BSA Owners' Club Workshop Discussions

The BSA Workshop => Twins => Topic started by: tdc on 09 Dec, 2025, 15:07

Title: 67 hornet Valve guides.
Post by: tdc on 09 Dec, 2025, 15:07
Removed old valve guides and threw them away . not thinking that I would need them again .as you do ! But now I find that the replacements are too long in the ports and as a result hold the valves off the seats .I understand that there are early and later guides and have those that are recommended .If they have to be turned down perhaps someone can shed some light ...Thank you . R.
Title: Re: 67 hornet Valve guides.
Post by: tdc on 11 Dec, 2025, 13:33
Just as a matter of interest . Apparently it is not uncommon to have to trim the valve guides on an A65. In this case it was somewhat more than a 'trim' made much easer with a lathe .So all good now !   
Title: Re: 67 hornet Valve guides.
Post by: nablats on 17 Dec, 2025, 18:14
thanks for that, I will be doing my guides at some point.