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While runnen a y junction in my fuel lines from the petcocks...left petcock feeding rt carbs.......right petcock feeding left. carbs.......what position do you run the petcocks in....on......prime...or does it matter? Stock 81 h model. No snork. 
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Last edited by brcree; 06-25-2010, 02:37 PM.At this time:
1985 Goldwing Innr.
1976 cb 750 cafe racer
2007 vtx 1300
81 sx 1100 s h
81 sx 400 special -
I'm a little confused, if your running a Y then aren't both petcocks feeding both sets of carbs?
Regardless you should run the petcocks in the proper position for what your doing, so run when your driving, prime when you need gas without the motor running, and Reserve after you run out in the "run" position.1979 xs1100 Special -
Stock air box/K&N Filter, MAC 4-2 exhaust, Bad-Boy Air horn, TC fuse box, Windshield, Soft bags, Vetter Fairing, Blinkers->Run/Turn/Brake Lights, Headlight Modulator, hard wire GPS power
Short Stack - 1981 xs1100 Standard - lowered for SWMBO.
My Bike:Originally posted by fredintoon
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81h.........on. Prime flows all the time, Reserve picks up fuel lower in the tank when you forget to fuel-up. Cris-crossing lines is just fine and NEEDS to be done if running inline filters plus with the longer lines un-cris-cross them, turn tank around and set where seat goes for tunin and syncing carbs. Never understood why the Specials didn't use vacuum petcocks like the Standards.........guess the same reason for the screwy front brake set-up on the Specials......just cause they can, go figure.81H Venturer1100 "The Bentley" (on steroids) 97 Yamaha YZ250(age reducer) 92 Honda ST1100 "Twisty"(touring rocket) Age is relative to the number of seconds counted 'airing' out an 85ft. table-top.Comment
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While it may seem more useful for some to crisscross to add an inline filter, I never could make it work. I just run the line from the left petcock down between carbs 1 & 2 and put an inline filter on it and right to the 1 & 2 carb fuel T, same with the other side. Works great.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 XS750Comment
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Quick
Thanks for the info guys....will work on it today. No. 1&2 spark plugs weren't getting any gas or not much. Could be the floats maybe.......At this time:
1985 Goldwing Innr.
1976 cb 750 cafe racer
2007 vtx 1300
81 sx 1100 s h
81 sx 400 specialComment
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Most likely a kinked fuel line, or an air pocket. This was the reason I quit trying to do the corssover, I would ALWAYS end up with a kinked line and or an air pocket. Don't get me wrong, either can happen with my routing as well. Just ALOT less likely in my experience.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 XS750Comment
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Quick
IT'S ALIVE!!!!!!!!!! All cyl poppen now boys!!!!!!! Thanks guys!!!!!!!!!
At this time:
1985 Goldwing Innr.
1976 cb 750 cafe racer
2007 vtx 1300
81 sx 1100 s h
81 sx 400 specialComment
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On my LG I run a hose from right petcock to the left petcock. In this line I have two 'T's. Hose goes from each 'T' to the carbs below.
This way all four carbs run from either or both petcocks (runs fine on just one petcock). This also allows me to reach down to switch to reserve with left hand. When convienient I then switch the right side.Pat Kelly
<p-lkelly@sbcglobal.net>
1978 XS1100E (The Force)
1980 XS1100LG (The Dark Side)
2007 Dodge Ram 2500 quad-cab long-bed (Wifes ride)
1999 Suburban (The Ship)
1994 Dodge Spirit (Son #1)
1968 F100 (Valentine)
"No one is totally useless. They can always be used as a bad example"Comment
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quick
Hay Pat, now there ya go man......was wondering how to find Y fittings, I confused some by saying I was runnen Y's in the lines, sorry reefer.....I was just using one line, sorry. Two T's ya say between the petcocks and then down to the carbs.......hummmmmmm that will work!
Last edited by brcree; 06-26-2010, 12:48 PM.At this time:
1985 Goldwing Innr.
1976 cb 750 cafe racer
2007 vtx 1300
81 sx 1100 s h
81 sx 400 specialComment
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I like that Idea!Originally posted by Pat Kelly View PostNathan
KD9ARL
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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 RooseveltComment
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