Vulcan 800, carb setting for straigt pipes??? - Kawasaki Motorcycle Forums
 
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post #1 of 10 (permalink) Old 04-17-2017, 08:47 AM Thread Starter
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Question Vulcan 800, carb setting for straigt pipes???

Hi all,

So I rebuild my '96 vulcan 800 into a bobber-style.
Tank has been replaced with a Harley sportster tank, intake is the stock housing and filter with the back inlet part taken off, and I made my own straightpipes out of the stock ones with db-killers inside.
It fires up and idles with no problem, but trying to drive is a whole other thing.
between about 1/8 trottle and 3/4 trottle it completely bogs down. You can get going woth a little gas, and pulling full trottle will make it go, but anything in between is nothing.
I pulled of the carb and cleaned it, but there was no dirt or gunk in it to begin with, all jets where clear.
Now I have been messing with the adjustment screw (it was out 5 turns when I took the carb apart) and set it around 2-1/2 for starters and then went to 3-1/2 now but I can't seem to get any improvement.

any suggestions???
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post #2 of 10 (permalink) Old 04-20-2017, 03:35 PM
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What did you rejet with? (jet sizes)

Trying to start a bobber specific forum. If you're interested in it, feel free to PM me!
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post #3 of 10 (permalink) Old 04-20-2017, 04:03 PM
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I'm running straight pipes with a small K&N filter, all EPA equipment deleted, running 165/50 jets

Trying to start a bobber specific forum. If you're interested in it, feel free to PM me!
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post #4 of 10 (permalink) Old 04-21-2017, 07:19 AM
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what needle in the carb? 1/8th throttle to 3/4 throttle is needle
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post #5 of 10 (permalink) Old 04-21-2017, 07:56 AM
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Dynojet needle with one shim on top
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post #6 of 10 (permalink) Old 04-21-2017, 08:41 AM
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dynojet needle for 800 (DNO106)? what e-clip notch u at
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post #7 of 10 (permalink) Old 04-21-2017, 10:46 AM
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Yeah, dno106. From what I remember, it was third from top. It's been a while
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post #8 of 10 (permalink) Old 04-22-2017, 06:28 PM
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Have u put in bigger jets in the carb something to check on

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post #9 of 10 (permalink) Old 04-23-2017, 05:31 PM
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I bought a 99 classic with straight pipes on it I have no idea what they did to the carburetor they put larger jets in there it ran for a little bit now I have major carburetor problems so not really sure what to tell you about what to do if your carb

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post #10 of 10 (permalink) Old 04-23-2017, 10:28 PM
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Hi James, I hope you don't mind me asking this here instead of starting a whole new thread for such a small question.

I'm picking up a used Vulcan 900 soon and I already know I want to change the pipes out to some straight pipes just for better sound. Not really looking for more speed or torque. So my question is; Will I also need to do anything to the carborator or air intake system to keep it running smoothly? I'm assuming I will at least need some more air intake with something like K&M filters, so any and all input here would be appreciated.
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