Update for those who have helped with suggestions on my overheating problem:
I took the block and pistons into Portland Engine Rebuilders today and told them they needed to hone to .0045. I explained that it all seems to have come down to the issue of the sleeves not transferring heat like a simple bore of the block, combined with the already questionable water distribution in the block. They posited the idea that the overheating may never be solved because of the sleeves. I've sleeved one other engine back to standard, and the builder claims he set the piston clearance at .003. That engine has never locked up, broke in like normal, and runs great.
At this point I am out of options. I'm going with the .0045, new rings, clean block, and new radiator, and if that doesn't solve this, I'm done.
I took the block and pistons into Portland Engine Rebuilders today and told them they needed to hone to .0045. I explained that it all seems to have come down to the issue of the sleeves not transferring heat like a simple bore of the block, combined with the already questionable water distribution in the block. They posited the idea that the overheating may never be solved because of the sleeves. I've sleeved one other engine back to standard, and the builder claims he set the piston clearance at .003. That engine has never locked up, broke in like normal, and runs great.
At this point I am out of options. I'm going with the .0045, new rings, clean block, and new radiator, and if that doesn't solve this, I'm done.
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