General Category > Quadrajet Carb Talk and Tips
Air Horn Gasket question
DV657172:
Thanks for all the replies and education.
I dont have any fuel coming from accelerator pump hole but as Brian and quadrajam reported mine also has the most wicking of fuel nearest the accelerator pump.
Brian B.:
I probably notice it more near the accelerator pump because that is where "excess" gasket material sticks out under the airhorn. Its akin to a small square tab of gasket hanging out.
Cliff Ruggles:
If you bought my kit the main body to airhorn gasket for that carb is .015" thicker and made of a superior material that doesn't "wick". If you are seeing fuel between the long hold down bolts and center front airhorn screw the airhorn is going to be warped slightly more than the main casting and not clamping the gasket sufficiently.
My cure for that here is to simply run the front of the airhorn gently across my bench mounted belt sander for a couple of seconds to make it just a tad flatter than the main casting. This will cure that issue 99.999 times out of 100 vs going to extensive efforts to "unwarp" the main casting and airhorn for a better fit.
I see folks advise the "unwarping" move a lot, but it is simply not necessary for most of these builds.......FWIW
DV657172:
Thanks Cliff for the reply.
Yes the rebuild was your kit (SR Rebuild Kit). The wicking however is around the entire gasket, just to a larger degree near the accelerator pump although as mentioned previously that may just be due to being more noticeable given more gasket exposure outide of the airhorn.
Cliff Ruggles:
Did you do a test fit between the main casting and airhorn? It's common for the long outer bolts to have pulled down the top a little more than the center section (warped). This is an easy fix by simply running the front of the airhorn across a big belt sander to knock the ends down a bit so it seals better. You can also do it by hand with a file, or any other means that just knocks the ends down enough that it sits tight on the main casting and clamps the gasket better....
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