68 charger 440 hot start problem

[Outbackbobcat]

I think I know the problem but am interested if anyone else ran into this. Fresh rebuild runs great starts cold great, hot won't turn over, huge battery cable new 1000 cold crank battery, new high torque mini starter, still a problem, 14 degree advance, 35 overall, 10.5 compression. Here's what I fear is the problem, I installed both top and second rings at .022 - .025, I'm now reading the top should be more like .028. If I leave it cool down about 20 mins fires up, I'm thinking the rings are binding in the cylinder

 

[WileE]

Welcome... I guess. "Won't turn over" ok.... turn the key and... WHAT HAPPENS ? Engine locked ? Cranks but no fire ? My question is: Do you have heat saturation in the starter cable ?

 

[fine69]

Maybe it’s simpler? Like fuel evaporation or whatever it’s called when your gas boils in your fuel pump or carb. You could try a carb spacer and heat shield fuel lines.

 

[R413]

Headers? Heat soak starter.
Battery in trunk? Or underhood?

Both battery cables need to flow the same amount of current.

 

[Geoff 2]

You only need large ring gaps with hypereutectic pistons. Is that what you used?