Thread: 402 BBC build
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07-16-2011 06:49 AM #3
Thanks Pat for the response.
I checked the pistons, at least a few of them until I found they had 0.005" clearances from the ideal bore. this I think is too much. I also checked the rod bearing roundness until I found one that was 0.0025 out of round. From these results I think I should go ahead with boring the block to 0.060", new pistons, and unfortunately new rods. I haven't check the crank yet but after finding the condition of the rods and inspection on the rod bearings I think the crank should be turned. This means it would be 0.020" undersize now. From what I have read this is ok.
I could pickup a used engine and salvage parts to save $ but I don't want to get into it and find similar results. Thought I better go new.
Anyone have any advise they would like to share about these results?





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A belated Happy 78th Birthday Roger Spears
Belated Happy Birthday