manifolds and reeds

[2strokeme]

I need some help folks. Recently purchased my first banshee Figuring i'd do some stuff to make more performance I bought new Vforce 3 reeds. after pulling out what i thought was stock reeds i noticed they were Boysden and also had spacer on it. They look like almost new.

Everyone told me to go on and put on the vf3s so i did. But i couldnt reuse the spacers w/ them because they would not fit. Now heres my problem. The instructions said cut the rubber fins on the manifold flush so the new reeds would fit in. I did and installed them as well as a cool head w/ 19cc domes. Now my banshee seems like it WANTS to unleash more but something is holding it back. I dont know if i disturbed the flow by cutting the rubbers in the manifolds or if it is because i swiched to vf3s w/ no spacer.....Should i have just stuck w/ the Boyseden's??? Do i need new manifolds now? i know if i go back w/ the others i'll have to buy new ones because of cutting the rubber fins. Please help me before i go to local Yamaha shop.

Also do you think 19cc domes was ok upgrage???/

Thanks for your time!!

 

Stock motor except for cool head and 19cc domes, Fmf Fattys, boost bottle, k&n,was told it is jetted but not sure size or anything.

[streetbanshee]

im thinking your problem is with those 19cc domes ur in need of some race gas wats ur elevation ?

[.100_over]

Yea what he said.......i have the v3s and just cut my manifolds down with a knife :biggrin: ......worked PERFECT for me...

[2strokeme]

I am using Unical race fuel, not sure what octane it is but it's up there---high as u can get around here. I dont know.....I figured it would almost get rid of the take-off hesitation and i still have some. I have FMF Gold series on there, should i change them out, i've been looking at CPIs,or Toomeys,

Also do reed spacer make much difference??? Thanks

[Bansh-eman]

its probly your jetting... you went from stock reeds to VF3? or was it boysen RAD to VF3? check your jetting... as far as your bile running 19cc domes... your over doing it, your bike is pretty much stock, theres no resaon to run 19's... bump those babys to 21s or 22s and you wont be forced to run race gas but will still get the use out of that head....

 

if you know how do a plug chop and see if you need to rejet... if not do a shearch and youll find several posts of how to do it...

[2003LimitedBanshee]

Sounds like a jetting issue most likely. Are you experiencing a bog? As mentioned 19cc is a pretty small dome, unless you are at elevation, or the bike has been ported (doesn't sound like it). I went with 20cc domes but most will go slightly bigger. I noticed a huge increase in the bottom end pull of the bike when I upgraded to my NOSS head, so I would have to assume that something is off. As far as the reed install goes. You have to cut the manifold for the reeds to even be installed, and yes you would need to replace the manifolds if you went back to stock or Boyesen reeds; but you don't want to. The VF3's will far outperform the stock or Boyesen reeds, so there must be something in the setup. Keep in mind with that head, you may be sacrificing a small amount of top end with that much compression (probably won't notice seat of the pants, dyno maybe), but then again you aren't running a top end minded pipe. Switch to the Toomey's (T5 would be my recommendation) or the CPI's (probably my next pipes) and you might see some of the top end sacrifice.

[2strokeme]

I just got done riding it again to make sure. Full throttle I'm getting a little bog about mid-range, probably when i shift to 4th gear. but dont get me wrong i feel much improvement, but i can tell it's not 100%. So should i try the toomeys before changing out reeds, or just go ahead and run 21s. I probably am overdoing it, prob too much compression right now. But lesson learned. Thanks for your input,

 

P.s. Anyone out there w/ a set of t5s they are wanting to sell. ??? :biggrin: