I run a stock mitsu with copper spray. I have run 36psi with no coolant pushing at all. And 10 back to back to back runs at 35psi on a dyno. I also run 28psi on pump gas, alsmost everyday. So unless you are decking the block and the head I would not use anything but a mitsu stock. Also I trq my head studs to 110 lb/ft so I think that has a lot do with my head gasket not blowing out on me.
~John
also find out wy it went out on you.
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Moon taxi: 9.45@156.9 mph 41psi 2011... Letting people down sense 2012.
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