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Any negative effect from heat taping headers?
This would be on an air cooled 911 with SS headers. The positives are less heat transfer to the engine but will holding the heat on the SS instead of letting them cool in the open air negatively impact the steel or even the exhaust ports of the heads? Just curious, haven't seen any 911's done but it's common on other race cars.
Posted in the 911 Tech Forum also, not sure how much crossover there is..
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Gary R. |
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It would depend on the version of stainless that is used in the headers.
304 is the bottom end of stainless....308 and 316 are better quality, but I don't know if they are less prone to cracking than the 304 stuff. My first question would be...is there a strain on the welds? If the headers were "forced" into position for welding, then the heating/cooling would eventually break the weld. Good quality (not cheap Chinese) units will last for centuries. Bob
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Bob Hutson |
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Join Date: Mar 2009
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With all of the modern ceramic coatings available wrapping becomes less appealing. Wrapping traps water and smells funky when wet.
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Chain fence eating turbo
Join Date: Dec 2008
Location: Austin, TX
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If anything from my basic knowledge of metals, the wrap should slow the cooling down which actually extends life of metals.
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Join Date: Oct 2003
Location: Central Fla
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header wrap
We have seen mild steel headers turn to dust pretty quick due to retaining so much heat, and moisture. SS will tolerate it better, but will still be effected, all things being equal SS headers do retain heat better than mild steel , because of that we see a little better power numbers, on a 911 engine with them being underneath I would not wrap them, either coat them or SS
Mike Bruns
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The two most useless things to a driver are the braking distance behind you and nine-tenths of a second ago. |
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Max Sluiter
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Inconel+ceramic!
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1971 911S, 2.7RS spec MFI engine, suspension mods, lightened Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance |
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Less brakes, more gas!
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![]() ![]() '82 Euro SC 'Track Rat' 22/29 Hollows, 22/22 Tarrets, Full ERPB F/R, Rennline Tri Brace, Glass bumpers, Pro 2000's, 5 pts, blah blah blah '13 Cayenne GTS |
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Max Sluiter
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Yes, but they would be nice.
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1971 911S, 2.7RS spec MFI engine, suspension mods, lightened Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance |
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Quote:
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Ed Hughes 2015 981 Cayman GTS 6 speed,Racing Yellow Past:1984 911 Targa (Ruby), 1995 993C2 (Sapphire), 1991 928S4 |
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Join Date: Jul 2003
Location: Valencia Pa.
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I used to tape my headers, and like stated above, the steel ones turned into dust in about 1-2 seasons. I also suffered an engine fire that I believe was caused by an oil leak that absorbed into the wrap and ignited when they got hot. No more header wrap for me.
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No left turn un stoned |
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