guzziriders.org - moto guzzi forum Homepage
Forum Home Forum Home > Modifications and Restorations > Restorations
  New Posts New Posts RSS Feed - SP 1000 to cafe project, breather hose issues
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

SP 1000 to cafe project, breather hose issues

 Post Reply Post Reply
Author
Message
perdix View Drop Down
Falcone
Falcone


Joined: 09 Feb 2020
Location: chichester
Status: Offline
Points: 32
Post Options Post Options   Thanks (0) Thanks(0)   Quote perdix Quote  Post ReplyReply Direct Link To This Post Topic: SP 1000 to cafe project, breather hose issues
    Posted: 19 Mar 2020 at 19:13
For better or worse changing my old air filter for oval double ended K&N but leaves me with 2 crank case and 2 cylinder breather hoses.
Has any one out there employed some tidy clever method to bundle these still fully functional or is it just a case of extending them out to a drip tube like modern bikes from the belly area.
Thanks in advance.
Incidentally contacted Old tractor bloke about wiring issues .What a helpful and knowledgeable man he is .If he's making looms as well ,brilliant, well worth a look!
Back to Top
ranton_rambler View Drop Down
Senior Member
Senior Member
Avatar

Joined: 13 Feb 2015
Location: Stafford
Status: Offline
Points: 743
Post Options Post Options   Thanks (0) Thanks(0)   Quote ranton_rambler Quote  Post ReplyReply Direct Link To This Post Posted: 19 Mar 2020 at 19:26
Fitting a Le Mans breather box is the usual method.
When I did mine I swapped the rocker covers over to get better runs for the hoses.
Back to Top
Barry View Drop Down
Senior Member
Senior Member
Avatar

Joined: 02 Mar 2015
Location: Oxford
Status: Offline
Points: 2428
Post Options Post Options   Thanks (0) Thanks(0)   Quote Barry Quote  Post ReplyReply Direct Link To This Post Posted: 19 Mar 2020 at 21:07
Originally posted by ranton_rambler ranton_rambler wrote:

Fitting a Le Mans breather box is the usual method.
When I did mine I swapped the rocker covers over to get better runs for the hoses.


totally what he said. this *is* the solution for the question you pose.
Back to Top
perdix View Drop Down
Falcone
Falcone


Joined: 09 Feb 2020
Location: chichester
Status: Offline
Points: 32
Post Options Post Options   Thanks (0) Thanks(0)   Quote perdix Quote  Post ReplyReply Direct Link To This Post Posted: 19 Mar 2020 at 22:04
Ok so looking at pictures of said breather, which looks quite square, I'm thinking adapt the breather box from SP which is flat and could probably fix under cross bar of frame.It would prevent risk of oil drips on tyre and contain any drips on engine.I need to have a look at size of le mans box. Either way seems better than dangling pipes so thanks.
Back to Top
perdix View Drop Down
Falcone
Falcone


Joined: 09 Feb 2020
Location: chichester
Status: Offline
Points: 32
Post Options Post Options   Thanks (0) Thanks(0)   Quote perdix Quote  Post ReplyReply Direct Link To This Post Posted: 19 Mar 2020 at 22:09
So it looks like I had non standard breather as shown which may be a le mans one! I'll use it.
Image result for sp1000 breather box
Back to Top
Barry View Drop Down
Senior Member
Senior Member
Avatar

Joined: 02 Mar 2015
Location: Oxford
Status: Offline
Points: 2428
Post Options Post Options   Thanks (0) Thanks(0)   Quote Barry Quote  Post ReplyReply Direct Link To This Post Posted: 19 Mar 2020 at 22:27
Drips on tyre or on engine are not an issue with the afore-mentioned 'Le Mans breather' if you route the outlets thoughtfully.

You asked for advice - many on here, running the same machines, have gone that route and have practical, working experience to offer.
Back to Top
perdix View Drop Down
Falcone
Falcone


Joined: 09 Feb 2020
Location: chichester
Status: Offline
Points: 32
Post Options Post Options   Thanks (0) Thanks(0)   Quote perdix Quote  Post ReplyReply Direct Link To This Post Posted: 20 Mar 2020 at 07:48
Hmmm thanks for that Barry
Back to Top
Ken-Guzzibear View Drop Down
Moderator Group
Moderator Group
Avatar

Joined: 13 May 2014
Location: Sileby Leics
Status: Offline
Points: 5976
Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken-Guzzibear Quote  Post ReplyReply Direct Link To This Post Posted: 20 Mar 2020 at 11:28
That is not a le mans breather buddy looks like a small block one , look on Gutsibits for one you will need to disable the "flapper valve"inside the said le mans breather and while you are at it pop a new "Top Hat" ball valve into the big engine breather, then a short big hose to the breather box, the 2 smaller pipes on the breather take the rocker cover breathers ..... Then you have to route the other pipe from the breather box up and out the back like old brit bikes as a Vee twin does breath heavy the advantage of the oem one means the breather went into the bigger air box so any out put went back into the engine, Norton did the same thing on the Commando, however once stopped the airbox drained from the bottom then a few oil spots under it ...Hope this helps
The Older i Get, The Better I Was
Back to Top
perdix View Drop Down
Falcone
Falcone


Joined: 09 Feb 2020
Location: chichester
Status: Offline
Points: 32
Post Options Post Options   Thanks (0) Thanks(0)   Quote perdix Quote  Post ReplyReply Direct Link To This Post Posted: 20 Mar 2020 at 14:21
Gutsibits tell me this is a 1000sp breather so as it seems logical to use it rather than a bunch of hoses unless there is a reason to use a Le Mans one?
Back to Top
Barry View Drop Down
Senior Member
Senior Member
Avatar

Joined: 02 Mar 2015
Location: Oxford
Status: Offline
Points: 2428
Post Options Post Options   Thanks (0) Thanks(0)   Quote Barry Quote  Post ReplyReply Direct Link To This Post Posted: 20 Mar 2020 at 14:30
No idea what your photo shows but it is not the 'Le mans breather box' which was recommended to you in response your original question, and which is the solution most commonly employed on tonti-framed Guzzis when ditching the original airbox in favour of (for example) K&N's.

This is the recommended item, as stocked by Gutsibits:https://www.gutsibits.co.uk/pr/TheShop/index.php?q=ENA14700&f=d&Model=0&search=SEARCH

As described in the Gutsibits item description, you will also need a few hoses to connect this chap to the engine and to an outlet source. You *may* also need the 'top hat' breather valve (as described by Ken, above) and as listed by Gutsibits, here: https://www.gutsibits.co.uk/pr/TheShop/index.php?q=ENA28560&f=d&Model=0&search=SEARCH

There are some tried and tested 'tricks', relating to fitting of this 'breather box' - learned from experience, that the members of this forum can share with you if you choose to go ahead with the fitment of the item recommended to you, and in response to your original posted question.

There is no a 'dedicated' 1000SP version of the 'Le Mans Breather Box', although some alternative versions have been made and were available in the past. I own and ride a 1000SP with just this conversion in place, and using the parts recommended to you.

Edit: a quick look at the parts manuals suggests that the photo you posted might show a part of the standard airbox breather system, as fitted to the 1000SP originally (but just *one* of the parts) and which would have to be ditched if you go the K&N route, as you suggested you were. Others may be able to confirm - but see image that follows (Guzzi part number: 17155751) . Hope this helps.






Edited by Barry - 20 Mar 2020 at 14:41
Back to Top
ranton_rambler View Drop Down
Senior Member
Senior Member
Avatar

Joined: 13 Feb 2015
Location: Stafford
Status: Offline
Points: 743
Post Options Post Options   Thanks (0) Thanks(0)   Quote ranton_rambler Quote  Post ReplyReply Direct Link To This Post Posted: 20 Mar 2020 at 17:33
Your photo shows the standard breather from a SP, same or v. similar to small blocks. The breather boxes separate some of the oil from the crankcase gasses and return it to the sump. The Le Mans type is open-vented and has no connection with the intake, whereas the SP type returns the cleaned gas to the intake. Hence the big hole down the middle.
Someone I know just has an open pipe on the crankcase hose and blocks up the oil return. You can block up the head vents - the loops don't have them, but presumably were added as an improvement.
But the Le Mans breather is the proven method that countless people use.
You could keep the old filter setup. It is a right pain to change, but works well and doesn't need doing very often.
Back to Top
 Post Reply Post Reply
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 12.03
Copyright ©2001-2019 Web Wiz Ltd.

This page was generated in 0.109 seconds.