SOHC.co.uk Forums > CB500/550

Crank bearings/shells

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ginger_jim:
Yep the conrod marks weren't there.  I could read the marks of the crank lobe- they were all 4's but there was nothing on the conrods, that was after cleaning with petrol and using a Inspector Clouseau type magnifying glass :-)

We'll see what happens anyway.  Loads of spanner mates down here who swear by SEP.  Ill keep you updated !

ginger_jim:
P.S Bryan had sent me the Honda service bulletin so I knew where to look!  Bryan also said the the marks are etched onto the conrod half but I could see bu££er all!

matthewmosse:
Crank can be sent for £10 or so, you could probably send the cases too for that price. For my part I'd think it was woth the expence to know it's right.

matthewmosse:
True, properly speaking I think plasitigauge or some such product should be clamped in the cases and the ammount of streach measured. This cannot be done without cases so the best they could achive is to measure the crank very accurately and supply according to that and rely on total accuracy and consistency in the manufacure of the cases. I know Honda are really good, but that really good every time? On the other hand it's streaching my skills for me to do that job - part of the reason I just swap engines if needed.

Bryanj:
Perhaps I am cynical but i don't think there is a machine show in the UK that can measure to the accuracy of the original Honda air gauges

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