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150hp blackmax 95b high temp alarm at high rpm

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divedeep

Guest
"I am getting a high temp alar

"I am getting a high temp alarm when at high RPM's. I have replaced the water pump, t-stat's,poppet valve, and head gaskets. This has not helped in any way. Idle up to around 3600RPM no issues. Water pressure at idle 3psi and builds to around 6-7psi at 3600. When above 3600 the water pressure falls to 4psi. I did a compression check all is good 115-120psi. Any ideas on what could make the pressure fall instead of increase? Before this issue, the water pressure would average 12-14 psi at high rpm's.
Any help would be appreciated."
 
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