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soldave

Breather hose - what size?

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Does anyone know off-hand what size the inside diameter of the breather hose is that goes from the crankcase to the airbox?  Thinking about going without the airbox but would need a filter for that hose to go into.  18mm and 20mm spring to mind, but I can't remember which one it is.

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Ha, i just did this very job on my car yesterday :turned:

 

Used a breather with 15mm ID adaptor and a short bit of 15mm OD metal pipe to join it to the hose from the crankcase.

 

Breather is a cheapo one off E-bay, works fine.

 

bkE5EVKl.jpg

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Thanks for that.  What did you do about the hose/pipe that usually goes from the rocker cover back to the airbox (the thin one)?

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My engine already had a breather on the upper cam cover (the top of it can just be seen in the bottom of the pic), so it now has two accessory breathers, one on the crank case and one on the cam cover.

 

 

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