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which heads??
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[QUOTE]Originally posted by Mr.10psi: [QB] [QUOTE]Originally posted by Tom Renzo: [qb] Do you really think i do not know that!! Intake closest @ or around 10* ATDC. Exhaust @ or about 10* BTDC. I cut these pistons for a special application. As the pistons for this engine are obsolete. I had to reduce the compression to make them work. Here is the results. OVERLAP>>> This is the time when both the intake and the exhaust valves are open simultaneously.This is when PV is critical. With bigger valves and X overlap that is the danger point. Increasing lift always increases the chance of a wrecked motor from clearance issues. It has to be checked and i do it on every engine we build. Now there are engines that are known to be safe with certain combinations but checking is a must. Hope i cleared that up. [IMG]http://i600.photobucket.com/albums/tt88/tomrenzo/TCMOTOR020.jpg[/IMG] Sometimes you really have to get crazy [URL=http://s28.photobucket.com/user/tfalconier/media/IMG_0007.jpg.html] [IMG]http://i28.photobucket.com/albums/c209/tfalconier/IMG_0007.jpg[/IMG][/URL] [/qb][/QUOTE]Ill make it simple. Increasing lift doesnt effect or increases chances whatsoever period. The rest of what you said is right. [/QB][/QUOTE]
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