cant get oil clearance 2 crank correct, its approx 0.045

any ideas

 

So are you saying that the bearing clearance on the big ends or the mains is four and a half thou ? [ That is .0045 ] .045 is best part of a lot more

If they are 4 and a half thou then the crank is scrap. DO NOT even think about grinding it. Buy a new one.

David APi

 

yeh, but i had now probs with crank when i took it out, only done it for piston slap. is there slightly bigger bearings. what would make the crank become scrap.

 

ok, this time i done it right, with silicone spray, exact 2 instrustcion and i got

thrust - 0.030
2 0.025
3 0.040
4 0.040
5 0.035

all withing limit

3 and 5 have the recess io bearing giving a not a good reading. just on edges, but still in limit.

any1 clarrify, im sure im ready for rods now

 

Think that's mm, not inches...

 

If it had piston slap why have you taken the crank out ?

 

changing rods and bearings