Header Heat Wrap on Down Pipe?

[RBellah]

Has anyone tried the heat wrap for headers on the down pipe? I was thinking it would reduce the area heat where the down pipe goes by the transmission. Any thoughts on this?

 

[weldingmiller]

I would think it would help with the heat, just have to remember that anytime you wrap exhaust parts you trap moisture. Also be sure the wrap is rated for the temps the downpipe is capable of creating. The wrap would prevent frequent inspections to check for deterioration. Though if you were to check it periodically and use the appropriate wrap i wouldnt see any problems. I definately like the idea though.

 

[DE Jeeper]

i have mine wrapped. the heat from running the water/meth kit while towing was making the down pipe real hot ant it was melting the poly line that ran to the pac brake. between the wrap and a ss teflon hose to replace the poly one i have fixed the problem. you should not have any problems.

aaron

 

[Wingate]

well, in ft. worth, you wouldnt have to worry about salt on the roads in the wintertime getting inside the wrap and corroding the pipe. . but, as weldingmiller stated, moisture can/will be your enemy. If you have aftermarket fully stainless exhaust, then it should be an issue... the header wrap will give up long before it hurts the pipe.

Im not really sure if there is enough heat being generated in that area that can actually transfer and soak into the transmission. Maybe reflective heat tape installed on the side of the transmission to bounce the heat back?? Another option, although more expensive, is to pull the pipe down and have it ceramic coated on the inside... Or , if you havent already, get rid of the catalyst... . that should help lower exhaust temps around the transmission. .

Just my . 02

 

[cerberusiam]

Heat transfer from the DP to the transmission will be neglible. The trans will create much more heta internally that it will ever absord from the DP.



Wrapping the DP has its benefits in enhancing exhaust flow, turbo spool, etc.

 

[MChrist]

I wrapped my DP several years ago, and the first (and only) thing I noticed is that the truck seemed a lot quieter. Apparently, the wrap knocks out whatever upper frequency sounds exist in the DP, so the truck sounds deeper.

 

[Prairie Dog]

I believe the down-pipe is stainless so rust shouldn't be a problem. The tail pipe isn't and tends to be the pipe that rusts out from what I'v seen.
I might wrap the pipe just for the noise cancellation.

 

[cerberusiam]

Diesels generate a lot more heat in the exhaust than a gas engine. If the truck is used frequently and does not sit constantly in a wet environment rusting the DP is usually not an issue.



The DP's are usually a lot better metal than headers so they don't rust or deteriorate near as fast.

 

[goodguys75]

to ceramic coat the exhaust... it must be new... cannot have soot in it... . fyi

 

[leaky gasket]

I wrapped my downpipe a few years ago also hoping to make my cab just a bit quieter. I did not notice any change to cabin noise but my ears definitely are not as keen as they used to be. when you do go to wrap your exhaust don't over wrap it,that's how the moisture problems begin. a lot of people copy what they see on race cars . they overdo it and turn a wrap job into a mummification. my downpipe has a single layer of 3 inch wide wrap with about an eight to a quarter inch of overlap that's it.

 

[CKelley1]

it works and can prove it. our trucks are 06's like yours, we have trans-cools on the g56's with temp gauges the truck with the manifold and exhaust side of turbo and down pipe runs a lot cooler than the ones without before we wraped them.

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