Thought crossed my mind. I’ll rerun it with the correct gasket torqued down, the stiffer springs, and mock solids. It’s a good point considering I measured 0.030” during my quick check earlier that evening. I only need 0.015” to feel better, but I’ll likely check other cylinders as wellYour sure that soft spring is not hanging open or not following the cam profile? Have had that happen in the past, that is reason why those mock up springs are a bit stiffer.
I degreed it twice, breaking it down in between. ICL was to be 107 and I got 106.5 And all the events lined up fine. But now I want to check a 3rd time. Just need to fabricate something to mount degree wheel on crank.Also you sure that cam is degreed right? I'm suprising Ed would not have that exhaust valve opening sooner which would create more clearence on the intake side.
Stock ‘88 forged pistons, so 0.010” in the hole? The 9333pt1 is 0.047” compressed so if anything I really should go thinner? But the stock gasket is 0.040” so is quench that bad from the factory?Forged or hyper pistons ?
I would put the 9333pt1 gasket and regular springs on it and measure again.
Also do you know your quench number , thicker head gaskets could make that less than desirable.
Not uncommon for older smog engines to have a lousy quench, so I wouldn't be surprised.Stock ‘88 forged pistons, so 0.010” in the hole? The 9333pt1 is 0.047” compressed so if anything I really should go thinner? But the stock gasket is 0.040” so is quench that bad from the factory?
Don't get too down yet there should be some reasonable options to solve it.Best estimate is that pistons are equal to deck height. I measured three and found them around 0.000”-0.003”. I found published data suggesting 0.008-0.0013” below was typical, but I’m not seeing it here. I see less.
Original head gasket measured out around 0.045”. I’ll need to sacrifice one of the 9333s and torque it down when i measure next. I need to be 100% sure.
Quence with the 9333s would be 0.047” + 0.003” giving me 0.050” quench which might be a tad high.
I’ll reset the stiffer checker springs and mock solids and recheck. The light springs didn’t collapse the lifters but the checker springs do
Not gonna lie...a little bummed. But everything can be solved. Just a matter of money and where to throw it
Your right on the intake side, but it’s a maybe on the exhaust. The exhaust valve does line up with the relief so unsure if a flat top piston would allow the same clearance as I measured.Now wonder the intake is so big it does not even come to the original valve reliefs. So in theory you could run a flat top piston.
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