Amen! On Thu, 22 Oct 2009 18:43:53 -0400, Mike <mbucchino@CHARTER.NET> wrote: > NO silicone sealant is rated for DIRECT and CONTINUOUS exposure to the extremely high temps and pressures of an exhaust system, even Ultra Copper RTV. It's rated for 700 degrees F max, and EGT's (exhaust gas temps) can sometimes reach 1500 degrees F, so the reality is that it just won't hold up for the long run. I don't care what it says on the package. Don't forget, they want to sell you something that's a cheaper magic cure to your problems. > If your exhaust flanges are that damaged, you need new pipes, along with your new gaskets. However, slightly-scratched up or distorted flanges can be hammered and filed back to perfectly flat for better sealing. > >Mike B. |
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