DIY solicone gaskets- has anyone tried them?

[chuck c]

It seems to me the new high temp silicone would make great and reusable gaskets and they do sell it in sheet for that purpose. I think I want to try it for my single carb conversion at the ports and carb flange. Has anyone made their own gaskets with it and how did it work?

 

[zman]

Not sure if the high temp is fuel proof. That's the problem with silicone in any fuel system, even the vapors will eat it.

 

[chuck c]

zman » Sat Apr 09, 2016 5:11 pm[/url]":2ijqduqd]
Not sure if the high temp is fuel proof. That's the problem with silicone in any fuel system, even the vapors will eat it.

I found one place selling a grade that is fuel resistant so it exists but is seems you have to be careful to make sure that's what you get.

 

[zman]

OK, just a lesson I learned, I bought fuel resistant silicone to reuse a metal intake manifold but when I removed it months later the silicone was like a goo..Never used it in a fuel system since...Maybe things have changed in the 20 years since.

 

[joedrum]

Leather seems to make good gaskets for me.....also like plywood with elmers glue sealer....for ply voids and leathet gaskets. Mating surfaces....

 

[slabghost]

I'm using the cork gasket material.

 

[chuck c]

I'm thinking of the intake ports on the heads so I think that's too hot for leather or cork. What do guys use when they make an all-metal manifold with metal flanges at the heads?

 

[joedrum]

Mine is pluwood and elmers glue sealer and cereal box paper glued to mating surface to heads and runner flanges been like that for yrs now been off and on many times...me personally i dont want heat in my manifold at all....cild carge has more power

 

[OldWrench]

We tried them in my shop, didn't work out very well and so I put a stop to any of our guys using any form of it. I prefer stock gaskets when available, or at least good quality gasket material.