Heat Riser Question
Thread Starter
Racer
Joined: Dec 2010
Posts: 281
Likes: 4
From: Holbrook MA
Heat Riser Question
Finally finishing the insall of a new CC dual exhaust on my 7 L48 auto. The AIM seems to show the heat riser mounting with it's flat side up with no gasket between the heat riser valve and the exhaust manifold. The exhaust then bolts up to the tapered seat side of the heat riser. Is this correct, no seal between the heat riser and the manifold?
Burning Brakes
Joined: Dec 2005
Posts: 992
Likes: 56
From: Baldwinsville, NY
Corvette Central has this picture of the heat riser with the gasket.
If you have a heat riser and not a spacer/eliminator then:
Exhaust Header, Three Hole Gasket, Heat Riser and Exaust Pipe.
http://www.parts123.com/parts123/yb....5Z5Z50000050G#
If you have a heat riser and not a spacer/eliminator then:
Exhaust Header, Three Hole Gasket, Heat Riser and Exaust Pipe.
http://www.parts123.com/parts123/yb....5Z5Z50000050G#
Safety Car
Joined: Jun 2004
Posts: 4,363
Likes: 221
From: Beecher Illinois
I've had the front crossover pipes off both of my 79s and my 78SA over the last few years to replace oil pan gaskets. No gaskets on the heatrisers.
BUT, gaskets are offered for a few things that didn't originally have gaskets.....
exhaust manifolds
cat convertors
heatrisers
Nothing wrong with using them. I could use them on my cat convertors
edit....check out the diagram in the CC link above.
up to 74 used a gasket, 75-79 didn't.
BUT, gaskets are offered for a few things that didn't originally have gaskets.....
exhaust manifolds
cat convertors
heatrisers
Nothing wrong with using them. I could use them on my cat convertors
edit....check out the diagram in the CC link above.
up to 74 used a gasket, 75-79 didn't.
Last edited by KapsSA; Apr 10, 2011 at 09:23 PM.
