Silicone for gasket? Can I?

[Cale22]

Hello all,

I found a leak from my upper plenum to the intake. I also have a plenum spacer, so it could be located somewhere around there. I was wondering if I could use high temp. RTV silicone instead of the gasket (b/c its so thin). Im hoping this would fix the leak, or should I add the silicone on top of the gasket? Thanks in advance.

 

[The Radius Kid]

Got some doghouse warpage?

 

[Cale22]

I think the Mease sheetmetal upper plenum was not machined flat, so it is not seating flush on the spacer.

 

[The Radius Kid]

Clean it and use a flat mirror to check it.

 

[Cale22]

Yes it is not a flat surface. Can I use silicone on the gasket to try and compensate rather than taking it to a machine shop and paying $$$?

 

[Jeff Rand]

There is a product call "Right Stuff" and it seems to seal better then the hi temp. silicone. I think this will also hold up well under pressure.
Jeff

 

[strikeeagle]

Is it new? If you're sure it isn't flat, return it. Unless, of course, you expected to have to machine a new part to get it to seal...

 

[The Radius Kid]

Originally posted by strikeeagle
Is it new? If your sure it isn't flat, return it. Unless, of course, you expected to have to machine a new part to get it to seal...

Yup.