View single post by discogodfather
 Posted: 11-28-2021 01:49 am
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discogodfather



Joined: 09-17-2007
Location: San Francisco, California USA
Posts: 221
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 Thanks to Bruce for getting some great measurements on the "knurl". Looks like these are around .520" (or 31.1mm).

As usual, when I try to locate some aftermarket ones (there are a bunch available in 7/16"-20 from companies like ARP, Moroso, Dorman, etc) there is nothing that comes close to the .520" dimensions. There are a few around .507", and the question does come up: how are the "kurls" really measured technically- is it outside diameter, inside, or some kind of cross between the two?

There are quite a few oversize at about .550". so I could always drill out the hubs a bit and press them. Acceptable sizing for the hole seems to be around .01"-.09" undersized.

There is also a question of moving from 7/16"-20 to something like an M12 thread.

Have to put my thinking hat on for this latest custom job.