shortbus Posted March 15, 2004 Report Share Posted March 15, 2004 Hey I'm new to banshees but know quite a bit about 2 strokes. Just bought a 95 shee and i'm having some troubles with it idling. The top end is (supposed) to be rebuilt so i'm thinking its 20? over, It has stock pipes,k&n fillter no outerwear,no lid, trinnity 2 into 1 intake with a kiehin PJ carb 36mm? 34?. It came with a 72 pilot,152 main needle on 4th position down from top of needle. The engine runs good past 1/8 throttle but horrible at idle,off idle. When idling one cylinder (left side) seems to be missing really bad. Hardly any smoke comes from that pipe? How can this be with one carb? I've checked the spark,installed new plugs, checked the reeds,checked the compresion and all is good. With the 72 pilot it barely idles and the choke idle knob is turned all the way out idle mixture screw has NO effect on idle speed/throttle response. I installed a 60 pilot and this did nothing but make it backfire at idle and run poorly, not even rideable. I cleaned the carb with compressed air and checked float level(16mm) its good. With the 72 pilot it would run for 15 minutes then foul the plugs and not restart. What should the compression tolerance be, between the two cylinders? Only thing I can think of is crankseals leaking??? Sorry for such a long post for a newb,just wanted to give a good discription of my problem. Any help might save some hair on my head!!! Quote Link to comment Share on other sites More sharing options...
sredish Posted March 15, 2004 Report Share Posted March 15, 2004 Hey I'm new to banshees but know quite a bit about 2 strokes. Just bought a 95 shee and i'm having some troubles with it idling. The top end is (supposed) to be rebuilt so i'm thinking its 20? over, It has stock pipes,k&n fillter no outerwear,no lid, trinnity 2 into 1 intake with a kiehin PJ carb 36mm? 34?. It should be a 33 or 35 PWK, if it came straight from Trinity. It came with a 72 pilot,152 main needle on 4th position down from top of needle. The engine runs good past 1/8 throttle but horrible at idle,off idle. When idling one cylinder (left side) seems to be missing really bad. Hardly any smoke comes from that pipe? How can this be with one carb? With the 72 pilot it barely idles and the choke idle knob is turned all the way out idle mixture screw has NO effect on idle speed/throttle response. 72 Pilot Put a 50 or even 45 in and lower the needle to the third position. The 4th is great with pipes, but with stock pipes, the 3rd would be better. The 50 might not be perfect, but starting and idling should be better. Your going to have to jet your main, or make sure your plugs are coloring perfect, then fine tune the pilot to start and idle good, and it's dependant on your elevation.. With pipes and reeds and all, I'm running a 55 pilot and 220 main at 700 feet. I'd say 150 is maybe close, you might need to come up a little, but you might need to go down some also, you'll just have to do some tinkering. Sorry for such a long post for a newb,just wanted to give a good discription of my problem. Any help might save some hair on my head!!! No prob. Patience and this prob will be overcome. Quote Link to comment Share on other sites More sharing options...
shortbus Posted March 15, 2004 Author Report Share Posted March 15, 2004 It is for sure a PJ... I'm gonna try a few pilot jets today and see what happens. Quote Link to comment Share on other sites More sharing options...
sredish Posted March 15, 2004 Report Share Posted March 15, 2004 It is for sure a PJ... I'm gonna try a few pilot jets today and see what happens. It definitely sounds like a pilot problem. If it's backfiring when you back it down some, it's probably getting closer, but since it's still rich, it's loading up and backfiring. Honestly, I'm not as familiar with the PJs. I'd back your pilot on down until you can get it to idle, and don't give up after a few changes. Holler back and let us know. Quote Link to comment Share on other sites More sharing options...
shortbus Posted March 15, 2004 Author Report Share Posted March 15, 2004 Gonna replace the left crank seal tonight then mess with the pilots. The bike shop in town didn't have the sizes i want so all i could get is a 62 pilot. Gonna try it out. I'm thinking a 65 is what i need in there??? Quote Link to comment Share on other sites More sharing options...
Banchetta Posted March 16, 2004 Report Share Posted March 16, 2004 HOLY Shit!!!! Listen up and read post....60 or 70 pilot is waayyy to big....I'm running a 4 mil stroker and don't even run anything close to that size pilots....I'm running a 42, since the 45 was too rich....Put a 45 in there and go from there.... Quote Link to comment Share on other sites More sharing options...
shortbus Posted March 16, 2004 Author Report Share Posted March 16, 2004 Found an air leak!!! Left side crank seal. Crank bearings are bad, rod bearings are bad,rist pin bearings are bad, crank seals are bad. Total rebuild on the way. Quote Link to comment Share on other sites More sharing options...
shortbus Posted March 25, 2004 Author Report Share Posted March 25, 2004 It's back together now!!! I went and got some pilots and mains. I'm gonna start with the 45 pilot and leave the main. Found some cool stuff while in the motor to,,, Hinson clutch basket,,,Brand new wiseco pistons(no carbon on top at all), Fresh bores with cross hatching still in them. Cylinders look to be ported and polished!!! Quote Link to comment Share on other sites More sharing options...
dirtbike killer Posted March 25, 2004 Report Share Posted March 25, 2004 A 152 main is to small for a single carb setup. That would be close for a dual setup. With no porting I ran a 175 in my 33mm and a 190 in my 35mm, and that was at 4500ft elevation. Quote Link to comment Share on other sites More sharing options...
sredish Posted March 25, 2004 Report Share Posted March 25, 2004 HOLY Shit!!!! Listen up and read post....60 or 70 pilot is waayyy to big....I'm running a 4 mil stroker and don't even run anything close to that size pilots....I'm running a 42, since the 45 was too rich....Put a 45 in there and go from there.... that is exactly what I was thinking, but then though that maybe the PJ pilots are a little different, so I kept my mouth shut on that. I run a 52 in my 35mm PWK with pipes and all. Quote Link to comment Share on other sites More sharing options...
banshee76179 Posted March 25, 2004 Report Share Posted March 25, 2004 I run 50 pilot ... 175 main 33mm keihin 3rd clip from the blunt elev. 616 feet Quote Link to comment Share on other sites More sharing options...
shortbus Posted March 27, 2004 Author Report Share Posted March 27, 2004 My budy has a shee with the same 2 into 1 settup so I went off his jetting specs at first. I ended up with a 50 pilot, Middle needle clip and a 175 main. The motor likes the air screw at 1 3/4 turns out. WOT plug chop looks good (dark tan). The moddrange on this thing is CRAZY!!! Thanx for your help people. Quote Link to comment Share on other sites More sharing options...
FoxBansheeRacing Posted March 27, 2004 Report Share Posted March 27, 2004 If you think it runs good with stock pipes, slap some good aftermarket pipes of your choice on there and have the ride of your life. Quote Link to comment Share on other sites More sharing options...
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