The New And Improved Unofficial R65 Forum V2
Technical Discussion => BMW Technical Q&A, Primarily R65 => Topic started by: RSMike on July 15, 2011, 10:26:42 AM
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I'm about to renew fuel hose from the tee connector over to the RHS carb, using outside cotton braided hose to replace existing.
Looks like I might be able to slide out the old section and slide in a new one without removing anything, or am I dreaming?
also thinking about replacing the tee piece with a brass y piece to ease the angles for my inline filter, thoughts on this brainwave?
Mike
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I ran a wire through the new hose and simply guided the hose across to the mouse hole exit. Ta da!
The "Y" ought to work fine. I've seen a couple fuel hoses severely pinched off due to too tight a bend. Go for it.
Monte
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I stayed with the T in the end, The Y did ease the angles but its also brought the filter down to rest on the top of the Carb.
I bought extra hose so I could play around and try different lengths between the connection points, I think I have now managed to get the shortest runs, with nothing touching other parts, and no kinking.
I think a 3 o'clock tap is really the way to go on this, I assume they fit the earlier models ok?
(https://bmwr65.org/smf/proxy.php?request=http%3A%2F%2Fi719.photobucket.com%2Falbums%2Fww198%2Fmiketruss1%2FIMG_1839.jpg&hash=e21734999fc377d42a1b11146498df0ad1755178)
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Hi there:
quick question: is your tank outlet on the right side of the bike? mine is on the left side... I didn´t know it could change... that´s important!!
Regards,
fdo.
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Some R65s came with the 90° petcock, and some came with the straight - so it is your preference, really.
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Hi there:
quick question: is your tank outlet on the right side of the bike? mine is on the left side... I didn´t know it could change... that´s important!!
Regards,
fdo.
Hi fdo, no my tank outlet is on the left also, I am just thinking of changing the tap to the type R65 Mark has in this pic, much better for the inline filter set up
(https://bmwr65.org/smf/proxy.php?request=http%3A%2F%2Fwww.bmwr65.org%2Fhtdocs%2Fyabbfiles%2FAttachments%2Fr65_filter_001.jpg&hash=c993306745ec659f4da2dfc0e8e92951c2de0ffa)
more here:
http://www.bmwr65.org/cgi-bin/yabb2/YaBB.pl?num=1305710610
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OK, now I get it, I was somehow watching the picture the other way... I can see you mean the filter being vertically should be better... that makes sense... although mine ins horizontal and I never had a problem with it...
Good luck!!
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OK, so it was getting late last night as I finished up my little job so I postponed the "flow test" until this morning.
Turned on fuel, checked all left hand connections, everything looks fine, around to the right looks good to except I forgot a cable tie, then I hear drip drip drip under the bike, CRAP, fuel pouring out of LH carb bowl.
fuel off, dropped the bowl, all looks OK and clean, fuel on, checked the float needle, seems OK too, let some fuel flush, fuel off, bowl back on, fuel on, all looks OK again, no leaks
As I was carving up the fuel hose yesterday evening, I remember thinking at one point, I must watch it that none of those little cotton bits on the braiding drop into the hose pieces, I wonder...., or maybe I do have a sticky float needle
Drive test later, but first my 05 X-Trail is due her bi-yearly mandatory test, fingers crossed that goes well at least
OK, now I get it, I was somehow watching the picture the other way... I can see you mean the filter being vertically should be better... that makes sense... although mine ins horizontal and I never had a problem with it...
Good luck!!
Yes, mine works good too, horizontal is fine, its just that the angles the bits of joining hoses have to go through can be a bit tight and there is a danger of kinking, and I think the side exit from the tap just makes the filter placement looks a lot neater, not hanging over the Carb top and blocking the view of the timing hole ( rubber bung in casing), like mine does right now.
But as you say, if it works, why worry, :)
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Whenever you take the airbox off next, you can enlarge the hole with a file to make fuel line replacement easier next time .
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Replacing fuel hose. Hmm, I replaced original fuel hose last year. Following a winter, during which the R65 sat unused for about three months and experienced temperatures down to minus 10 C, The first time I came to use it, Aaargh petrol dribbling out everywhere. The BMW look alike, braid covered hoses had become porous. Choose those hoses with care.
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I have been using the Bing blue alcohol resistant polyurethane oine for the past several years and so far it's fantastic! No more rubber bits sticking open the needle valve, etc.
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I recently had a fuel leak on my 79, the crossover hose which goes through the air filter housing split a little just where it comes out on the left to join that Christmas tree of fuel connections. The fuel dribbled down the hose and dripped off the carb that fooled me into thinking of stuck float etc. I replaced the crossover with braided type hose probably Russian made as it was meant for my old Ural twin! It takes a bend better than the original which likes to kink. Montmil is right, to replace the crossover just run a stiff wire through the old one before pulling it out and use the wire to guide the new one. RSMike's arrangement looks very good, I'm going to re-arrange mine like his.
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I have been using the Bing blue alcohol resistant polyurethane oine for the past several years and so far it's fantastic! No more rubber bits sticking open the needle valve, etc.
That's interesting, never heard of this, is this the stuff?:
http://rover.ebay.com/rover/0/e11030.m43.l1123/7?euid=daf7586eb6a24c9188de463e37d49e9b&loc=http%3A%2F%2Fcgi.ebay.com%2Febaymotors%2Fws%2FeBayISAPI.dll%3FViewItem%26item%3D390304614247%26ssPageName%3DADME%3AB%3AEF%3AMOTORS%3A1123
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I have some of this "generic" stuff as well but aircraftspruce.com carries that marketed by Bing. I've been doing a comparo between them and so far I can't tell any difference. Get the 1/4" and no clamps required...
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Thanks, found a UK supplier also for folks this side of the pond:
http://shop1.actinicexpress.co.uk/shops/partsforaircraft/index.php?cat=Fuel_Hose_and_Fittings
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I have some of this "generic" stuff as well but aircraftspruce.com carries that marketed by Bing. I've been doing a comparo between them and so far I can't tell any difference. Get the 1/4" and no clamps required...
Is it difficult to slip on? I don't use hose clamps on the 7 mm black braided line I use.
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No, Ed, "spit and slip"! ;D
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Well, this is an old one!
However, I only today finally got around to fitting the "3 o'clock" tap to my tank. The other main difference with this tap is that the copper gauze filter is larger and fits inside the tank, rather than the little one that sat just below the tap in the old one.
When I was renewing the inline filter I cut open the old one to see how it looked. So it did its job and stooped a lot of little flakes from getting to the carbs, (see attached).
Hi there:
quick question: is your tank outlet on the right side of the bike? mine is on the left side... I didn´t know it could change... that´s important!!
Regards,
fdo.
Hi fdo, no my tank outlet is on the left also, I am just thinking of changing the tap to the type R65 Mark has in this pic, much better for the inline filter set up
(https://bmwr65.org/smf/proxy.php?request=http%3A%2F%2Fwww.bmwr65.org%2Fhtdocs%2Fyabbfiles%2FAttachments%2Fr65_filter_001.jpg&hash=c993306745ec659f4da2dfc0e8e92951c2de0ffa)
more here:
http://www.bmwr65.org/cgi-bin/yabb2/YaBB.pl?num=1305710610
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I use these filters on all of my carbureted bikes .
http://www.itw-fastex-cva.com/images/stories/data-shts/visufilter/8437-00-9909.PDF
I like to be able to see the filter media .
Helped me trouble shoot a carb problem on my '82 LS .
I installed new fuel line in November, what I didn't know, is that it was vacuum line that was mislabeled , it started coming apart and clogging the idle jets !!!!!!!
I saw that the filter had black residue on it, if not for the clear filter, I may have done a lot of work for nothing .