Crankcase breather?

Information relating to the Matchless G80 or AJS Model 18 500cc Heavyweight.
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Reager123
Posts: 4
Joined: Mon Sep 27, 2021 12:53 am
Location: WA. USA

Crankcase breather?

Post by Reager123 »

New owner. Beneath the engine I found a crimped copper line, a few inches long, coming from between crankcase and chaincase. What is this?
Thanks
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clive
Member
Posts: 5657
Joined: Mon Jan 01, 1990 12:00 am
Location: LONDON UK

Re: Crankcase breather?

Post by clive »

crankcase breather. Not sure it should be crimped but so long as it allows air to pass it should be ok.
clive
if it ain't broke don't fix
Reager123
Posts: 4
Joined: Mon Sep 27, 2021 12:53 am
Location: WA. USA

Re: Crankcase breather?

Post by Reager123 »

I’ve opened it up. Might help with some leaks.
Thanks Clive
Trefor
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Posts: 228
Joined: Fri Dec 31, 2010 10:02 am
Location: South Australia AUSTRALIA

Re: Crankcase breather?

Post by Trefor »

I don't think it should be crimped. The crankcase breather on my bike has a rubber type hose attached to drip oil on to the drive chain near the pillion foot rest.
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