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Parade Green 57 New Yorker Coupe
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Powerflite
Posted 2020-04-24 9:28 PM (#597310 - in reply to #572778)
Subject: Re: Parade Green 57 New Yorker Coupe



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Location: So. California
Apparently, the label on my new cam is false. The valve lift on it measures out as a stock New Yorker cam, not a 300D. Here are the numbers for comparison in the table below. I think the cam that I pulled out of the motor shows .01" smaller lift just because it is a little worn. I didn't really want to have to purchase a new cam for this motor, but I didn't want to run a stock New Yorker cam either. So I'll probably purchase the 270 cam from Hot Heads, the same specs as what I put into the 331 in my Savoy. I'm thinking that the stock converter should be OK with it since this motor will have 10:1 compression. The other option is to install a roller cam, but I don't feel very rich right now.



(392 Hemi Cam Specs.jpg)



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Attachments 392 Hemi Cam Specs.jpg (62KB - 13 downloads)
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Powerflite
Posted 2020-04-26 3:49 AM (#597342 - in reply to #572778)
Subject: RE: Parade Green 57 New Yorker Coupe



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Posts: 6480
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Location: So. California
I cleaned up the block ready for new paint and ran a fine grit ball flex hone through the bores just enough to fully scuff the shine to allow the new rings to seat. Swapped the '58 pistons onto the rods with new rings after replacing the piston pins. The old ones looked marginal. I also measured the difference in deck height between the two pistons. I am hoping to get the crank back into it soon, but I'll have to wait for parts to arrive before I can get very far.



(57NY Hemi Cylinder Hone.jpg)



(392 Hemi Piston Comparison.jpg)



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Attachments 57NY Hemi Cylinder Hone.jpg (133KB - 13 downloads)
Attachments 392 Hemi Piston Comparison.jpg (206KB - 13 downloads)
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Powerflite
Posted 2020-05-13 1:40 AM (#598171 - in reply to #572778)
Subject: Re: Parade Green 57 New Yorker Coupe



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Posts: 6480
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Location: So. California
A correction to the picture above: After measuring more carefully, the difference is closer to .070" in height. I expected the cam bearings to be in good shape so I wasn't planning to replace them. But I found that the last 2 toward the rear were in unacceptable condition to just reuse. I decided to replace the bearings myself for the first time, so I ordered them from Hot Heads and an installation tool from the Car Shop. The tool comes with an extra die which is needed to work with big block Mopar cam bearings. I received the parts today so I can get moving on the rebuild again. Hopefully I don't screw it up. But I find I prefer to do things myself than to rely on some minimum wage guy in a shop; and the money I save the first time usually pays for the tool.



(Hemi Cam Bearings.jpg)



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Attachments Hemi Cam Bearings.jpg (251KB - 4 downloads)
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samstrader
Posted 2020-05-13 5:08 AM (#598179 - in reply to #572778)
Subject: Re: Parade Green 57 New Yorker Coupe


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I think you are smart to do the job yourself. You will make sure things are right. Just make sure to line the holes up right when you install the cam bearings; don't do it like my mechanic did.

I wish my block would have looked as good as yours after my mechanic cleaned it. Yours Looks great.

I'm sure you will get the cam bearings installed perfectly. And then you won't have to worry about it. I watched YouTube videos and you have a much higher end tool than they were using.
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Powerflite
Posted 2020-05-17 12:00 PM (#598393 - in reply to #572778)
Subject: Re: Parade Green 57 New Yorker Coupe



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Posts: 6480
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Location: So. California
Thanks Sam. I love using good quality tools. This thing worked really well for the 4 front bearings that it fit. I'll have to machine up a die for the rear bearing if I get tired of carrying my junk camshaft around. With the motor upside down, I stuck a long skinny screw driver up the water ports and knocked out as much rust as I could. Then blew it out of there. Got quite a bit of it out, so that makes me feel better. I replaced all the cam bearings and installed the new Isky cam, and it went in perfectly. I went to put in the crank, but realized that all the rear seals I have are for the 354 or 331. Too small for the 392. So I ordered a couple of them and have to wait for them to arrive now. I really need to do a better assesment of what I have so I dont have to wait around so much for more parts. Oh well, in the meantime, I can work on making a baffle for the oil pan.
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samstrader
Posted 2020-05-18 12:20 PM (#598433 - in reply to #572778)
Subject: Re: Parade Green 57 New Yorker Coupe


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Your engine being so clean will really make a difference on how well it runs and cools. It's going to be great.

I know what you mean about the seals. They say "plan the work and work the plan" but for me, a good project is when I only have to go to Home Depot 8 times or less. Sometimes the pause it takes to get another part gives you time to think things out better and helps you get a better job done.

It is going to run great and you and going to know exactly what is in it. That's going to be fun.
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Powerflite
Posted 2020-05-19 3:22 PM (#598483 - in reply to #572778)
Subject: Re: Parade Green 57 New Yorker Coupe



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Location: So. California
Thanks Sam, yeah it would be even better if I could hot tank the block to remove everything out of the jackets, but at least I feel like I got the majority of it. I will also flush it out once I get the heads on it.
The rear seal on the 392 is pretty screwy. The seal used here isn't even made for this motor but adapted from some other application. Not sure what, maybe a 360? Anyway, it requires that this shim is placed underneath it to reduce the diameter and make it seat well. I don't trust this not to leak from underneath the seal so I clean out the groove really well with acetone, using cotton swabs, and apply high temp RTV between everything before it gets all buttoned up with the crank & main cap installed.



(392 Hemi Rear Seal.jpg)



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Attachments 392 Hemi Rear Seal.jpg (153KB - 2 downloads)
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22mafeja
Posted 2020-05-19 4:37 PM (#598494 - in reply to #598483)
Subject: Re: Parade Green 57 New Yorker Coupe


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The shim was something new to me..I would absolutely put rtv silicone on both sides of it...
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mikes2nd
Posted 2020-05-20 1:14 AM (#598530 - in reply to #572778)
Subject: Re: Parade Green 57 New Yorker Coupe


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i remember installing that rear main... yeah i needed to put sealant on the ends... was weird but i followed directions.
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Powerflite
Posted 2020-05-24 12:55 PM (#598726 - in reply to #572778)
Subject: Re: Parade Green 57 New Yorker Coupe



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Posts: 6480
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Location: So. California
I got the short block together yesterday. Coming along nicely. It seems like it wouldn't take much time to put these together based on how easy it is to take them apart, but it always take much longer than I expect. The original timing chain from this motor is the only original one I have seen that was still really tight, so I could have reused it, but I decided to replace it instead. I also included a picture of the piston compression height for reference. I have a set of heads that were used for racing. They have aftermarket springs installed into them so I am thinking I will take them to the machine shop to measure how much spring pressure they apply to see if I can use them as-is, since they have almost no miles on them. Eventually I will put aluminum heads on this motor, but I don't have enough money to do that now so a set of iron heads will do until then.



(57NY 392 Hemi Short Block.jpg)



(1958 Hemi Piston Compression Height.jpg)



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Attachments 57NY 392 Hemi Short Block.jpg (202KB - 0 downloads)
Attachments 1958 Hemi Piston Compression Height.jpg (202KB - 0 downloads)
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1960fury
Posted 2020-05-24 2:02 PM (#598733 - in reply to #598726)
Subject: Re: Parade Green 57 New Yorker Coupe



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Location: northern germany
Looks great! Is that a SA-Gear timing sprocket, that has a slot instead of a bore for the camshaft pin?
If so, have you deburred the slot? It looks like one.

Just bought a timing set from that company and was shocked that the chain was NOT made in the US and that the sprocket, that they proudly advertise as "Made in the USA", slot wasn't deburred. If I had it installed that way it would have caused severe axial run out and premature wear.

Ok, looks like the 392 cams do not have a pin like the big blocks, so nothing to worry about.

Edited by 1960fury 2020-05-24 4:27 PM
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Powerflite
Posted 2020-05-24 5:27 PM (#598738 - in reply to #572778)
Subject: Re: Parade Green 57 New Yorker Coupe



Expert 5K+

Posts: 6480
50001000100100100100252525
Location: So. California
Thanks, the timing chain set is a Summit Racing brand, but it could have been made by SA. You're right that the hemi uses square keys in the cam & crank so it requires square slots. I didn't notice any burs on it, but I will look over it again, just in case.
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Powerflite
Posted 2020-05-25 7:52 PM (#598794 - in reply to #572778)
Subject: Re: Parade Green 57 New Yorker Coupe



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Posts: 6480
50001000100100100100252525
Location: So. California
I made a baffle for the oil pan. I didn't make it extend as far forward as the last time I made one, as I think it was a little overkill. But I kept the holes in the corners of it to allow the oil to flow from the back end.



(392 Hemi Oil Pan Baffle.jpg)



Attachments
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Attachments 392 Hemi Oil Pan Baffle.jpg (219KB - 0 downloads)
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