Originally Posted by
Maximo
How many shims did your engine come with stock ? reason I ask is that we have removed shims from at least 40 of these JL engines and not a single one has detonated...the stock compression ratio is quite low with the standard shimming and there would be no harm whatsoever removing a shim...However that is if they all come with the exact same shimming....
Mine has 3 shims in it,but they look rather thick compared to other engines.I didn't measure them but am going to say they aren't the standard .1mm shims.