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Old December 4th, 2017, 11:54
anthrax323 anthrax323 is offline
NAXJA Forum User
Join Date: Feb 2009
Location: San Antonio, TX
Posts: 1,232
2001 XJ stroker build: keep 0331 head?

My 2001 XJ made it 240,000 miles before breaking a piston skirt. I can say with 99.999% confidence this is the original 0331 head (non-TUPY), as I've owned it since ~110,000 miles. Never had a single issue with it.

Given that it made it this far, is it reasonably safe to assume that I have one of the good 0331 heads? Or should I plan on locating a TUPY or other aftermarket head as part of the build?
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