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Re: [T3] exhaust wrap (was vapor lock cont'd)


On 24 Nov 2005 at 2:41, David Y wrote:

> Mine (the ISP version) has no heat shield. Has anyone tried the 
> header/exhaust wrap? Mid-America's catalog claims lower under-the-
> hood temps, but the stuff is pricey @ $49. I figure I could at least 
> wrap/isolate the header, though there's no way around the toasty 
> bellows. Tin foil perhaps...?

You can buy rolls of soft thin aluminum at Home Despot as roof 
flashing for pretty reasonable prices. I have some here if the price 
for a whole roll seems too high. I'd think that one might be able to 
fashion a reasonable shield out of something like this and use hose 
clamps to clamp it to the header pipes. 

There's no big secret to a heat shield. It's just one or more layers 
of some material separated from the hot part by a layer of air. The 
only tricky part is to design it so that the engine vibration doesn't 
tear it apart too quickly.

-- 
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Jim Adney, jadney@vwtype3.org
Madison, Wisconsin, USA
*******************************

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