Is there a good and easy way to eliminate that crazy fuel set up. I just purchased a 80 XS1100SG and mine is missing that set up. I have never seen such a set up before. From Yamaha its 90.00 plus bucks.
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bypassing octopus fuel setup
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Block off the front nipple on the petcocks and then just run the rear nipple to the carbs. Just make sure all the vacuum nipples on the carb boots are covered.Nathan
KD9ARL
μολὼν λαβέ
1978 XS1100E
K&N Filter
#45 pilot Jet, #137.5 Main Jet
OEM Exhaust
ATK Fork Brace
LED Dash lights
Ammeter, Oil Pressure, Oil Temp, and Volt Meters
Green Monster Coils
SS Brake Lines
Vision 550 Auto Tensioner
In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.
Theodore Roosevelt
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As you may know, the purpose of the valve is to stop fuel flwo when the engine is not running. Its an additional safety or a way to keep from having to turn the petcocks on and off each time you get on and off the bike.
If you do a search on fuel line routing I am certain you will find ALOT of ways folks have rerouted the lines to eliminate that beast.Life is what happens while your planning everything else!
When your work speaks for itself, don't interrupt.
81 XS1100 Special - Humpty Dumpty
80 XS1100 Special - Project Resurrection
Previously owned
93 GSX600F
80 XS1100 Special - Ruby
81 XS1100 Special
81 CB750 C
80 CB750 C
78 XS750
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Originally posted by vintagemcyclegu View PostIs there a good and easy way to eliminate that crazy fuel set up. I just purchased a 80 XS1100SG and mine is missing that set up. I have never seen such a set up before. From Yamaha its 90.00 plus bucks.
FWIW, I wouldn't fit one of those 9-hose wonders if it came for free.
Like they said, block off the gas tap front spigots and make sure the carb manifold vacuum tap that worked the octo is capped off like the other 3.
NOT the vacuum tap from the #2 carb body! That one works the ignition advance and needs to be there.
The easiest fuel line run is from left tap to right carb tee & vice-versa.
This gives more room to fit in-line fuel filters if you want to.
You will have to open both taps to run the bike this way but T-ing in a cross tube to allow one tap to feed all 4 carbs adds complication.
And remember to turn the taps off when you park, just like grandpa did on his Norton.Fred Hill, S'toon
XS11SG with Spirit of America sidecar
"The Flying Pumpkin"
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Octy
Originally posted by vintagemcyclegu View PostIs there a good and easy way to eliminate that crazy fuel set up. I just purchased a 80 XS1100SG and mine is missing that set up. I have never seen such a set up before. From Yamaha its 90.00 plus bucks.1979 XS1100 Special (Mad Max, OEM) Current
1980 XS1100 Special
1990 V Max
1982 KZ750 LTD Twin
1986 700 FZR Yamaha Fazer (faster then expected)
1979 XS750 Special (my 1st Special)
1974 CB750-Four
Past/pres Car's
1961 Catalina 389/1970 Torino GT 351/1967GTO 12to1 comp./ Roller cam/ T-10/ 456 gear/Tri-power/1967 GTO 400, 1969 Camaro, 1968 Z28, 2001 BMW M Roadster 0 to 60 in 4.5 sec. Jaguar XK8
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Originally posted by XS1100_OEM4ME View PostOnce again I am hearing from some the multi billion dollar Co. Yamaha, didn't know what they were doing
of course they knew what they were doing but their motivation was different.
They wanted to not be sued by people too stupid to turn their gas off when they parked.
Current owners want their fuel run to follow the KISS principle and have 2 hoses instead of 8 hoses, 2 tees and a vacuum line.
And if you are too stupid to turn your gas off you shouldn't be riding.Fred Hill, S'toon
XS11SG with Spirit of America sidecar
"The Flying Pumpkin"
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Hey OEM,
I get you are stuck on stock, stock, stock. And in general I agree, the bike runs like a raped ape with the air box and the stock exhaust so I see no need to change that myself. But I do love the results of the 750/850 swap, the upgrade fuse box, and yes....removing the Octy.
I have owned two XS11 Specials now. and on both I tried to have it setup with the Octy. Both came with one in place. First one only ran with petcocks in Prime, and trying to fix it and keep fuel from leaking was a difficulty at best. So I dumped it.
Second one, I rebuilt it with the petcocks, put it in place, then tried to turn my tank around and just run prime to synch and tune. Fuel poured out the unconnected lines all over the place. Drove me nuts, so it was sent out to a member who likes them.
If you like it and want it, then run it. Same for any other member who likes it. But no need to disrespect those who do not, or act like they are fools or idiots. They just do not share your opinion on a subject that is very opinion oriented.Life is what happens while your planning everything else!
When your work speaks for itself, don't interrupt.
81 XS1100 Special - Humpty Dumpty
80 XS1100 Special - Project Resurrection
Previously owned
93 GSX600F
80 XS1100 Special - Ruby
81 XS1100 Special
81 CB750 C
80 CB750 C
78 XS750
Comment
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Originally posted by DGXSER View PostHey OEM,
I get you are stuck on stock, stock, stock. And in general I agree, the bike runs like a raped ape with the air box and the stock exhaust so I see no need to change that myself. But I do love the results of the 750/850 swap, the upgrade fuse box, and yes....removing the Octy.
I have owned two XS11 Specials now. and on both I tried to have it setup with the Octy. Both came with one in place. First one only ran with petcocks in Prime, and trying to fix it and keep fuel from leaking was a difficulty at best. So I dumped it.
Second one, I rebuilt it with the petcocks, put it in place, then tried to turn my tank around and just run prime to synch and tune. Fuel poured out the unconnected lines all over the place. Drove me nuts, so it was sent out to a member who likes them.
If you like it and want it, then run it. Same for any other member who likes it. But no need to disrespect those who do not, or act like they are fools or idiots. They just do not share your opinion on a subject that is very opinion oriented.
It is your bike, do as you see fit, and yes, I am one of those "dumb" riders that forgot to turn off the petcock a time or two on bikes without the octy, maybe it is because I am one of the stupid ones that have done that, that makes me like the safty valve so much, a true "sorry" from a fellow XS lover that has been saved by a device that I champion when I can, please don't take my vigor as an insult to all who feel otherwise1979 XS1100 Special (Mad Max, OEM) Current
1980 XS1100 Special
1990 V Max
1982 KZ750 LTD Twin
1986 700 FZR Yamaha Fazer (faster then expected)
1979 XS750 Special (my 1st Special)
1974 CB750-Four
Past/pres Car's
1961 Catalina 389/1970 Torino GT 351/1967GTO 12to1 comp./ Roller cam/ T-10/ 456 gear/Tri-power/1967 GTO 400, 1969 Camaro, 1968 Z28, 2001 BMW M Roadster 0 to 60 in 4.5 sec. Jaguar XK8
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My 79 set outside and suffered the weather. It's destined to be a bobber when finished but I'm keeping the stock tank. I'm welding in two 90 degree barbs to tie the tanks together so only 1 petcock needed.
I grew up on dirt bikes so shutting the gas off is second nature to me.
This forum is great. I printed off a wiring diagram today since my harness was junk.US Army 1986-1991
1979 1100 Special (on the road after 16 years!)
1983 GS300L (wifes ride)
1985 Super Glide
2012 Super Glide
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To the carb fuel inlet. There are 2 #20 on the diagram. One goes to each side of the carb bank.Nathan
KD9ARL
μολὼν λαβέ
1978 XS1100E
K&N Filter
#45 pilot Jet, #137.5 Main Jet
OEM Exhaust
ATK Fork Brace
LED Dash lights
Ammeter, Oil Pressure, Oil Temp, and Volt Meters
Green Monster Coils
SS Brake Lines
Vision 550 Auto Tensioner
In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.
Theodore Roosevelt
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Brian
XS1100 LG "Mr T", SG "ICBM" & FJ1200
Check out the XS Part Number Finder
Be not stingy in what costs nothing as courtesy, counsel and countenance.
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