Mazda 323,Mazda 626 & Mazda 929 Whether the compact 323, the mid sized 626, or the full sized 929, these vehicles remain very popular even though production has stopped.

OEM head thickness and gasket shim?

Old 08-26-2016, 05:45 PM
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Join Date: Jul 2013
Location: NW California
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Default OEM head thickness and gasket shim?

I have a '93 323 w/ 1.6 engine. the head has been milled 2x. it's not terribly warped because the cam shaft turns easily (un-oiled) but w/ enough resistance to be noticeable if you're looking for it (as opposed to say a hot wheels axle). I suspect I need a shim but I don't know what the original thickness of the head is supposed to be. can someone recommend a shim source and reference the original head thickness spec.

effusive thanks

2 days later:
found out the orig thickness is 107.4 to 107.6 mm. max grinding allowance is 0.20 mm & I'm within that so I'm just replacing w/ a stock head gasket. for joy!

Last edited by greasegeek; 08-27-2016 at 06:33 PM. Reason: update
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