SOHC.co.uk Forums > CB750

Oil tank and breather pipes

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Frank1e:
Cant remember ever seeing that...breather pipes from engine going into an oil tank..usually airbox..would suggest oil tank is pressurized, might be an aid for oil delivery..some sort of flap valve inside tank..its not really a question..just thoughts...

Trigger:
The bottom pipe is a oil feed to the chain oiler.

Frank1e:
Bottom pipe , the one joined to the back of crankcase which is not a breather but a feed for drive chain oiler ?
we think thats a pretty useful thing..if it works  :)

Trigger:

--- Quote from: Frank1e on April 05, 2017, 03:02:53 PM ---Bottom pipe , the one joined to the back of crankcase which is not a breather but a feed for drive chain oiler ?
we think thats a pretty useful thing..if it works  :)

--- End quote ---

Most people block them off, as modern chain lube is a lot better. And a lot less mess ;)

Green1:
Nothing wrong with the auto oiler yes its messy but on the plus side I haven't oiled or adjusted the chain in over 4 years and the oil works wonders at keeping rust at bay on the rear wheel  ;) 

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