# Is this a LM Breather?

**URL:** https://forum.motoguzziclub.co.uk/t/is-this-a-lm-breather/646
**Category:** Big Block Tonti and Loop Frame models
**Created:** [7 June 2013 18:58 UTC](https://forum.motoguzziclub.co.uk/t/is-this-a-lm-breather/646 "2013-06-07T18:58:17Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![jmee54](https://forum.motoguzziclub.co.uk/letter_avatar_proxy/v4/letter/j/f9ae1b/32.png) [@jmee54](https://forum.motoguzziclub.co.uk/u/jmee54)
#### Post date: [7 June 2013 18:58 UTC](https://forum.motoguzziclub.co.uk/t/is-this-a-lm-breather/646/1 "2013-06-07T18:58:17Z")

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I have found this in amongst my stash of spares. Is it a Le Mans breather ? Now I’ve read about the flap thingy but haven’t really got a clue! Looking down the largest orifice there is some sort of something, is this it? If indeed this is the aforesaid breather!

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### Author: ![Exmembers](https://forum.motoguzziclub.co.uk/letter_avatar_proxy/v4/letter/e/ce73a5/32.png) [@Exmembers](https://forum.motoguzziclub.co.uk/u/Exmembers)
#### Post date: [7 June 2013 19:18 UTC](https://forum.motoguzziclub.co.uk/t/is-this-a-lm-breather/646/2 "2013-06-07T19:18:07Z")

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Looks like that to me.

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### Author: ![jmee54](https://forum.motoguzziclub.co.uk/letter_avatar_proxy/v4/letter/j/f9ae1b/32.png) [@jmee54](https://forum.motoguzziclub.co.uk/u/jmee54)
#### Post date: [7 June 2013 19:35 UTC](https://forum.motoguzziclub.co.uk/t/is-this-a-lm-breather/646/3 "2013-06-07T19:35:38Z")

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Just found a post in the search section after I found a way to look for Le Mans without using Le!Tells me most of what I want to know except if the thing down the hole is wanted or not.

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### Author: ![Mike\_H](https://forum.motoguzziclub.co.uk/user_avatar/forum.motoguzziclub.co.uk/mike_h/32/93_2.png) [@Mike\_H](https://forum.motoguzziclub.co.uk/u/Mike_H)
#### Post date: [7 June 2013 20:37 UTC](https://forum.motoguzziclub.co.uk/t/is-this-a-lm-breather/646/4 "2013-06-07T20:37:35Z")

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It’s basically a large washer with a coil spring above it. I have got a new box to put on, only 'cause old one is thick with rust, but which will brush up with a coat of Hammerite, but still I have been using that with its stock valve plus a ball valve since 1987 with no probs whatsoever, so I’m leaving it that way. What I have noticed is the spring gets weaker with age, so makes it a bit easier to open. Where ‘flap’ valve came from I don’t know, stuck for describing it any other way I suppose!

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### Author: ![jmee54](https://forum.motoguzziclub.co.uk/letter_avatar_proxy/v4/letter/j/f9ae1b/32.png) [@jmee54](https://forum.motoguzziclub.co.uk/u/jmee54)
#### Post date: [7 June 2013 20:47 UTC](https://forum.motoguzziclub.co.uk/t/is-this-a-lm-breather/646/5 "2013-06-07T20:47:24Z")

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So does this look like it should? Can I test it somehow?