SOHC.co.uk Forums > CB350/400
main/big end bearing size differences
Matt_Harrington:
If measurements are all within service limits, then I wouldn't worry!
Dolomite_:
--- Quote from: McCabe-Thiele (Ted) on April 04, 2024, 01:06:39 PM ---I'm assuming you have put a Brown shell in number 2 main journal - if you have ruled out crank ovality might be worth tracking down a pair of black shells to reduce the clearance so it's more on line with the others.
I've sold all my spare black shells but a member here might have a pair they are willing to part with - worth a try.
--- End quote ---
Got around to measuring with my brown shells, it goes down to around 0.025mm, so I'll just replace that green with a brown. That means it will be BBGBB, but could I get away with BBBBB? I'll measure again trying a brown in the middle main.
McCabe-Thiele (Ted):
BBGBB looks as though they will all be a similar clearance - I would probably worry unnecessarily if I left them at BBBBB.
Your choice at the end of the day, only you will know one main journal has more clearance.
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