[Ducati] Carb Setting Info, 95, 900SP

[ducati5555 at aol.com]

thanks Jim

good info, will take a look over the weekend.

Mike


-----Original Message-----
From: Jim Calandro <capo at carolina.rr.com>
To: Ducati Owners Group <ducati at ducati.net>
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: <Ducati5555 at aol.com>?
To: <ducati at ducati.net>?
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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