Print Page - Cylinder base studs

Title: Cylinder base studs
Post by: chrisx1 on 29 Mar, 2024, 15:56

What thread size are the Nuts that hold the cylinder barrel down on an A65.
1968 A65L

Im thinking 5/16 24 UNF but would like verification.

I want to clean the stud threads up before reassembly.

Title: Re: Cylinder base studs
Post by: Allan G on 30 Mar, 2024, 09:22

There shouldn't be an UNF/Unc threads on a 68, it will be cycle threads for the nuts and BSF into the crank case. I wouldn't remove them unless you need to.

Title: Re: Cylinder base studs
Post by: chrisx1 on 30 Mar, 2024, 17:49

I don't want to remove them I want to clean the threads in situ.
Any one know what cycle thread size they are?

Title: Re: Cylinder base studs
Post by: Allan G on 31 Mar, 2024, 21:08

5/16

BSA Owners' Club Workshop Discussions

The BSA Workshop => Twins => Topic started by: chrisx1 on 29 Mar, 2024, 15:56