Date:         Thu, 22 Oct 2009 21:42:19 -0400
Reply-To:     Benny boy <huotb@VIDEOTRON.CA>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Benny boy <huotb@VIDEOTRON.CA>
Subject:      Re: 1.9 Head replacement (was lifter collapse / smog issue)
Comments: To: Mike Bucchino <mbucchino@CHARTER.NET>

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.