VCCA Home Forums TECHNICAL - GENERAL Mechanical - Engine, Trans, etc Heat riser

Good evening,

Posted this in the 29-32 forum and did a search but no luck. Any help would be appreciated. My 32 Chevy heat riser flap that is operated by a cable is rusted and frozen solid. Someone has brazed (flux and bronze rod looks like) an arm to the shaft in the past. Does anyone have some experience working on these old heat risers and, if I need one, will I have to make one or are there replacements somewhere? Or, should I not go to the trouble and just leave it open and not worry about the thing working like it should. Thanks,

Mac

I have wired my '32 manifold heat valves in the open position for the last 40+ years. Yes they are a bit cold blooded and require a bit of choke to get started. Once started and run for less than a minute they seem to run okay. Occasionally I have freed the manifold valve but never found it necessary to pull out the heat knob or if I did didn't find that much difference. I have a free one on my test engine and have a weight on the lever to keep it open (as the cable is not attached).

Thanks Chipper....Mine is open and you are right about being cold natured. After it warms up, it runs like a sewing machine. I just thought I would free it up or replace it and place a weighted lever on it like the later models had. I can leave it like it is as it is really no trouble. Peace and best,

Mac

Ordered a repair kit today....Looks nice and should not be difficult.

Mac

Mine was frozen solid. I took it to Simons Machine shop here in Charleston and he drilled the old out and put stainless sleeves in with a new rod. works like a champ.

Sounds about like what will be needed with the kit....I have access to a great retired NASA machinist here in Clemson. He has his own shop in his basement. You should see his stuff...Must have cost a fortune.

Mac