newbe with some general questions

[burhead]

I am new to banshees but not to 2 strokes. I recently bought a 96 banshee that was blown up. I put a rebuilt bottom end in it and a new topend. It has fmf fatty pipes, boysen rad valve, open airbox, and milled head. The problem is that it seems to have very little bottom end and a very short and somewhat violent powerband. It seems as if 2nd through 4th gear just blow by and I find my self having to downshift from 6th to 5th alot. I have only ridden one othere bashee before this one and it was 100% stock. I am just wondering if this is the nature of the beast or if my jetting is off or possibly geared too tall. It currently has a 14 tooth front sprocket (the one on my other motor was a 13 tooth). It is jetted with a 30 pilot and a 300 main at 2000 ft. The plug shows a black slightly grey insulator. I am accoustomed to polaris 400 2 strokes and honestly my modified 400 sport would give this thing a run for its money in a 300 ft race and would kill it on the trails. The power goes from nothing to wheels spinning through a couple gears then 5th and 6th are kinda blah. Anyone got any ideas of what I got wrong?

[sleeper06]

Are you running pump gas,I have a similar set up on a bike here at sea level you being 2000ft isnt even a jet size yet.I have 280 mains,27.5 pilots,vitos needles 4th clip

[RippinShee]

Banshees don't have bottom end really. Depending on the pipes, the power band will come on; "wailing like a banshee". It also takes a lot to pull in 6th, you need a lot of room; which may be why you're downshifting.

[burhead]

I am running 91 octane pump gas. What are you guys using for front sprockets. I was under the impression that fattys were supposed to be a low to mid range pipe. Mine seem to do well in the mid range but perform poorly in the low rpms.

[RippinShee]

Banshees simply don't have a lot of bottom end. 91 -93 pump gas is fine. Stock sprocket in front is 14. If you want a little more bottom end, less gear put a 13 in the front then.

[burhead]

So is there a better set of pipes out there to get some low end. The stocker I rode didnt have the bog that this one has. For the type of trails I ride coupled with the short power band this thing has, this thing is gonna be a handful.

[John]

So is there a better set of pipes out there to get some low end. The stocker I rode didnt have the bog that this one has. For the type of trails I ride coupled with the short power band this thing has, this thing is gonna be a handful.

The stocker is pretty well rounded. I ride trails and drag for fun sometimes, and when I bought my Shee stock, it was average at best, very easy to handle and the power wasn't violent. The problem is most of the upgrades that are done to these motors increase horsepower greatly, and these bikes aren't overloaded with torque to begin with. I would use the Paul Turner Mids if you want a mid range, have a set of jugs setup with a woods port and do a 28mm pwk conversion. A lot of guys like the 2:1 carbs, I personally don't. I went the route of the T5 pipes and the power comes on similiar to a turbocharged car, I have to wait for it, but when the bike gets on the pipes it's out. Much more of a top end pipe, and hence the reason I am looking to make the switch to something to get the mid range back. Just don't try to expect this bike to behave like a four-stroke. It's nothing like any other quad out there, it's way more powerful than the competition and if your gonna try to make this into an agile bike for the woods. Remember the chassis is very old and outdated and usually not the most ideal when it comes to agility.

[burhead]

I had heard good things about the PT mids from the guy that did my machine work on the topend. He said the fatty's were also a good trail pipe and I opted to go with them because they were already on the bike. I am also questioning my reed setup. It is a boysen rad valve with the carbon petals. I have run these on my polaris' and the only real difference I noticed was snappier throttle response. Anyone else running the boysens? I think I am going to play with the jetting somemore and see if leaning it out will help any. Thanks for any input you guys may have.

[John]

I had heard good things about the PT mids from the guy that did my machine work on the topend. He said the fatty's were also a good trail pipe and I opted to go with them because they were already on the bike. I am also questioning my reed setup. It is a boysen rad valve with the carbon petals. I have run these on my polaris' and the only real difference I noticed was snappier throttle response. Anyone else running the boysens? I think I am going to play with the jetting somemore and see if leaning it out will help any. Thanks for any input you guys may have.

 

I have the Vforce3s, I can attest to me advancing my ignition timing +4 and the reeds to making my motor come alive. The reeds definitely increase the throttle response. Where is your jetting at? I have mine setup to Toomeys specs, even using the Toomey needles which I would like to switch out in the future for the OEM needles. I only have to make adjustments to the air-fuel screw on my bike to usually fix any jetting issues. I only ride the bike spring through summer, so the weather doesn't really make me need to do rejets with all the seasons.

[burhead]

I am running 300 mains and 30 pilots. I think I am going to try 27.5 pilots and maybe lower the needle one notch. Thanks for the replys.

[alf44]

Is your timing advanced. If not advance it too +4. I run the 2 into 1 carb setup and like it for playing on the hills treeshots and trail riding. Not what you want for dragging. Bumping up too 28's is a good choice also, and if you want more torque and bottom end get the paul turner pipes. there was a set for sale here in the for sale forum. Buy em and I'll polish them for $145. lol!