuum pulloff assembly on the carb rather than a choke housing.
The choke housing had the vacuum piston inside the bowl of the choke housing.
The 2GV just has the vacuum pulloff actuator since the remote choke cannot have one.

Otherwise, they are the same basic design.
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60 dart
Posted 2013-02-11 3:05 PM (#359477 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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thanks hank . as i stated above , the peening plate screws that come with the long throttle shafts are too short ,"if only by 1/32" . so what i did was make up a screw
holder from scrap 1/4 plate , tapped at 6-32 threads . screwed one in snug and drilled the end of each screw @ 1/32 deep . the screws i used were the wrong flathead brass
ones fastenal sent awhile back . the heads were a little wide so i put em in the drill press and run a file against em to bring into @ size , they worked real well and just about
the ideal length . to do the crimp or cleve , i used a small set of needle nose v grips , with one side ground to a V . i wish i could get a much closer shot but it's all i
can give but i think you can get the idea ----------------------------------------------------------later



(crimped screws 002.JPG)



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Attachments crimped screws 002.JPG (132KB - 205 downloads)
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60 dart
Posted 2013-02-13 12:42 AM (#359765 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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i modified one of the throttle arms as i stated would above . red is factory -----------------------------------------------------------later



(throttle arm mod 007.JPG)



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Attachments throttle arm mod 007.JPG (135KB - 204 downloads)
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60 dart
Posted 2013-02-16 6:14 PM (#360320 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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the first 3 are teasers . i found out today that the stanchion for the throttle stop is too long to use the 2g throttle arm ,,, so it'll need trimmed on all 3
bowls or use the 2gv arm , which looks too cluttered .
the 4th. photo is with the dag213 applied and set per directions , "baked on at 350* for @ 30 mins.------------------------------------later



(painted 2g 003.JPG)



(painted 2g 004.JPG)



(painted 2g 009.JPG)



(painted 2g 010.JPG)



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60 dart
Posted 2013-02-28 4:37 PM (#362421 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



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i solved the height problem . i used 3/16 rubber fuel line to make doughnut seals and of course super glue ! they'll last as long as the unit --------------------------------------later



(carb seal 017.JPG)



(carb seal 008.JPG)



(carb seal 012.JPG)



(carb seal 006.JPG)



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Attachments carb seal 006.JPG (146KB - 215 downloads)
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60 dart
Posted 2013-03-04 1:07 AM (#362924 - in reply to #351747)
Subject: Re: how does one shut down idle circuits on outboard trip carbs ?



Expert 5K+

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the last couple of days i played around fabbin up a polished SS throttle return bracket . it could stan a little more polishin at the inside bend but i think
it came out ok . my buffer is putting out a ton of static that gives a helluva jolt , almost painful when touchin anything metal after or while buffin ---------------------------later



(throttle spring return bracket 002.JPG)



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Attachments throttle spring return bracket 002.JPG (128KB - 211 downloads)
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