BSA Owners' Club Workshop Discussions

The BSA Workshop => Singles => Topic started by: V500 on 16 Apr, 2024, 15:50

Title: ZB32 anti-drain down valve.
Post by: V500 on 16 Apr, 2024, 15:50
Anyone know the diameter of the ball in the anti-drain valve in the timing cover?
Drags has it as either 3/16 or 1/4 depending on the page. I'd say it was 1/4 but confirmation would be nice.
Thanks.
Title: Re: ZB32 anti-drain down valve.
Post by: Derek996 on 16 Apr, 2024, 18:59
Sorry, I'd have to take mine to bits to find out but from memory I'm sure it's ΒΌ".
Title: Re: ZB32 anti-drain down valve.
Post by: V500 on 16 Apr, 2024, 22:32
Thanks. I'm almost sure the 3/16 would disappear through the hole in the seating.