Holy Piston
#31
#32
Holy Piston
Firefly is dead on ! JE has problems I have seen 3 JE raptor pistons the first split the opposite of the wristpin the second 2 were the same as in the pics and each one has had differnt machining on the wristpin quarter or skirt and longer pin and now the snaps are even further out for the longest yet .
and they havent replaced a single one .
Does anyone else make pistons for the rappy BB
and they havent replaced a single one .
Does anyone else make pistons for the rappy BB
#33
#35
Holy Piston
I just got a call from Brian at JE about the piston and I just sent it off Friday. [img]i/expressions/face-icon-small-shocked.gif[/img] A really nice guy and very informative. Anyway he feels the main reason for failure was detonation which could have also been creating a bad harmonics. The bad harmonics could also be partially to blame for rod gaulling and failures. Unfortunately I threw out the rings, spark plug and wrist pin before I talked to him prior to sending it in, with those parts to look at he could have given me a little better assessment.[img]i/expressions/face-icon-small-frown.gif[/img]
#36
#37
#38
#39
Holy Piston
I would have to agree with Gary, we run JE 102mm at 12.6:1 on pump gas. I have had Wiseco piston's (our 324gram design stock car pistons) crack along the valve relief, a larger radius fixed the problem, but have never had a problem with JE.
How much timing was being run with this piston? Here is a video of one that went together in the spring and has been pounded since (12.6:1)
RayRaptor
How much timing was being run with this piston? Here is a video of one that went together in the spring and has been pounded since (12.6:1)
RayRaptor