Exhaust Wrap? or no?
#16
Coating the inside? With a spray? I don't know how you could wrap the inside with the tape cloth.
#17
the negatives of heat wrap is possible but hypothetical only. i havent read or heard even ONE source stating any proof. the positives of wrapping is undeniable. i agree with Del Turbo. i've wrapped the stock cast manifolds for 50 - 60k miles already and i never seen significant increase in surface rust when wrap was removed.
#18
I would say leave it off, and wrap your downpipe, since our downpipes are closer to T/C and oil pan, my downpipe is wrapped for about a year now.
Last edited by tweakdsm; Dec 9, 2009 at 08:08 AM.
#20
the cracking occurs because people wrap them incorrectly. if you over lap too much it creates hot spots in the heavily wrapped areas whoich eventually lead to the cracks. Ive also caught my old wrapped tubular mani on fire, but thats cause i was dumping straight on it....hadnt made the dump tube yet haha. and i hated having fiberglass on me everytime i worked on the car and all over my shop floor!
#21
I have experience with a down pipe that I wrapped on my WRX. The car was my DD. The pipe was a year old when I decided to wrap it. It was made by a company called M2 Performance. In 15 months I needed to replace the down pipe because of a crack. The down pipe back was still in good shape, as well as the bottom of the down pipe that wasn't wrapped. The pipe looked great until I removed the wrap... because of this I would not use the wrap on a DD.
as for the statement about it catching on fire, i've been in the 240 community and most are even more ghetto then DSMers.... 9 outta 10 guys were ebay'd out from fender to fender lol. seriously only way it will catch fire is if your leaking something flamable or the heat wrap is cheap and cant stand the temp.
Last edited by mifesto; Dec 9, 2009 at 10:51 AM.
#22
Almost every ss part herein is 304 stainless. 304 is basically consumer grade, mild ss. It's good enough to suit most applications, but it isn't impervious to a strongly oxidative environment.
To truly get something that is pretty much guaranteed to outlast the car, 321 ss is the ticket. It is also considerably more expensive.
Just FYI
To truly get something that is pretty much guaranteed to outlast the car, 321 ss is the ticket. It is also considerably more expensive.
Just FYI
#23
Search, there are a few threads on here about this. I do not believe it is an issue of too much heat, its the heat cycles. The wrap can get the header or tubing very hot and the ambient temperature or water can cause a quick and larger than normal temperature change and crack the tubing. I might be wrong but this is as I understand it.
#24
by coating the inside of the manifold its the coating that wears away not the actual stainless.
Chris.
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BushBurninEvo
Evo Engine / Turbo / Drivetrain
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Oct 14, 2005 03:58 PM