[Ducati] Carb Setting Info, 95, 900SP

[stevepatterson at comcast.net]

Have you pulled the spark plugs?  If so how did they look? 

-------------- Original message -------------- 
From: ducati5555 at aol.com 

> 
> thanks Jim 
> 
> good info, will take a look over the weekend. 
> 
> Mike 
> 
> 
> -----Original Message----- 
> From: Jim Calandro 
> To: Ducati Owners Group 
> Sent: Thu, 28 Feb 2008 7:51 am 
> Subject: Re: [Ducati] Carb Setting Info, 95, 900SP 
> 
> 
> 
> Mike? 
> ? 
> If cutting down on air flow, air filter and air box lid, made the situation 
> worse then I would guess you have a rich condition and depriving it of air made 
> it richer. With that logic I would say lowering the needles might help as they 
> will cut back on fuel flow and make it leaner, the direction I think you might 
> like to head. Look at the jet sizes and compare them to stock to see what has 
> been done. I suspect the owner went up a few jets too many.? 
> ? 
> I pulled out the Ducati service manual I bought back in early 94 and it says it 
> should have the following? 
> ? 
> Mikuni? 
> Type BDST 38-B67? 
> Choke 38? 
> Needle Valve jet Y-2? 
> Main Jet 140? 
> Starting Jet 70? 
> Idling Jet 42.5? 
> Needle Jet 5C19? 
> Pos from top 4th? 
> ? 
> I do not think they changed much of this over the years but they could have gone 
> leaner for EPA reasons but this would be a good starting point.? 
> ? 
> Jim? 
> ? 
> Jim Calandro? 
> il Capo? 
> US DESMO? 
> www.usdesmo.com? 
> 704-843-0429? 
> ----- Original Message ----- From: ? 
> To: ? 
> Sent: Thursday, February 28, 2008 9:37 AM? 
> Subject: [Ducati] Carb Setting Info, 95, 900SP? 
> ? 
> > The bike ran ok, except it has a stumble when you crack the throttle. > Full? 
> > throttle it seems to run ok. But just cruising is very annoying. The > bike? 
> > has aftermarket exhaust. When I pulled the tank up I noticed it had no > 
> airbox? 
> > lid or air filter!. So I bought a K and N and found a lid off of Ebay.? 
> > Installed them and the stumble is now even worse. I have no idea what > was 
> done? 
> > to the carbs.? 
> >? 
> > Obviously, the carbs need some work. Is there like a baseline to start? 
> > with, with the mods I have mentioned? Pilot jet, air mixture adjustment, > 
> etc? I? 
> > have adjusted Keihin carbs on my Monster and on all my dirt bikes, but > have? 
> > no experience with Mikunis.? 
> >? 
> > Thanks? 
> > Mike? 
> ? 
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