I took the drag bike out tonight the temperature was 57deg and my pipes are glowing red the tips of my spark plugs were ash white I am running 38mm flat slides the main jets are 145s from 140s two weeks ago also installed a set of 80mm long velocity stacks does this ting sound lean
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Last edited by Guest; 09-18-2009, 11:48 PM. -
I'll hazard a guess; you are lean.
My street bike is running 147.5's and gets 35 mpg -
WAYYYYYYYYYYYY lean...If you're running 38's, youre drawing more air, couple that with V-stacks, you need more fuel, bigger jets. I'd venture to guess up in the 150 range...Comment
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What are you running?Comment
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sigpic
mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
#1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
#2 son: 1980 GS1000G
Family Portrait
Siblings and Spouses
Mom's first ride
Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
(Click on my username in the upper-left corner for e-mail info.)Comment
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its a gs1000 bored out with mtc's 13.5.1 with a street port job and yoshi cams seven inch slick 13/42 gearing 37deg timing
antLast edited by Guest; 09-19-2009, 06:10 AM.Comment
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I have three more blocks two more heads three welded cranks ect ect. anyways I talked to a big tune up guy and he told me to go to 150's and get 110 octane with lead to get a proper plug reading or weld a bung in the exhaust for a o2 censer and get a small OBD-2 to dial it right it in. We looked through a scope or a loop and there was no aluminum in the plug so no damage done yet . it ran great last friday until it dropped in to 40s then boy was it lean the track was real slick
spinning well into second gear with a 1.48 sixty foot and still ran 6.70 at 102mph in the 1/8Comment
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I sorta feel your pain. And your bike doesn't even have to be a drag bike to have those problems.
This is my son's '81 850 (totally stock) right after we got it:
.sigpic
mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
#1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
#2 son: 1980 GS1000G
Family Portrait
Siblings and Spouses
Mom's first ride
Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
(Click on my username in the upper-left corner for e-mail info.)Comment
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145 to 155
I swapped jets from 145 to 155 the pipes were not red and a ton more power
until I smoked my second clutch this summer I got a lockup from Paul Gast
but I need a spacer plate for a gs1000 I have to go and have one made we will see what a new clutch will do
antComment
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I love NY
the last three weeks rain rain rain now the racing season is over. time to work on the snowmobilesComment
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