gutless and clueless
Elite HDF Member
Joined: Apr 2008
Posts: 4,718
Likes: 11
From: Back in the Good Ole USA. South Carolina to be exact.
I'm thinkng you should try to establish a baseline closer to stock to start from. Low comp pistons are a possibility. Do a compression check. I'd look at the jets in the carb. The pipes could cause some loss, but I don't think near what you are describing.
Extreme HDF Member
Joined: Nov 2006
Posts: 13,389
Likes: 26
From: Windham,Maine
The worst thing is your dependant on others to work out your problems costing lots of green.Hands on diagnostics is the only way to zero in a problem.You do need baffled exhaust,and someone who knows how to tune a carb.It is an easy task if you take one step at a time.Try the S&S website for carb tuning page that will give you an idea of how the circuits work and how to dial them in.Good Luck
Road Master
Joined: Dec 2007
Posts: 800
Likes: 27
From: In the Pacific Northwest, a few hours east of Seattle.
Another concept would be to find out what was done to the bike by whomever owned it before you bought it. Someone "half installed" the turbo, and its possible that they did other things as well that are causing you issues now. (What the heck is a 'partly installed turbo charger' anyway?)
If you know the guy you bought it from, you may want to call him up and ask him what he had done to the bike - and who did the work.....
Just a thought. Solving problems can be easier when you know which problem it is that you're trying to solve...
If you know the guy you bought it from, you may want to call him up and ask him what he had done to the bike - and who did the work.....
Just a thought. Solving problems can be easier when you know which problem it is that you're trying to solve...
Outstanding HDF Member
Joined: Aug 2008
Posts: 2,951
Likes: 6
From: Kingman, AZ
I agree with others in that you need some back pressure on your exhaust but stock might be overkill the other way making it dump way too much fuel. If it were me I would try modified baffles (tweak restriction up in increments) or buy a milder modified exhaust system used somewhere and try it. The cams may be necessary in the long run but I would bet you could make it ride-able for awhile by changing the air/fuel/back-pressure ratio.
On a Road Star VTwin in a previous life I was able to modify my baffles from pretty much "open" to about 50% open from the aftermarket Dooley's original design and hit a really sweet spot for that bike. In my case it was easier then going back and rejetting the carb several times to match the open pipes.
+1 on trying to find out what previous owner did. The half-arsed turbo thing sounds like he might have been a shade tree tweaker that didn't get it right. Knowing what he did in entirety might help you narrow the focus. Good luck!
On a Road Star VTwin in a previous life I was able to modify my baffles from pretty much "open" to about 50% open from the aftermarket Dooley's original design and hit a really sweet spot for that bike. In my case it was easier then going back and rejetting the carb several times to match the open pipes.
+1 on trying to find out what previous owner did. The half-arsed turbo thing sounds like he might have been a shade tree tweaker that didn't get it right. Knowing what he did in entirety might help you narrow the focus. Good luck!
Outstanding HDF Member
Joined: Mar 2010
Posts: 2,965
Likes: 384
From: SoCal hi desert
Stellar HDF Member
Joined: Feb 2009
Posts: 2,936
Likes: 20
From: Driftless Area
Along with what others have said, wtf is a partial installed turbo??!! Find out what you have and we may be able to help you better. From your description, you're trying to ride a basket case.
Last edited by 1skrewsloose; Jun 20, 2010 at 10:50 PM.
Elite HDF Member
Joined: Jan 2009
Posts: 4,558
Likes: 5
From: Massachusetts
110 KM/H is about 70 MPH. that's unacceptable. Something is definitely wrong wth your bike. The slow jet has nothing to do with it.
Maybe try a mikuni?
Maybe try a mikuni?
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Novice
Joined: Jun 2010
Posts: 19
Likes: 0
ok i got alot of responses and i can tell you this....the mechanic said it was a two thirds installed procharger and im quoting him.......anyways he took it out and then i had the power loss. i cant get a record of this bike because it was sold to a guy at an auction in indiana and then he sold it to me and he had no previous records.....but the good news is i know what a mikuni carb is and have bin doing my homework.......and i built a set of poor man baffles and i will be damned if the bike is a bit quieter as well when gearing down i dont get the loud cracking sound that peirces the ears.....best news of all i politely phoned and talked to the local dealer about the events two days before and the manager of the store said because i kept my cool and didnt phone yelling and the fact that they wanted to get to the bottom of the problem that he asked that i return the bike to the shop and he would figure out the problem with no cost on labour until they solve the problem. he asked only that i drop off the bike and leave it with them for a few days.....now thats great service......and all because i didnt phone them up and start bitching about the big bill and not having the problem fixed. sometimes it pays to be polite.
