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-   -   Best gasket material for intake manifold? (http://www.hotrodders.com/forum/best-gasket-material-intake-manifold-182482.html)

Nite Life 08-10-2010 11:00 AM

Best gasket material for intake manifold?
 
I am running an old Larry Wenzler tunnel ram on my Poncho with dual quads.

The gasket material that separates the lower portion from the top plate is going bad and leaking vacuum.

Can you folks make a recommendation to me on what to use to replace it?

http://i23.photobucket.com/albums/b393/jdrakes/f9.jpg

bigdog7373 08-10-2010 11:06 AM

a new gasket

ericnova72 08-10-2010 11:12 AM

I would suggest a medium density fiber type, .030-.040" thick. Cork based I think will be too soft.

I would suggest a lot better air filters than those tiny things if you are wanting to make power.

bigdog7373 08-10-2010 11:28 AM

If you are having a hard time finding the gasket you may have to buy a roll of gasket material and make your own. :thumbup:

Nite Life 08-10-2010 01:21 PM

I do have to make my own gaskets as noone makes this one. I will go to the parts store looking. I don't know much about air filters but bigger ones won't fit in the scoop.

CanuckBird 08-10-2010 01:36 PM

Permatex Ultra Grey.It's the same material GM uses for non-gasket sealing.I have never had a leak with it.Go with 1/4 inch thick bead.

Nite Life 08-11-2010 02:36 PM

Thank you very much.

ericnova72 08-11-2010 02:58 PM

Any silicone in this case is a bad idea, gasoline will turn it to jelly over time, doesn't matter what color or brand.

Do it right, hand cut a new gasket.

K&N filters for the scoop.

bigdog7373 08-11-2010 03:17 PM

Quote:

Originally Posted by ericnova72
Any silicone in this case is a bad idea, gasoline will turn it to jelly over time, doesn't matter what color or brand.

Do it right, hand cut a new gasket.

K&N filters for the scoop.

I agree, don't try to shortcut the job, do it right the first time and get a new gasket.

cobalt327 08-11-2010 03:33 PM

All the major parts stores carry FelPro bulk gasket material in any number of thicknesses. Look for Karropak, it will do the job for you. There's also a high temp material called Pro-Ramic.

Doesn't need to be too thick, anything in the 1/16" or less (obviously not "notebook paper" thin) will do, I'd probably choose 1/32" if it was available and the flanges were relatively flat and smooth.

Cape Cod Bob 08-11-2010 06:32 PM

NICE motor. Wish it was mine. I could not afford to drive to much though. :welcome:


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