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the carbs are from an 81 xs 11 MNS they have drain screws and not a drain bolt. i dont know what jet size to use. it looks like the jets say 92.5 the bike has a 4 into 1 ....am wondering what the stock main jet size is? thx.
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Steven
1981 XS 1100 LH
1979 XS 1100 SF -
Not positive but I can say for sure it is at least 110.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 -
im pretty sure 80 has 110 mains but the 81 carb is slightly different. i thought maybe 137.5 but maybe those are earlier. ? very confused when i read 92.5 off the old mains. I put 125's in cuz it was what i had. but if it takes 137.5 plus 2.5 for the 4 into 1 then i might need to find some 140's ???
Steven
1981 XS 1100 LH
1979 XS 1100 SFComment
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137.5 is the 78-79 carbs, the later carbs, like yours, have the smaller jet size because the pilots are no longer fed through the main jet tower. Your jets will be somewhere in the 110 or 115 stock, I just dont know for sure cause I do not have a manual in front of me. 125 will be pretty rich.Originally posted by GALLAECUS View Postim pretty sure 80 has 110 mains but the 81 carb is slightly different. i thought maybe 137.5 but maybe those are earlier. ? very confused when i read 92.5 off the old mains. I put 125's in cuz it was what i had. but if it takes 137.5 plus 2.5 for the 4 into 1 then i might need to find some 140's ???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 RooseveltComment
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"If A equals success, then the formula is: A = X + Y + Z. X is work. Y is play. Z is keep your mouth shut." - Albert Einstein
"Illegitimi non carborundum"-Joseph W. "Vinegar Joe" Stilwell
1980 LG
1981 LHComment
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110's ARE stock for the 81Special. Midnites are the same.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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