[T3] over-the-top mufflers

Brent Bottolfson brent at bottolfson.net
Thu Mar 21 04:19:45 PDT 2013


One thing to point out with the OTT headers/muffler is there are a 
couple versions out there.  There is the Kymco (spelling?) version and 
the Tri-Mil.  The Tri-Mil is the more common and the one ISP sells, but 
you can also find it elsewhere.  The Kymco version has a larger bend 
right after the flange from the header and a bit larger muffler.  I 
wonder if these are responsible for the 'bellows burning' issues... 
There are many, many Type 3's out there with the Tri-Mil version without 
issues.

The Tri-Mil is steel and fitting them up to heat exchangerstakes a bit 
of wrestling when they're first bolted up. But really nottoo bad.

I sandblasted mine and used a ceramic coating by Techline. DIY with 
materials saved $100 over the pre-coated version. I'm not really a fan 
of rattle can on an exhaust, but that's another issue.


On 3/21/13 11:59 AM, Dennis Stiefel wrote:
>
>
> does anyone have any experience with these after market mufflers? they say
> you can use the stock heat exchangers but it doesnt look right to me. also
> the muffler looks pretty close to the rubber boot for the air intake, could
> the heat damage the rubber? thansk kk
>
> I've been thinking about getting a turbo blanket out of a junk yard that has
> medium to heavy duty diesels trucks and modify one to fit between the
> exhaust and boot to get me by till I can get a stock muffler and upper heat
> exchange.
>
> Dennis Stiefel
> 72 Fastback FI MT
>
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