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Mod | | | Forums66 Topics128,087 Posts1,055,980 Members48,430 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Sep 2012 Posts: 112 Wrench Fetcher | | Wrench Fetcher Joined: Sep 2012 Posts: 112 | I decided to put a new gasket on the exhaust and intake manifold to the block.I then decided to install a new gasket on the exhaust flange out to muffler.I turned manifold upside down on the work bench and noticed there is no heat riser only stove bolts in the holes where the shaft should be. I do not know how long it has been like that but i am sure DAD must have done it 50 years ago. Should i just leave it be or install a new one? Engine runs well on trips on the back roads (joy rides). Any feedback .Thanks | | | | | Joined: Aug 2005 Posts: 6,377 Ex Hall Monitor | | Ex Hall Monitor Joined: Aug 2005 Posts: 6,377 | If it ain't broke don't fix it. If it's been running fine without it leave it alone. I've had mine jammed in the heat off position for years. A bit of choke on cold start, no problem.
Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.
| | | | | Joined: Jan 2010 Posts: 38 New Guy | | New Guy Joined: Jan 2010 Posts: 38 | Mine is missing too. Runs fine.
If it's broke hit it harder!
| | | | | Joined: Apr 2005 Posts: 1,107 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 1,107 | i tore all mine out and plugged them when i had the manifolds off the trucks. i have no issues adjust choke accordingly until enine is up to temp. or you could rip it apart, remove the sleeves if they ain't already and get a new one and install it. | | | | | Joined: Sep 2012 Posts: 112 Wrench Fetcher | | Wrench Fetcher Joined: Sep 2012 Posts: 112 | LET IT BE ,LET IT BE sounds good like the song. | | | | | Joined: Jul 2008 Posts: 181 'Bolter | | 'Bolter Joined: Jul 2008 Posts: 181 | better gone than stuck in the closed position as mine was. ran ok but valves rattled under acceleration. moved mine to now stuck open position and runs great just may have to run with a little choke for a longer duration. | | | | | Joined: Nov 2002 Posts: 394 'Bolter | | 'Bolter Joined: Nov 2002 Posts: 394 | Now lets see if I have this right,with the heat riser weight in the horazontal position that would be in the closed position? | | | | | Joined: Aug 2005 Posts: 6,377 Ex Hall Monitor | | Ex Hall Monitor Joined: Aug 2005 Posts: 6,377 | This is the 'heat off' position. The terms open and closed are a bit confusing to me because both positions allow the exhaust to flow. Nothing's ever actually "closed". Heat on and heat off make more sense.
Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.
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