Triumphrat

sjw867 · 12-30-2009, 11:22 PM

Hey Guys, I'm building a '69 T120 chopper. I bought It as a basket case last year. The Dude I got it from had like 12 other Triumphs, So needless to say everything in the boxes were miss matched from parts taken off several bikes over the years, Including the carbs. They are both 930s but after doing some research, I found that they are off 2 different year bikes. I think they were like R94 and L88, or something like that. The jetting in the 2 carbs are suppose to be the same, But I don't know if either has been re jetted over the years. I plan on rebuilding the carbs anyway, and as cheap as the jets are I'll probably throw a new set into each. What I need to know is, what size jets should I go with go with. I'm running stock pipes with no tips, mufflers or baffles. The pipes are bobbed just under the foot pegs. I will be running air filters, not V-stacks. I plan on running "R" lifters and a 20 tooth counter shaft sprocket, But other then that No major motor work done. Also do I need to change the needle jet AND the main jet? Or Just one or the other? Also what other adjustments do I need to make? I've heard people talking a bout different needle settings, But I'm not sure what that's all about.

Thanks Guys Any Input Helps

jim05 · 12-31-2009, 01:18 AM

Quote:

Originally Posted by sjw867

Hey Guys, I'm building a '69 T120 chopper. I bought It as a basket case last year. The Dude I got it from had like 12 other Triumphs, So needless to say everything in the boxes were miss matched from parts taken off several bikes over the years, Including the carbs. They are both 930s but after doing some research, I found that they are off 2 different year bikes. I think they were like R94 and L88, or something like that. The jetting in the 2 carbs are suppose to be the same, But I don't know if either has been re jetted over the years. I plan on rebuilding the carbs anyway, and as cheap as the jets are I'll probably throw a new set into each. What I need to know is, what size jets should I go with go with. I'm running stock pipes with no tips, mufflers or baffles. The pipes are bobbed just under the foot pegs. I will be running air filters, not V-stacks. I plan on running "R" lifters and a 20 tooth counter shaft sprocket, But other then that No major motor work done. Also do I need to change the needle jet AND the main jet? Or Just one or the other? Also what other adjustments do I need to make? I've heard people talking a bout different needle settings, But I'm not sure what that's all about.

Thanks Guys Any Input Helps

i used 195 jets and started with needle in middle notch you half ta run wide open for a wile and read your plugs you want them light broun i moved needle all the way doun an it runs perfect it a 68 650 bonne i went about 11000 miles last summer ran good had valve guide back out dealing with that now ill get her';.[ thought