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Originally Posted by BOBTAIL
.Also the T4 heads seem to poorly manage the heat once you get in the 200bhp range the underside of the head seems to hold the heat in and distort the sealing surface.
My 2 cent fwiw
Paul
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I just reread this and I think you have a point: Why else would Klaus make an eleborate 'under-side-cooling' ducting for his cooling shroud system and why would Remmele adapt the existing Lackstätter design (basicly the engine plus heads) by adding huge amounts of fins underneath the heads?
FWIW, I never understood the 5th-stud design where they only make an extra head stud at the
top of the head stud pattern instead of underneath...
especially, as the bottom row of studs are not only longer, but also have an extra 4mm of stud spacing! Obviously, if there is a problem, it lies at the bottom of the heads...Because of the aformentioned 2 issues, the exhaust ports being at the bottom may not even matter that much (hence the Remmele design where the exhaust ports are at the sides and he still gave it extra fins at the bottom).
Paul , you get your 2 cents returned
