Originally Posted by dotan23

i broke in my 7 port today after being replaced by go tech (the piston broke on the first time right after break in). by the way excelent service.

i shimed the head as massive sayed at 0.6 mm shims.
i did notice that the engine lack the the low end punch.
is the shimming make big difference?
will it be more agressive with less shims?