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Crankcase breather size

Posted: 24 Jul 2018 09:11
by mbmm350s
I seem to have an original crankcase breather that is made of fossilised amber and rock hard. Is it 19mm i.d? as the crankcase spigot measures 18.4mm?
cheers
Mark

Re: Crankcase breather size

Posted: 25 Jul 2018 04:59
by 3potjohn
No help I am afraid as I replaced mine some years ago with some tubing I had kicking about. What I do know however is getting the labyrinth in was a bit of a pig even with swarfega on it.Perhaps KY jelly would have been better.

Re: Crankcase breather size

Posted: 25 Jul 2018 07:02
by Ming
I changed mine a year ago and have some left over knocking about (somewhere), which I can't find! I can give you the outside OD though - 24mm, neoprene tube, held on with a pipe-clip, the baffles fitted snugly as I recall.

Re: Crankcase breather size

Posted: 25 Jul 2018 07:22
by 72degrees
I used 19mm ID braided PVC tube on the 'FE'. Possibly not totally suitable as 'food' grade, so perhaps not petrol/oil resistant, but no problems as yet. Softening the tube in hot water assisted with insertion of the labyrinth.