[MickMaguire]

Would somebody be able to enlighten me as to the stock jetting for a later Trophy or Sprint with Keihin carbs?

 

[djw]

The stock Sprint Keihin CVKs I have have a 38 pilot jet, 125 main jets and unshimmed N3RF needles. I have only uncapped the air screws and set them to 2.5 turns out. I think think this was the standard Euro Sprint settings unless someone has any other data.

This is for a standard complete airbox with all snorkels and silencers in place, sealed chambers. Runs well, IMO.

 

[MickMaguire]

thanks DJW, much appreciated!

 

[sailfish]

I think that 125 is not stock for the Sprint/Trophy USA setup. My 1998 was jetted 120-115-120. Sorry, I don't know the pilot jet size.

 

[djw]

I could be wrong certainly. They're buttoned up in the bike right now, but I think I had that scribbled down when I last had them apart. They may have been fiddled with before I got to them.

Sailfish is certainly more sure than I. Pretty sure the PJ is 38.

 

[sailfish]

They may have been fiddled with before I got to them.

I'd agree with that, the common thing to do is jet them to 125 or 125-120-125.

 

[djw]

Yup, I got to the fiche this morning. 120-115-120 is indeed stock.