25-11-2019, 02:39 PM
I am slowly rebuilding my spare engine, I have fitted a re-ground crankshaft and connecting rods.
I then fitted the new pistons without rings and the block to check piston height, as I have skimmed the block and re-bored it.
I found No.1 & 4 pistons 0.020” above the top of the block No. 2 & 3 flush with the top face of the block.
Is this possibly because the Re-metaled rods have been machined to different lengths, or the throw of No. 1 & 4 is ground wrong?
I have moved the position of the rods and get the same result so it looks as though it is the rod length.
Does it matter that two pistons will be higher than the other two, as long as the pistons do not touch the head?
Would removing 0.020” off the high pistons be a good idea?
Roger
I then fitted the new pistons without rings and the block to check piston height, as I have skimmed the block and re-bored it.
I found No.1 & 4 pistons 0.020” above the top of the block No. 2 & 3 flush with the top face of the block.
Is this possibly because the Re-metaled rods have been machined to different lengths, or the throw of No. 1 & 4 is ground wrong?
I have moved the position of the rods and get the same result so it looks as though it is the rod length.
Does it matter that two pistons will be higher than the other two, as long as the pistons do not touch the head?
Would removing 0.020” off the high pistons be a good idea?
Roger
Location:- Haverfordwest, Pembrokeshire.