justjap 180sx

[colm]

i measured the crank tonight with a micrometer, they measured 54.985-54.965mm i think it was. We had an undamaged crank there too and compaired them both and barts was actually measuring more consitant across all than the good one. It didnt spin any of the bearings.
There is very slight scoring on the journals, you can see them on the surface but are very hard to feel under your fingernail, Not perfect but far from fucked. there was unbelievably little damage on them given the bearings were knackered

[EvojeepGal]

Drive 'er on so

@JH - No probs

[robbie@tdp.ie]

i measured the crank tonight with a micrometer, they measured 54.985-54.965mm i think it was. We had an undamaged crank there too and compaired them both and barts was actually measuring more consitant across all than the good one. It didnt spin any of the bearings.
There is very slight scoring on the journals, you can see them on the surface but are very hard to feel under your fingernail, Not perfect but far from fucked. there was unbelievably little damage on them given the bearings were knackered

Did you measure the bore of the con-rods when torqued up ? Did you check the line bore of the bock ?

Robbie

[bart]

Did you measure the bore of the con-rods when torqued up ? Did you check the line bore of the bock ?

Robbie

maybe colm could help on this one....

[gem-s13]

maybe colm could help on this one....

he means did you torque up the caps on the con rods and measure the inside of the hole if the rods were over heated or run for a period of time with the bearings gone the hole can be gone out of shape causing odd pressuers or loosenes in one or more spot on the crank causing bearing failure,

and by the line bore i pruseme he ment that the bores (cylinders) are 100% in line and square to the crank journals if not the rod will be at a slight angle to the crank and wear one side of the bearing

[robbie@tdp.ie]

he means did you torque up the caps on the con rods and measure the inside of the hole if the rods were over heated or run for a period of time with the bearings gone the hole can be gone out of shape causing odd pressuers or loosenes in one or more spot on the crank causing bearing failure,

and by the line bore i pruseme he ment that the bores (cylinders) are 100% in line and square to the crank journals if not the rod will be at a slight angle to the crank and wear one side of the bearing

Your 50% right Gem.. The con rods go oval form the pounding and heat. If there not re honed they will cause instant bearing failure again. The line bore is the main bearing caps and straightness through them.

Robbie