Chaincase Breather?

[westburyst]

Do these have any sort of filter in them?

Cheers

Ben

[desi]

Mine does - a disc with a half moon cut out holding what looks like a tuft of fibreglass if that's any help - can't say if that's the norm mind.

[westburyst]

Thanks desi, I think it is normal to have that inside mine has it too.
Can this be taken out and cleaned?

[bristolmod]

the original ones had wire wool inside- these tended to block easily over the years, thus creating pressure in the crank case (= possible blown seals). I've always tended to remove the wire wool in its entirety, thus allowing the crankcase to "breath". No real problems with oil coming out.

Chris

[westburyst]

Chris, how about the possibility of dirt getting in?

Cheers

Ben

[bristolmod]

never thought about that!!

To be honest, the hole is pretty small, and you stand more chance if you run an open mouthed carb IMO.

I use a small twist drill to pull out the wire wool; flush it through with parafin, then replace on crankcase.

Chris