Yes, we used to do it on the B20A based MF204B Formula 3 engines. We tried two ways, one was welding around the top of the bore to the outer block casting and the other was drilling and tapping down between the sleeve and block casting, then inserting an aluminum bolt and machining it all flat.
Worked great for high comp atmo engines running coolish temps (F3 ran 16:1 and at 55C from memory) but I don't know how round the bore would be under big boost and high temps.
Competition Systems Motorsport Electronics
Magneti Marelli, Jenvey and Digitek Corse
Melbourne, Australia www.compsystems.com.au
block posting has been done for many years, heavliy used in nascar.
i have done it with no drama's, its way better than block gauard, and advise dynodave that you dont get heat spots, if he hasnt ever done it he wont know. my 2 cents
block posting has been done for many years, heavliy used in nascar.
i have done it with no drama's, its way better than block gauard, and advise dynodave that you dont get heat spots, if he hasnt ever done it he wont know. my 2 cents
So, what your saying is that whatever works on a Nascar V8, is automatically going to work on a b-series I4?
There are always people in the industry that swear by it, and those who wont touch it with a 40ft pole.
True, and same can be said about block guards.
Even proof is sometimes confusing with some guys running 20psi through a block guarded block all day long and beating on their cars for 100,000kms+ with no probs - and then you got the guys who are running a mild tuned N/A setup that blame their engine failure on the block guard....
I really think that - like block guards - posting is something that you gotta do right in order for it to work correctly and not screw your block.
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