low power and brake issue

Konneker, Tristan R Tristan.Konneker at qwest.com
Mon Jun 2 13:27:45 PDT 2008


the 130 mains are the problem. I'd try a 150 or so. 

-----Original Message-----
From: Wendell Crain [mailto:wendell_crain at hotmail.com] 
Sent: Monday, June 02, 2008 4:26 PM
To: Suzuki SV650 Mailing List
Subject: RE: low power and brake issue

Sorry, forgot those tidbits this time. It has a M4 full system, stock
carbs, stock airbox, K&N, stock motor. Pretty plain jane really. Biggest
deal was that I bought all the pieces separately and put it together in
about 3 weeks.



> From: afm199 at earthlink.net
> Subject: Re: low power and brake issue
> Date: Mon, 2 Jun 2008 12:27:42 -0700
> To: sv650 at micapeak.com
> 
> pointless to speculate without knowing your exhaust, carbs, 
> airbox/filter and motor
> 
> 
> On Jun 2, 2008, at 11:40 AM, Wendell Crain wrote:
> 
> > Well, I took the "3 week wonder" to the track and something 
> > definitely isn't right. During the second 20 minute session, I ran 
> > out of gas. I know I didn't have the tank all the way full, but this
was excessive.
> > I ended up using about 7 gallons for evening. There was so much fuel

> > going through it, you could smell it in the exhaust. I never even 
> > thought to check that before. The bike had no top end power at all.
> > Going with WOT, I was at least 10 seconds down on a lap time. I know

> > I am slow, but definitely not that slow. We rode the primary bike 
> > for the endurance race on Saturday and going through the pits, I 
> > found someone that loaned me some smaller jets. (Based on another 
> > mechanics advice there, his suggestion was to go to around a DJ130 
> > and remove both shims from the nylon spacer on the needles.) So I 
> > spent Saturday evening swapping over to the smaller mains and trying

> > very hard not to lose any small parts inside my tiny trailer. In 
> > Sunday practices, the bike seemed like it had a bit more, but I was 
> > still down 8-9 seconds and this was going around most corners WOT. I

> > wasn't using quite as much fuel though. While the bike was running 
> > you could still smell unburnt fuel, just not as strong. The mechanic

> > made suggestions on things to try, since I have 2 weeks before the 
> > next round. Since I have DJ mains in it and stock needles, he 
> > recommended buying the DJ needles (or complete kit). I do have 
> > another set of carbs I had purchased, so he recommended setting 
> > those up to see if something is wrong with the first set. (As a 
> > quick easy test without tearing the first set down to find an 
> > issue.) Rebalancing the carbs. Do a compression check. (Anyone know 
> > what kind of number I would look for in central Ohio?) If the 
> > compression numbers don't look good, a leak test would be next. (I 
> > really don't have a clue on how to do that
> > one.)
> >
> > Wendell
> > _________________________________________________________________
> > E-mail for the greater good. Join the i'm Initiative from Microsoft.
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> > GreaterGood
> 

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