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Old 02-02-2008, 01:00 PM   #1
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Default see what header wrap does to a PLOG

this is after only 7-10k miles









taken from this thread: http://www.clubgp.com/newforum/tm.as...mode=1&smode=1
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Old 02-02-2008, 01:17 PM   #2
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WOW

thats pretty rock solid proof, on why you should'nt use header wrap!
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Old 02-02-2008, 01:24 PM   #3
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It'* been a no-no for stock manifolds and headers for awhile. Cast manifolds might be ok for awhile.

Use header coating. Even DIY. Never paint (even if rated for headers, it'* worthless). If you MUST wrap, use a LOOSE sleeve type wrap that will allow them to shed moisture and breathe.
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Old 02-02-2008, 01:52 PM   #4
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WOW, that'* bad. I'm glad I used powder coating on mine.
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Old 02-02-2008, 02:10 PM   #5
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Powder coating? Why didn't you use header coating?
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Old 02-02-2008, 04:54 PM   #6
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Doesn't it mostly affect welds? I have my crossover pipe on my PEM'* wrapped in header wrap and it does make a difference. I can touch the wrapped crossover with my hand while the car is running where touching the front manifold would quickly blister my skin. I'm pretty sure Rogue'* headers have the crossover wrapped as well. So far I've had my crossover wrapped for about 9 months and it'* been fine.

Would i wrap the front or rear manifolds? Never. The proof is in the pics.
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Old 02-03-2008, 12:02 AM   #7
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The extra heat you get from header wraps also means more heat expansion and contraction, those welds probably just expand and contract at a different rate than headers itself. Those are some big cracks though!
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Old 02-03-2008, 12:13 AM   #8
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It has nothing to do with expansion and contraction. It has everything to do with trapped moisture and heat.
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Old 02-05-2008, 03:35 AM   #9
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Is it published anywhere what they use as welding material? I'd be surprised if stainless oxidized that much already..
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Old 02-05-2008, 08:23 AM   #10
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I know this is a first gen PLOG, but on ZZP'* site, they state "stainless tig welds" for the current version.
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