SOHC.co.uk Forums > CB750

Engine Bearing Journals

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Brett72:
Evening all. What are the general thoughts on using the original bearing journals? i have stripped the engine down and they look good. Would you just plastigauge them when reassembling or go for new?

MrDavo:
Interesting question.

On one hand you only should ever intend to be in there once, so why wouldn't you, a new set of bearings should now outlast you, given how long the old ones lasted.

On the other hand, as I know from experience, however expensive a set of shells from Japan look now, wait until you add P&P, Duty, Vat  etc, it will make your eyes water.

Plastigauge then decide, I reckon. Also you have to select the right colour shells if you replace, but there's people here to help you with that. You can also have fun looking for the near invisible scratched on codes on the crank cheeks, from when they measured the crank journals in the factory.

Nurse Julie:
Can you post some photos of them so we can all see what they look like.

Brett72:
Just a couple of pics Julie

Bryanj:
Oil hasnt been changed often enough, replace them

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