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Joined
May 12, 2005
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7
Hi Guys,

Just a quick question, what is the thread in the crankcase for the cylinder base studs on a 1970 Commando, ones stripped and needs helicoiling.

Thanks

Ron
 

Ron L

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Joined
Feb 27, 2004
Messages
3,107
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On a '70 model the case to barrel studs are 3/8-16 into the aluminum and 3/8-26 at the nut end. (Except for the stepped stud which is 3/8-16 and 5/16-26). 1972 and later were 3/8-16 X 3/8-24.
 
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