SOHC.co.uk Forums > CB750

Cracked crank cases.

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Bryanj:
That's a lot less damage than I have seen repaired by a welder.

There were several changes of output shaft and bearings you would need to check at somewhere like motogrid for part numbers and what models they were used on mate

royhall:
Cheers Phil. That number is reasonably close to ours (2333840) is that a K5 set? That would get Alan's project back on track, I'm sure he wont mind driving up to Wigan from St.Annes. Not been able to contact him yet, so the problem may be sorted before he even finds out about it. ;D  Thanks Phil will be in touch.

steff750:
 ;) i have had good results with chemical metal i think it was called ? but all depends on the damage
 the problem you got is the lower case is pushed in, if its  not put back in place, it will catch the gearbox sprocket not much room behind there, i would not like to try it with them cases unless you can get that crack closed up :-\

royhall:
Looks like yours are K7 Phil. As Bryan says the output shaft bearing is larger on those. What a shame. Its 341 product code I need that appears to span K2 to K6. Thanks anyway.

philward:
Ok Roy - if your struggling, don't forget that K5 engine
Phil

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