smallfry Posted September 29, 2005 Report Posted September 29, 2005 (edited) Having problems again! Just bought a set of NEW Keihin PJ 34mm carbs. It boggs as soon as I hit the throttle. Feels like it has a dead spot! When I let off and hit it again, it rev's fine... There are no problems with the idle, just has a bogg... ANY HELP WOULD BE APPRECIATED.... THE MODS: 1. NOSS Head 2. 21cc domes 3. Wiseco Pistons bored 50 over 4. 4mm stroker crank 5. 5mm Rods 6. Race Logic stage 3 porting 7. V-Force 3 reeds 8. No box lid 9. TORS is gone 10. Toomy T-5 exhaust 11. Ricky Stator timing plate 12. Compression check is 150 psi on both sides 13. I live at 2200 ft ASL. 14. New K&N Air filters with new outerwears 15. New BOSS Intake from Inland ATV. 16. Thumb throttle (switched back). Edited September 29, 2005 by smallfry Quote
2003LimitedBanshee Posted September 29, 2005 Report Posted September 29, 2005 Since it sounds like it will wind out fine, I am wondering if you have a needle setting issue. Do you know, what position you have the needle clip currently? Quote
wesw Posted September 29, 2005 Report Posted September 29, 2005 most pj 34 come with a ceg needle. ive found they make it run like shit. i would suggest a dek needle. my setup is a 4mm stroker done by jim. my jetting is 60 pilot , dek needle 5th clip 140 mains. at 900 ft you will have to adjust for your elevation you might try a 55 pilot, dek needle 4th clip or 5th, 145- 135 mains i would guess. best of luck Quote
locogato11283 Posted September 29, 2005 Report Posted September 29, 2005 whats ur jetting now??? Quote
Banchetta Posted September 29, 2005 Report Posted September 29, 2005 most pj 34 come with a ceg needle. ive found they make it run like shit. i would suggest a dek needle. my setup is a 4mm stroker done by jim. my jetting is 60 pilot , dek needle 5th clip 140 mains. at 900 ft you will have to adjust for your elevation you might try a 55 pilot, dek needle 4th clip or 5th, 145- 135 mains i would guess. best of luck 420807[/snapback] I agree, I fought for a year w/ my jetting to find out the D needles run a hell of a lot better then the C's....Run the DEK needle for sure...I'm running 170 mains, 58 pilots, and DEJ needle in the 4th clip...I'm also running a stroker ported for midrange from a local builder.. Quote
smallfry Posted October 1, 2005 Author Report Posted October 1, 2005 Everyone who replied, THANKS!!! Going to Dumont to try your guys advise tomorrow. Bought a few different sets of mains, needles and pilots to take with. I will keep you all posted on what happens. Will also post up some pic's of Dumont for all you guys who haven't been there. Still open to any other advise.... Quote
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