34mm Keihin PJ Slight bog 0-1/4 throttle?

[SuperMex]

I just put on some 34 PJs and have everything dialed in plugs look perfect just have slight bog between 0-1/4 throttle I cannot get rid of I have been tinkering with the air/fuel screw and just can't seem to get rid of it. My settings ASL-600ft Dune port, V-Force 3s, 165 mains, 48 pilot, CEJ Needle middle clip, 1/2 turn out on A/F screw. Any ideas will greatly be appreciated.

Edited June 2, 2011 by ChuyVargas

[boomadge]

I just put on some 34 PJs and have everything dialed in plugs look perfect just have slight bog between 0-1/4 throttle I cannot get rid of I have been tinkering with the air/fuel screw and just can't seem to get rid of it. My settings ASL-600ft Dune port, V-Force 3s, 165 mains, 48 pilot, CEJ Needle middle clip, 1/2 turn out on A/F screw. Any ideas will greatly be appreciated.

 

Slight bog usually means its a little rich on the pilot, 0-1/4 throttle tells me that you need to raise the clip 1 notch on the slides (wich will lower the slides to lean it just a tad).

you will have to most likely re-adjust the the A/F screw.

 

If it makes it worse then the "bog" is actually a "hesitation" and you will have to lower the clip down 1 notch from the original middle notch (wich will raise the slides to richen it slightly)

Again adjusting of the A/F screw will be needed.

 

Any one else care to disagree or add something ?

 

Good luck

[bansheemandan]

put a bigger pilot jet in, i am at 600fas and i have 55 pilots and air screws 1-1/2 out

[bansheemandan]

also you should be a min. of 1 turn out on the air screw

[dave5.0]

I'd say richen the pilot too. If you're only half a turn out and that's where it runs best. Messin with the clip on the needle shouldn't have anything to do with that. Wouldn't think you would have to readjust the a/f screw after changing needle position either. I've had the pj bog before and pretty sure it was lean on the pilot.

[sleeper06]

that cej need diameter might be to rich might need cel,diameter affect that range

[SuperMex]

Went to a 50 pilot from the 48 and its bogs worse now i'm 1 1/2 out on the A/F and thats as good as it gets I think its to rich now on the pilot but hey i'm no expert. Any more advice fellas would greatly be appreciated?