sdr51
New Member
Posts: 31
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Post by sdr51 on Mar 1, 2024 8:03:05 GMT
Could anyone help with details of the main bearings on a 1937 500cc JAP engine,on taking my crankcases apart there were no rollers on mains,it has the outer races in cases.The timing side shaft seems to be 3/4” and drive side 7/8”, thanks David Roper
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Post by cottonjo on Mar 1, 2024 16:46:50 GMT
We think the timing side on that model has a bronze bush and the drive side is loose rollers. Ewan Cameron from Malvern is the expert. He may also have the appropriate parts.
Good luck
Paul S
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sdr51
New Member
Posts: 31
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Post by sdr51 on Mar 1, 2024 20:59:51 GMT
Thanks Paul, I’ll give them a try
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