Quote:
Originally Posted by Matt Monson
But riddle me this... These are EJ20K STI heads with shim under bucket. What about just plain standard Ej20K heads with shim over bucket. Wouldn't those be the same as those late Ej20G heads? Isn't it only because these heads are STi that there's any difference at all between the two castings?
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I think you are right. Only the STI, Spec C, Type RA heads have the shim under bucket from what I know.
If anyone cares I just converted a set of those shim under bucket to solid buckets like what is used on the MY04 and up engines. There was BARELY enough room to grind the valves to spec once the retainers were replaced meaning all of my shims were in the 488-499 range