Should I Re-Jet

[Yamaha]

Hello, this is my first post here, and I would just like to say Hi and thanks for letting me be a part of bansheehq, with that said here is my question, About two months ago I paid $1800.00 for a 99 Banshee, when I bought it the temp was around 40 degrees and it took probably 50 kicks to fire it up since it hadn't been ridden in about amonth plus it was so cold, it ran perfect except for the fact that the power band seems to just drop off after about 1 to 2 seconds at full throttle.

It will only fire on the first kick if it is (HOT) outside, and once I ride it for a while it becomes hard to start (takes about ten kicks) I don't know if it's just because it's hot or if maybe I need to adjust carbs, or rejet or something, also when I sart it and let it warm up and go for a ride the power band kicks in very easilly in all gears(very snappy) but once its ridden for a couple minutes I have to rev it pretty hard to hit the power band, and t doesn't pull nearly as hard, do I need to rejet or something?

My current mods engine wise are Toomey T-5's, Carbon Fiber Boyseen Rad Valves, Boost Bottle, Pro Design Pro Flow Filter and Adapter with no air box lid, stock carbs with 27.5 and 280 jets.

What size jetting would you recommend for my banshee at I think about 370 ft elevation around 70 to 80 degrees?

Sorry for such a long post

[ogre03]

Welcome to the HQ I don't think your jetting sounds that far off from where you should be. You can try doing a plug chop and see, But I don't think that's it. I'd tear your carbs apart, clean the shit outa them, make sure your jets arent clogged, put fresh gas in it, change your plugs. See what that does for you.

[Animalman294]

Just a suggestion but you may also check your compression. If the compression drops below 90-100 the shee's are a bioch to get started. But once they are warmed up everything tightens up and makes it a little easier to start, but I would check that first before tearing the carbs off......Hope this helps, and welcome to the HQ's

[Yamaha]

It's not only hard to start when it's cold, at first it would start fine once it was warmed up but now I have to wait about ten minutes after a good ten minute ride or it's a pain to start.

The plugs are a little lighter than a hershey bar, would low compression make takeoff slugish after warmed up? because when I first start it I can let it idle for about a minute or two and go to the road and come to an idle in first gear and if I hit the throttle the power hits instantly, but after I ride for about ten minutes I try that and it just hesitates for a while and gradually hits but not near as hard?

Also before I forget there are two small black hoses that run under the tank to the front of my shee an just dangle there and one of then drips water (not worried about that one) but the other one drips my gear oil all over my header, sometimes it will just spit a good wod of the oil out of there, why is this? too full or something?

Also when i tear down my carbs what notch would you recommend I put the needle clip back in?

[gregbowler]

I would try some 300 mains and some stock 25 pilots.

 

8 sizes for pipes = 280

1 size for snorkel = 10

1 size for airbox lid = 10

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300 main

 

 

 

 

lower needle clip 1 clip for the reeds

[Yamaha]

Lower needle clip one clip for the reeds, my clip needs to be on the #4 notch from the blunt end or #2 from the tip of needle?

Sorry but I'm still learning about the needle clips, never messed with them before

[Wicked98Shee]

there are no definate jet settings for pipes,airbox mods,reeds, ect, because every motor is different..... i'd bump up to around a 320 main and a 27.5 pilot and go from there .. make sure you get wot and mid plug readings and jet from there

Edited April 16, 2006 by Wicked98Shee