davecara Posted June 6, 2020 Share Posted June 6, 2020 As we know, when sussing out what bearing shells you need when building an oil boiler you cross ref the letters etched on the crank web with the letters on the back of the top case half. Now if someone really daft had two sets of B12 cases and wasn’t sure if the bottom half was native to the top half is there any markings on the bottom half to match it to the top? pics because, well who doesn’t like pics! Quote Link to comment
Ben Slabby Posted June 6, 2020 Share Posted June 6, 2020 I don't believe there are Dave. You'd have to scrutinise the cases and see if there are differences in paint shades, scratches from tools or other marks that match the two together. Quote Link to comment
no class Posted June 6, 2020 Share Posted June 6, 2020 (edited) they are line bored . assemble the cases dry and use a dial bore gauge to check the holes . Edited June 6, 2020 by no class Quote Link to comment
davecara Posted June 7, 2020 Author Share Posted June 7, 2020 22 hours ago, no class said: they are line bored . assemble the cases dry and use a dial bore gauge to check the holes . Well that’s crap. I knew the gsxr were lone bored, I didn’t think they bothered with the b12. anyone got a dial bore gauge to lend me? Quote Link to comment
Gixer1460 Posted June 7, 2020 Share Posted June 7, 2020 Anything with shell bearings will be line bored to form a matched set otherwise just a couple of thou mismatch will bind up the crank! Quote Link to comment
Brians 7/12 Posted June 8, 2020 Share Posted June 8, 2020 Was wondering what these were !! Quote Link to comment
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