Quote:
Originally Posted by gsxr
The block changed at that .971 engine number break point, and the gasket is block-specific. The heads received multiple upgrades as well but those updates were independent of engine number.
The final revision to the #22 head casting was to fully enclose the oil passage ahead of the #1 cylinder to help eliminate gasket failure in that location. Previous updates helped prevent cracking under high thermal loads.
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That is interesting because the later gasket matches my early block, but not my early head.
Not much makes sense.
