Hi,

I was wondering what do people use to seal the flanges on the turbo.

Any sort of flamable sealant is out of the question as I am running a wideband and $100 a sensor (Bosch LSU 4.2) so NOT fouling it is my top priority.

However, my research returned that sometimes no gasket is used as the school of thought is that a slight leak is better than blowing a gasket, sometimes grease is used that burns into a carbon gasket (not O2 safe I presume) another thing to use is RTV's and other sealants (some are sensor safe but who kows how safe) also I dont know a liquid sealant that works when the turbo glows either.

This leaves copper gaskets, annealed copper is good but even on flat flanges I dont think it will compress good enough due to the large surface area. So I was thinking of annealing copper wire and bending it to make like a copper o-ring that will compress good.


Untill I find a good solution I can just get by with no gasket I guess as all the flanges are linished flat.