No snap whatsoever

[HammerShee99]

I've just noticed that in the past couple days, my Banshee hasn't been running right. The powerband's absolutely not there, it seems to rev really slowly, and it won't rev beyond about 3/4th throttle. I'm running mixed pump gas/racing fuel (114 mixed with 87) and this is my second tank of it... it ran fine through the first tank of mixed, so I wouldn't think that'd be the problem, and also since it ran okay through that batch, I wouldn't think that the jetting would be a problem either. All I did with the carb was adjust the idle. Do you think that I should still have the jetting adjusted, or do you think the mixed gas is the problem?

 

Any help is appreciated.

[375hp banshees]

I've just noticed that in the past couple days, my Banshee hasn't been running right. The powerband's absolutely not there, it seems to rev really slowly, and it won't rev beyond about 3/4th throttle. I'm running mixed pump gas/racing fuel (114 mixed with 87) and this is my second tank of it... it ran fine through the first tank of mixed, so I wouldn't think that'd be the problem, and also since it ran okay through that batch, I wouldn't think that the jetting would be a problem either. All I did with the carb was adjust the idle. Do you think that I should still have the jetting adjusted, or do you think the mixed gas is the problem?

 

Any help is appreciated.

 

your filters clean ? (sorry had to ask).. what do your plugs look like...as it breaking up or just rev's slow

[HammerShee99]

Just cleaned the filter, actually

 

I also cleaned out the carb, although it looked clean enough. Plugs are a dark brownish color, so I'm assuming the jetting's at least close. I'm gonna get a comp tester and check the compression tomorrow or monday... talked to a guy who works on 2 strokes and he thought it might be either the rings or pistons, which I'm hoping it's not, but I wouldn't be surprised... obviously the rings would be the lesser of the two evils though.

 

The engine basically revs a lot more slowly than it should, and when it gets to about 3/4th throttle, it almost acts like it would if it was hitting a rev limiter, it'll just hit that point and hold there even if the throttle's all the way in.

 

Thanks for replying

[HammerShee99]

Took it to the shop this morning, the mechanic's gonna tear into it in a couple days and let me know what needs to be replaced... if it won't be too serious, I'm probably going to invest in some cool heads, replace the chain/sprockets, and perhaps get a shift kit put in as well.

 

Ironically enough the guy just got done working on an '03 Banshee and he said that it has no problem putting the back fenders on the ground in 4th gear, and mine wouldn't pick up the front end past 1st gear, so I'm assuming it was way low on compression when I bought it... hopefully this will wake 'er up.

[HammerShee99]

Can we move this to the repairs/mods forum? It actually didn't have anything to do with the jetting, so it'd be more suited for the r/m forum.

 

Anyway it was in worse shape than I realized, gonna have to rebuild the top end and get a new set of cylinders, so not gonna be cheap... the good news is, it already has a 4mil stroker (dunno why the guy who sold it to me didn't mention that) so once it's back together it should rip.

 

I was told that I wouldn't be doing a whole lot of good by putting cool heads on with the stroker setup, since I'd be paying more to get the heads machined out and I wouldn't be gaining much, if any, HP... is there a cheaper way to keep the engine runnin cooler?

[Dinner]

Must be pretty beat up to have to run new cylinders. Or is there the chance of boring them out enough?? What happened to it?

[wesw]

first off, if it is truely a stroker it will have to have a plate under it or cut domes.

 

i guess you could machine the stock head, but i would just a head.

 

bore that bitch out, dont bore it if its over 80 thousands, usually if its a 4mm you have to run 795 pistons they come in 20 thous overbores. so has to be 20, 40, 60, 80.

 

then get with david noss and get some cut domes for a 4mm stroke would be the best guess.

[HammerShee99]

Must be pretty beat up to have to run new cylinders. Or is there the chance of boring them out enough?? What happened to it?

 

It was already bored 80 over, so we couldn't go any further with it... from the looks of things they didn't do the greatest job of boring it out, which is probably why it never got good compression to begin with.

[KaosBanshee44]

everytime wesw post i can't help but check them boobs out...lol

[HammerShee99]

everytime wesw post i can't help but check them boobs out...lol

 

Those are some tig ol' bitties right there... I bet Ms. Canada's jealous.

[dajogejr]

Look on here in the classified or on fleabay for cylinders...

Good luck..

[HammerShee99]

The cylinders are on the way, I'm guessing we'll have everything back together by next tues. or wed.

 

When I first rode my quad, I had no idea why everybody was saying Banshees were fast, because I wasn't impressed with the power delivery... now I know why. There was another 'Shee in the shop where I took mine, and the mechanic just finished rebuilding it (kind of ironic considering that there are only about three people in this whole area who own Banshees) and he let me take it for a spin, and that one was doing at 1/4th throttle what mine was doing at full throttle when I bought it, so yeah... mine was in pretty bad shape.

[shee rips]

that is pretty bad, if it wouldnt pull the front tires in 2nd gear. especially for a big bore stroker. a stock banshee will wheelie in probably 3rd or 4th so when you get that thing back together it should be like you just came off an xr 80 :thumbsup:

[375hp banshees]

The cylinders are on the way, I'm guessing we'll have everything back together by next tues. or wed.

 

When I first rode my quad, I had no idea why everybody was saying Banshees were fast, because I wasn't impressed with the power delivery... now I know why. There was another 'Shee in the shop where I took mine, and the mechanic just finished rebuilding it (kind of ironic considering that there are only about three people in this whole area who own Banshees) and he let me take it for a spin, and that one was doing at 1/4th throttle what mine was doing at full throttle when I bought it, so yeah... mine was in pretty bad shape.

 

don't know where you bought it from but, if there are only three in your area & 1/2 of them are there, might want to make sure he isn't the one that did it last time ( if you think it was shotty mach. work)

[HammerShee99]

Well, this Banshee didn't come from this area, I actually bought it off eBay from a guy in eastern Iowa (I'm in north-central NE). He seems to do good work because a lot of people take their machines to him, but he is a bit pricey...

 

At any rate, we got it back together, and we hadn't thought of the fact that the head was machined for .80 over pistons, so it still wasn't making compression... sounds like I'm gonna have to go with new heads anyway. He's gonna call Pro Design and find out if they make anything for stroker motors. I'll let you know what we find out.