RB Concept Engine Thread..
#815
No problem Allen. I don't know if you have read the JL .21 thread, but you can pull a shim out of the Killer 9 (JL .21 & Killer 9 share the same internals)since it is so overshimmed from the factory. It is coming shimmed at .8 -.9 with four shims, after break in you might want to pull a shim out to lower compression and make a little more power. I will be running my Killer less one shim this weekend at a well heated indoor track to see how it goes.
#817
YOU HAVE TO USE THE LG2 C6 ONLY, THATS THE ONLY ONE DESIGNED FOR THAT ENGINE, THE WS7 HAS IT'S OWN ALSO, THEY ARE NOT THE SAME.
#819
It doesn't have to be a L2G. You can use a C5 or C6, not sure but I think the C4 is the same also.
Last edited by aaron joy; 12-22-2009 at 09:02 PM.
#821
Yes, I was told you can safely pull one shim and be ok with 30%. The engine is set with a very low compression ratio from the factory. If you don't want to risk it I will be trying it this weekend and will post back what I find.
#822
Pulling shims out of an engine can really help the performance as well as steady out an erratic idle. It is VERY important that after pulling shims out you remove the glow plug after a run and check the top of your piston. If you see any tiny pit marks on the top of the piston you need to put that shim back, even if that's the best your engine has ever ran you need to put it back. That is a sure sign of pre-detonation and continued use like that will eventually kill your engine.
#823
No problem Allen. I don't know if you have read the JL .21 thread, but you can pull a shim out of the Killer 9 (JL .21 & Killer 9 share the same internals)since it is so overshimmed from the factory. It is coming shimmed at .8 -.9 with four shims, after break in you might want to pull a shim out to lower compression and make a little more power. I will be running my Killer less one shim this weekend at a well heated indoor track to see how it goes.
#824
Thanks Mike! Yup Bumps and Jumps, as long as the weather holds out and we don't get anymore snow. I am riding up with Ofir and Jersey, always a fun time with those two!! I don't think we have talked in person before, if you have any questions I am more then willing to give you a hand.



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