SOHC.co.uk Forums > CB500/550
Crank bearings good or bad
Acro1985:
Please can I have some help understanding the clearances.
Just plastigauge my crank with the existing shells in and the reading is 0.050mm or 0.002 inches across them all but I have no idea how I use this information in helping select the right shells. The service manual says if they are in excess of 0.08mm or 0.0031 in they should be replaced which I am assuming mine are within the tolerance
Bryanj:
They are fine for tollerances, you just need to sort out what size the damaged ones were
McCabe-Thiele (Ted):
Your photo is showing the inches scale rather than the mm one - putting that aside the amount of "squash" (Derbyshire techical speak) on the Plasigauge looks pretty good to me.
taysidedragon:
The clearances are within spec, but the crank journal looks ridged and marked. I would take the crank to an engineering firm for their opinion. Probably needs a regrind.
McCabe-Thiele (Ted):
--- Quote from: taysidedragon on August 24, 2024, 04:36:08 PM ---The clearances are within spec, but the crank journal looks ridged and marked. I would take the crank to an engineering firm for their opinion. Probably needs a regrind.
--- End quote ---
Didn't think you could regrind these old Honda cranks?
My 500 crank was badly ridged found a decent replacement from DK.
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