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Reply to "Question for the Bosswrench"

thanks for the thoughts. I've ruled out too tight lifter bores. The lifters are probably ok, and show the marks you mentioned. I'm running a standard oil pump, with the high pressure spring. The oil does heat up, but the cooler is not connected yet. Maybe that's all the problem. Aftermarket guages say oil temp up to 220, water at 170, and pressure at idle will bleed down 10-15. Under load at 2500 rpm, the oil P will shoot up to around 40 PSI. I'm hesitant to rev it higher. Bearings all looked good. The block has some Moroso block filler in it. The top 3 inches or so of the cylinder wall is still exposed. Only the bottom inch or 2 has filler. could the filler inhibit the proper transfer of heat out of the oil??

Dan
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