Print Page - Exhaust fixing to cylinder 1934 b250 cc

Title: Exhaust fixing to cylinder 1934 b250 cc
Post by: mike crook@hotmail.com on 12 Dec, 2021, 14:43

Can't find any details on how the exhaust is sealed to the cylinder , am I missing a fined collar?

Thanks

Title: Re: Exhaust fixing to cylinder 1934 b250 cc
Post by: Dean Southall on 13 Dec, 2021, 12:57

I would expect it to be a simple press fit without collar

Title: Re: Exhaust fixing to cylinder 1934 b250 cc
Post by: mike crook@hotmail.com on 14 Dec, 2021, 17:10

Thanks
The exhaust is 1 1/2 ins the port is very slightly larger, no pictures I have viewed show any collar.

I am going to seal it with heat resistant exhaust sealer that hopefully will withstand the vibrations the brackets hold the system very securely.

Thanks again.

Title: Re: Exhaust fixing to cylinder 1934 b250 cc
Post by: Dean Southall on 14 Dec, 2021, 22:05

silicon sealant works well

Title: Re: Exhaust fixing to cylinder 1934 b250 cc
Post by: Greenfield on 15 Dec, 2021, 08:15

Yes, I've always used high temp silicone sealant for the head-pipe joint to good effect.

Title: Re: Exhaust fixing to cylinder 1934 b250 cc
Post by: Steve.S on 17 Dec, 2021, 01:45

I can confirm the B2 exhaust pipe is a push fit in the cylinder head, and is held in place by the clamp further down the pipe. I used Gun Gum to seal it, and it's worked well. If it's very loose, you could make up a spacer sleeve. The B2 didn't have a finned heat sink fitted, but you could fit one to reduce blueing of the chrome, and for appearance.

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The BSA Workshop => Pre War => Topic started by: mike crook@hotmail.com on 12 Dec, 2021, 14:43