carb base gaskets
Thread Starter
Racer
Joined: Dec 2011
Posts: 284
Likes: 4
From: Philadelphia Pennsylvania
carb base gaskets
I'm replacing my carburetor, first time doing something like this. When I lifted the old carb off I found three gaskets, and some silicone gasket goop under one side of the bottom gasket. Is this normal? Should I scrape the crud off (keeping it out of the intake) and replace the three gaskets? The metal one in the middle looks fine so maybe just replace the other two? Are three usually sandwiched like this?
Race Director
Joined: Apr 2011
Posts: 11,183
Likes: 3,335
From: North of Toronto - Ontario
I am in the middle of going through something along these lines. Double checked with Lars and the short answer is yes.
Mainfold to metal shim (sounds like factory setup) and then rather than leaving the hot metal shim right against the carb, another gasket gets added between them.
Mooser
Mainfold to metal shim (sounds like factory setup) and then rather than leaving the hot metal shim right against the carb, another gasket gets added between them.
Mooser
Advanced
Joined: Jul 2012
Posts: 56
Likes: 0
From: San Antonio, Tx
Any suggestions on where I would find the replacement gasket set? The folks at the counter for O'reilly and Advance didn't have a clue and nothing came up in their systems. Also, NAPA/Riebes didn't have a kit, he indicated that he had the 'open' gasket, and another store in Stockton has the 'closed gasket' but that no one has the shim....
Race Director
Joined: Apr 2011
Posts: 11,183
Likes: 3,335
From: North of Toronto - Ontario
Here's some of the info I gathered, also some chevelle site and a few others, then asked Lars and the three listed we what he recommended.
That being said, I was working for a 72 Q-Jet, s/b the same on yours though
http://forums.corvetteforum.com/c3-t...lts-stuck.html
from down near the bottom of the post
"Your bottom gasket is a Fel Pro 60043.
Your middle steel heat shield is a Fel Pro 60731.
The top gasket is a Mr. Gasket 4256G.
...
This is the 4 hole fiber gasket w/o the groove(smiley face)
This gasket must be a composite gasket as paper will burn through
and cause fuel /air leaks..."
Mooser
That being said, I was working for a 72 Q-Jet, s/b the same on yours though
http://forums.corvetteforum.com/c3-t...lts-stuck.html
from down near the bottom of the post
"Your bottom gasket is a Fel Pro 60043.
Your middle steel heat shield is a Fel Pro 60731.
The top gasket is a Mr. Gasket 4256G.
...
This is the 4 hole fiber gasket w/o the groove(smiley face)
This gasket must be a composite gasket as paper will burn through
and cause fuel /air leaks..."
Mooser
Race Director
Joined: Apr 2011
Posts: 11,183
Likes: 3,335
From: North of Toronto - Ontario
Tech Contributor
Joined: Aug 1999
Posts: 14,379
Likes: 6,390
From: At my Bar drinking and wrenching in Lafayette Colorado
You have the "Smiley Face" exhaust crossover intake, and you need a special carb base gasket set. You can e-mail me for a paper on this with photos and part numbers.
Lars
V8FastCars@msn.com
Lars
V8FastCars@msn.com
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