Quote:
Originally Posted by EvolutionRevolution
I have HKS EL header on now, I'm waiting on a Gruppe-S UEL header which should arrive Monday. Want to compare the two.
Not sure I follow?
Inside and out coating is supposed to be superior to just outside coating.
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Cracks can happen, even on coated pipes. If you need to weld or get the cracks welded then how would someone weld a coated pipe? Unless the crack is at the end, sanding the inside of the pipe to remove the coating to get a proper weld is virtually impossible.
If the coating fails/chips then it could get sucked back into the combustion chamber. This can sometimes happen depending on the expansion differential between the coating and the metal.
This is worth a read. Just opinions, but it summarizes some concerns:
https://www.ferrarichat.com/forum/th...eaders.159356/
Opinions can vary.