Quote:
Originally Posted by strat61caster
Headers fail because of heat, metal that is constantly heated and cooled wears and can eventually wear out. Changing the way heat transfer happens in the engine bay means you're garage engineering your car's thermal management system, sometimes it works out, sometimes it doesn't.
The OE headers will fail if you put more heat into them then stock, I wouldn't be surprised if we see *more NA OE headers fail down the road, it will just take longer for them to hit that fatigue point.
http://www.ft86club.com/forums/showp...&postcount=364
http://www.ft86club.com/forums/showthread.php?t=93200
Not trying to start shit either, but promote understanding of why parts fail. Can sub-par welds be the cause? Absolutely. Poor materials? Yes. Altering the thermal environment the part operates in? Just as logical. |
A properly designed and manufactured header will not fail because of thermal stresses. A ceramic coating will reduce the max temperature delta and thus stress/strain due to differences in CTE between components.
Every header I've seen crack on here has been due to bad welds. Each OFH that cracked and was documented here showed a crack propagating from a fisheye in the weld. The OEM one looks to have cracked in the heat affected zone as well. Coatings have nothing to do with it as long as they're applied correctly. That's why is recommend getting the header coated from the manufacturer. OF doesn't offer that, so I went with JDL
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