[Shop-talk] header wrap

[Karl Vacek]

You need to put metal down over the holes first.  The fire in the exhaust 
will burn and degrade the wrap material if it's directly in contact.  The 
wrap depends on metal to take the brunt of the actual fire - then it'll 
further insulate the pipe.

On November 27, 2022 12:35:19 PM "Tim ." <tims_datsun_stuff at outlook.com> wrote:
> I used a couple feet to patch a break and muffle the noise in an exhaust 
> pipe on my wife's DD. It was held in place with a can and hose clamps. It 
> worked fine for a couple weeks then started to get loud again. Yesterday I 
> pulled the can to see what was going on and just about all the wrap was gone.
>
> From: PJ McGarvey <pj_mcgarvey at hotmail.com>
> Sent: Sunday, November 27, 2022 8:02 AM
> To: Tim . <tims_datsun_stuff at outlook.com>; Shop Talk <shop-talk at autox.team.net>
> Subject: Re: header wrap
> I’ve only seen it start to do slowly deteriorate on my own car where the 
> wrap sees the most heat coming out of the engine, or where it gets 
> disturbed such as during a spark plug change - which is the same spot on my 
> car.
>
> From: Shop-talk <shop-talk-bounces at autox.team.net> on behalf of Tim . 
> <tims_datsun_stuff at outlook.com>
> Sent: Saturday, November 26, 2022 12:46:17 PM
> To: Shop Talk <shop-talk at autox.team.net>
> Subject: [Shop-talk] header wrap
> Anyone ever seen or heard of header wrap disintegrating?
>
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