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Oil foaming

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smellybeard View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote smellybeard Quote  Post ReplyReply Direct Link To This Post Posted: 18 Jan 2019 at 15:23
Oh my rusty balls!

Ball valve rusted and stuck.
It is an obvious water trap. Anyway, fixed now and I'll  tidy up the external breather hose so there's less likelihood of it filling up with water. Given I have the sidecar, I'll run it into a catch tank, racing style. 
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Mike H View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 18 Jan 2019 at 18:24
Originally posted by Chris950s Chris950s wrote:


Not sure what Le Mans model you are referring to Mike?


OK sorry, the pre stock air filters versions, 850 I & II (?) Cos of having no air filter housing, there was a separate standalone metal breather collector box.

As far as I know only that style box had the "flap valve" in it (a washer and coil spring on a rod - but I'm prepared to be corrected).

I only asked because I had a Spada 1, the air filter housing oil collector did not have a"flap valve" or anything like it, there was only the ball valve in the large hose. (Altho there wasn't in mine when I first got it, but that's another story!)




"Chicken nuggets don't dance on a Tuesday."
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Chris950s View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Chris950s Quote  Post ReplyReply Direct Link To This Post Posted: 19 Jan 2019 at 10:32
Mike, I think your Spada may had been converted as the ball valve came later. As far as I am aware all models before and including the Le Mans II back to the first V7s (not just the Le Mans) had the flap valve in the breather box. Only after the Le Mans II was the breather connected to the air box and the ball valve adopted. That is my understanding of what Ian Falloon says in his Moto Guzzi Story, what I have read in Guzziology, and my own bikes and those of my friends. Knowing Guzzi's way of changing models mid production run, it could be anything though!
Chris and Karen - Essex
2011 Stelvio NTX, 1974 950S (750S replica still in bits), 1966 Triumph T100SS 52 years young this year!
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Mike H View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 19 Jan 2019 at 19:41
Not according  to my Haynes manual, and Motomecca agreed with me. The strange object in the Haynes drawing was eventually identified as the ball valve. The Haynes covered 1976 onward T3, California, LM and Convert. Don't remember seeing any other valve in the air filter collector (but was a long time ago), also no obvious signs of tampering.


"Chicken nuggets don't dance on a Tuesday."
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