Heat Riser Gasket on a '79
Thread Starter
Pro
Joined: Dec 2002
Posts: 560
Likes: 1
From: Mooresville NC
Heat Riser Gasket on a '79
Is there suppose to be one there or not? When I got the car all the emission stuff was gone. So I ordered a heat riser valve and it came with a gasket. Now it's leaking after 5 years and I'm trying to find a replacement gasket locally. But after searching and going to different stores nobody has a part number for it. The gasket would go in between the exhaust manifold and the heat riser and would be a flat gasket not the donut.
So is there or is there not a gasket? Thanks for the help.
So is there or is there not a gasket? Thanks for the help.
Thread Starter
Pro
Joined: Dec 2002
Posts: 560
Likes: 1
From: Mooresville NC
I may have to resort to removing it and bringing it to a muffler place or bring it to a local part store and have them physically match it up. I can't imagine GM would use different gaskets for all their Blazers and Trucks run the same heat riser setup.
Le Mans Master
Joined: Apr 1999
Posts: 6,134
Likes: 46
From: Raleigh North Carolina
Assuming you have 3 studs/holes...
Measure the distance from center to center of 2 of the bolt holes.
If it's 2-11/16... the gasket should be for 2" exhaust... FelPro #60083.
If center to center is 3-1/16, its for 2.5" exhaust and the FelPro number is 60117.
These are not listed for 79... so if the distance is different , then never mind.
Bring the exhaust/heat riser with you to match it up at the store.
Measure the distance from center to center of 2 of the bolt holes.
If it's 2-11/16... the gasket should be for 2" exhaust... FelPro #60083.
If center to center is 3-1/16, its for 2.5" exhaust and the FelPro number is 60117.
These are not listed for 79... so if the distance is different , then never mind.
Bring the exhaust/heat riser with you to match it up at the store.
Racer
Joined: Dec 2004
Posts: 379
Likes: 0
From: Fairfield Texas
Went out to the shop and looked at My 79,and it does not appear to
have a gasket between the heat riser and manifold.This is a 15000
mile car and I wonder if they came originally without a gasket.
have a gasket between the heat riser and manifold.This is a 15000
mile car and I wonder if they came originally without a gasket.
Melting Slicks
Joined: Oct 2004
Posts: 2,662
Likes: 8
From: Knoxville Tennessee
Get rid of the heat riser. If you were to install headers you wouldn't have one anyway. I don't have one on my '79 and it still doesn't take it that long to warm up without it. If it were to freeze closed it would cause problems anyway. Just a thought.
Bernie
Bernie
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