I am reassembling my completely rebuilt 1380cc motor.
I am going mostly by the Des Hamill book "How to powertune the 1275".
When I measured crank runout with a dial indicator last night, I saw the
needle swing from -0.0006 to +0.0006.
I am having trouble interpreting this. Des says "crank runout" must be
less than 0.0005". So do I have 0.0006 or 0.0012 ?
Vizard says that BL deemed cranks bent by as much as 0.003" as OK. By this
measure, my crank would definitely be ok, but again I don't know how they
measured this.
The machine shop only polished the crank, then balanced it. I don't know
if they checked runout and thought it was ok, or didn't check it.
I went through a LBC repair shop as a middle man, so I can't just call the
machinist.
Oh, also, how does one measure piston to bore clearance with a feeler
gauge? Do I have to take the rings off one of the pistons to do this?
Thanks,
Ulix __/__,__ ___/__|\__
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'67 Sprite '74 X1/9
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