Originally Posted by jag
This information is inconsistant with what is in the manual. The engine comes stock with a .20mm and .10mm shim (.30mm total) for use with 20-25% nitro. They recommend adding another .10mm shim (.40mm total) for 30%. Where did your information come from?
Jag for the winternats we added 2 mega shims because the dimension from the factory are not the same when you actually measure the shims it be slightly less than the manual states. I think we actually measured .45 after we added the 2 shims.
You can also call pete from pnp he also ran the IDM @ the winternat's as well
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