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Basket case to Cr750 rep.....hopefully!

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Bryanj:
If the CRANK CASE codes are the same the shells can be transfered

Trigger:
You will have a lot of measuring up to do. Make sure you keep the con rods in the right weight set.

burchy75:
Managed to find all the codes that I think I need to work out what bearings I’m going to have to pop in.  The main crank code was a right pig to find and then read.  You needed just the right light and angle to see all the etched letters and numbers but after a few minutes of juggling crank and torch I got there.

So the numbers that came back are BBBAA from the K1 cases, J ACCAA P L4444 from the KO crank itself.  The rods themselves were all 2F.

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Now from the table in the book I have here I’m looking at all green bearings for the rods themselves – if they are all in spec.  The original green bearings themselves all looked in good nick when I split the cases so may be able to reuse possibly once I've checked clearances

Trying to work out the rest it looks like I’m going to need 10 x green (possibly only 2 if I can reuse the original rod bearings), 4 x brown and 4 x yellow but I’m going to go over my 5 min calculations to make sure it’s all correct before attacking the thing with Plastiguage.  With the play in rod 1 I think this might need a different bearing itself but the plastiguage will help I guess

I’m kind of thinking of getting one set of green, brown and yellow bearings for now so I have test each point and have a new size bearing if one or more are slightly out of one specific size, if that makes sense.  I can then double check everything before ordering my final bearings.

Trigger:
The rods are from a later K, maybe K2 onward, make sure you know where all the rods came from on the crank and the right way round, if looking to re use shells  ;)

burchy75:
Oh bugger, I thought the rods were K0 as they came straight out of the K0 engine, oh bugger, that means the cases have been split before so could be loads of unusual stuff in there.

As for the bearings themselves I may end up just going with new bearings all round just to be on the safe side.

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