BSA Owners' Club Workshop Discussions

The BSA Workshop => Singles => Topic started by: Greenfield on 03 May, 2023, 17:25

Title: Screws i B33 cylinder head
Post by: Greenfield on 03 May, 2023, 17:25
Hi all
A quick question:- What are the two screws for in a B33 cylinder head near side? I'm guessing something to do with the oil supply to the rockers.
Title: Re: Screws i B33 cylinder head
Post by: Bess on 03 May, 2023, 18:36
Hi,
     They are the drill access for the oilways during manufacture, threaded and plugged with screws. It would be good to remove the screws and clean the oilways, but I have never managed to remove them. I thoroughly flush instead.

Best wishes...
Title: Re: Screws i B33 cylinder head
Post by: Greenfield on 03 May, 2023, 18:53
Thanks Bess
It looks as though somebody had a go at getting them out in the past. There's no oil leaking through them so they can stay, at least for the moment. As long as the supply and drain oil ways are clear there shouldn't be a problem.
Cheers