Morris Minor Owners Club

I have a crankshaft out my 1098, and there seems to be no scratches on the journals, could i still put it back in with new bearings without having to regrind it? Just another question my 948 engine has some tiny little scratches on the journals of the crank is there an easy way of fixing it? as i am on a budget build all tips would be very helpful.
P.s could a standard set of 1098 pistons be used in the 948 engine?
thanks

You don't have to regrind a crank every time you disturb it, only if there's damage/ wear.

I know many disagree, but I've also got away with throwing new bearings on a worn crank, depending on just what sort of wear it has and how much - The odd light scuff or very shallow scratch may be bearable (pun not intended) provided the pump is good and the jouranls are mostly pristine. What you don't want is journals that are worn to the point where the oil falls out of them quicker than the pump can keep it in - That's where you then get metal to metal, and the bearings will go very quickly.

Someone I knew said he got away with running some fine grade wet n dry round scratched journals, which is something I'd never even consider! But then, he was an ex-stealership mechanic...

Scratches or ridges make it very unwise to re-use without regrinding. Probably a waste of money on shells. The 1098 crank may be fine - it would be better to check the size with a micrometer. 1098 pistons CANNOT be used in 948 engine ! They are both larger diameter and shorter crown height. DO NOT wet & dry journals !!

paul.kissick wrote:I have a crankshaft out my 1098, and there seems to be no scratches on the journals, could i still put it back in with new bearings without having to regrind it? Just another question my 948 engine has some tiny little scratches on the journals of the crank is there an easy way of fixing it? as i am on a budget build all tips would be very helpful.
P.s could a standard set of 1098 pistons be used in the 948 engine?
thanks

Deep scoring is a definite no-no, but more important than light scratches (due to dirty oil) is ovality. Get the journals checked by micrometer in line with the oil holes and again at 90 degrees, any more than a couple of thou ovality, or undersize, should be cause for a grind.

Phil.

Thanks all for the comments have taken it all onboard. I'm off out to have a tinker on the old girl (the minor) haven't got a name for her yet.
About the 948 i was askin to see if it had been done before, as i done out a few calculations and it came out that the block would need bored by over 60 thou which i thought might be too much thanks .

It can be bored 65 thou - and then fitted with dead standard Mini pistons and rods - thus giving you a 998 engine. But the 1098 is another 100 cc up - and so is good for ~ 10% more power everything being equal. Ultimately - you can probably squeeze more power from a 998 because it can be revved much higher than a 1098 - but for any sane road use the 1098 is a better bet.