Fwd: [Chrysler300] 300G Heat Riser parts
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Fwd: [Chrysler300] 300G Heat Riser parts

Sent from my iPhone

Begin forwarded message:

If free to move as they are supposed to be , maybe not pressed hard enough at either end to be held tight .Cannot be that hard a force if you think about it . Add in the rough idle. 
While on this , be aware that they rust shut in the position of full carb heat while sitting  . I have seen several times where the floor of the carb plenum ( aluminum) is melted by the jet of exhaust when it has been driven with a stuck heat riser . All the exhaust from one bank passes under the carb. This can melt the ram manifold. 
Tends to impact vacuum a bit.. 

I agree with setting choke very sensitive and remove heat riser valve plate . Maybe add thin restrictor plate at elbow with 1/4 hole . I think George wrote this up in archives? Take the J idea to Fand G . J setup was the attempt to fix Fand G problems. Much better to have low heat than  way too much. But to each his own .
John g 

Sent from my iPhone

On Apr 18, 2017, at 7:17 AM, Charlie V <cv300g@xxxxxxxxx> wrote:

Perhaps it might be normal. I thought the stop / bumper was there to prevent the rattling. On my other Mopars they rattled if the stop was not there. Perhaps it rusted and fell off. My heat riser in my 300 sport is functioning properly and it's quiet. There is also a second spring on the heat risers.
Not sure why they would Rattle on a new car.

On Mon, Apr 17, 2017 at 8:23 PM, Charlie V cv300g@xxxxxxxxx [Chrysler300]

I believe that the rattling of the heat riser is because the stop is worn away.

STOP P.N. 683057 Small flat steel piece with a hole and a piece of, what looks like asbestos wrapped around the other end. Acts like a bumper for when the Heat Riser returns to rest against the stop shaft.

Charlie Valentine
On Mon, 4/17/17, John Grady <jkg@xxxxxxxxxxxxxxxxx> wrote:

Subject: Re: [Chrysler300] 300G Heat Riser parts
To: dverity@xxxxxxxxxxx
Cc: "Bob Jasinski" <rpjasin@xxxxxxxxxxx>, "Michael Van der veen" <michaelvanderveen8@xxxxxxxxx>, cv300g@xxxxxxxxx, Chrysler300@xxxxxxxxxxxxxxx
Date: Monday, April 17, 2017, 6:06 PM

Yes but
choke pull off action is 100 % dependent on heat riser
working right , on both sides ,A characteristic of ram
cars to me is the sound of both heat valves rattling at idle
when brand new ., I remember 383 plymouth ram in station
wagon , 3 speed stick  , really fast  car , ( despite ugly
beyond belief) ; sound of that part of it , you could tell
ram without opening hood, Also mass state trooper 62 wagons
, same thing . How I know that best left to history 

Sent from my iPhone
On Apr 17,
2017, at 5:47 PM, <dverity@xxxxxxxxxxx>

He is not talking about choke parts. The heat riser
parts are what is in
question. In my opinion, it does not matter if they don’t
unwind at exactly the
same time. It would be impossible anyway, as the manifolds
are not the exact
same temperature. On the choke issue, if the choke pull-off
is doing it’s job,
the engine will run smooth while the chokes are moving to
fully open.


From: mailto:Chrysler300-noreply@xxxxxxxxxxxxxxx

Sent: Monday, April 17, 2017 1:29 PM
To: Bob
Cc: Michael
Van der veen ; cv300g@xxxxxxxxx
; Chrysler300@xxxxxxxxxxxxxxx

Subject: Re: [Chrysler300] 300G Heat Riser

Thought about electric , parts from edelbrock afb.
Last F went manual choke
no / minimal heat riser, like J anK . And max wedge .
The problem with
factory 60,61 is they can pull off
at different times, leaving you half choked . And resulting
idle/ stall issues .
Water heated plenum is another way too . I think too much
heat keeps coming even
with thermostatic valve and working
in 60,61 
George used to put
restricting  washers in
elbows I think he was right  . No valve . Perhaps the point
being maybe we
can improve rather than replicate a problematic design ?
Worth talking about
anyway ??

Sent from my

On Apr 17, 2017, at 11:45 AM, 'Bob
Jasinski' rpjasin@xxxxxxxxxxx
[Chrysler300] <Chrysler300-noreply@xxxxxxxxxxxxxxx>


#yiv1457481058 v\00003a* {}
#yiv1457481058 o\00003a* {}
#yiv1457481058 w\00003a* {}
#yiv1457481058 .yiv1457481058shape {}

I would
love to see the
heat riser parts reproduced, I've been doing without
for years on my
G.  I'm fine when the weather is warm
and I'm using the car,
but the colder it gets, or when starting after long
periods, it takes too long
for the chokes to pull off.


From: Chrysler300@xxxxxxxxxxxxxxx

On Behalf Of
Michael Van der veen michaelvanderveen8@xxxxxxxxx

Sent: Monday, April
17, 2017 6:27 AM
To: cv300g@xxxxxxxxx
Cc: Chrysler300@xxxxxxxxxxxxxxx
Re: [Chrysler300] 300G Heat Riser


Hi everyone this
is something I'm also chasing, would
there be enough needed to consider reproduction of such by
the club? They are
nearing the end of their life on some cars and nos has
basically run out,
where are the votes? I vote yay,

Lol Mike in

On 17 Apr 2017
10:32 AM, "cv300g@xxxxxxxxx
[Chrysler300]" <Chrysler300-noreply@xxxxxxxxxxxxxxx>



Does anyone have any spare
of the following
Heat Riser parts they are willing to part with ?

Counter Weight
Shield ( The
Heat Riser ) P.N. 1944616 , Left Side
( The Main
Spring)  P.N. 2128933
683057  Small flat steel piece with a hole and a piece
of, what looks
like asbestos wrapped around the other end. Acts like a
bumper for when the
Heat Riser returns to rest against the stop shaft.
1736012  Bolt to secure the Heat Riser to the
Now, if someone happens to
have a Repair Kit
for the left side  and they are willing to part with it
that would be
even better. It would include all the parts mentioned
above along with a few
The P.N. for the LEFT side
Heat Riser is
Of course NOS would be
preferred but good used
will do too.

Charlie Valentine
62 300 Sport
1965 Plymouth Barracuda


Posted by: John Grady <jkg@xxxxxxxxxxxxxxxxx>

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