Xs breather valve

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I've got my grubby hands on an XS beather valve it looks the biz, perhaps better than my old Guzzi steel ball and I'd like to give it a try. I've tried to find the post on this valve but failed. Can anyone help?

Thanks,
Cash
 
Cash,

You'll like that XS 650 valve. After all, it was designed for a 650cc vertical twin. I've had mine for some time now and I have pretty well eliminated any oil leaks.

I tapped the output and screwed in a 90° barb fitting.

Xs breather valve
 
JimC,
The Yamaha reed behaves much like the Guzzi steel ball in so much as it takes very little pressure to open. The only other reed I've used was a VW unit took about 2psi to open, and it blocked with scum too often.
Thanks,
Cash
 
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