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Old 02-02-2013, 11:03 PM   #16
Counterfit
Scooby Guru
 
Member#: 124254
Join Date: Aug 2006
Chapter/Region: NESIC
Location: Rhode Island
Vehicle:
2006 06 SGM Slowbaru
"The Scoobinator"

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Quote:
Originally Posted by skimobile View Post

Sorry for the crapy cell phone response earlier.. Many headers have slip joints (where one section of the header pipe slides inside another). Usually the slip joint is contained with a bracket, wire, etc.. Wrapping your headers retains more heat in the header's stainless steel piping. The pipes can get so red hot inside the wrap that the pipe gets soft (while hot) and can easily bend, separate at the seams etc. It happened to me at Pocono long course. A heat-wrapped pipe caused the Perrin header to get so hot that it separated, pulled apart and blew hot exhaust gas all over the radiator, hose, wiring, etc., and even turned the header wrap into glass.. I'll see if I can dig up some shots for reference....

You can see the slip joint on the right (driver's side) in the pic of the header on Perrin Performance's website...
http://www.perrinperformance.com/sub...r-equal-length
Inconel, problem solved.
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