NEED ADVICE

[POORBOY350]

i have an 02 banshee and im wondering what would be the best setup or best parts to go together with what im wantin to build. im wantin to have alot of power so i can do a lil drag racing but still be reliable enough to ride all day just playin in the dunes. or fast trails. heres how it sits... its jetted, has k&n pod filters, pro circuit pipes, stock bore, guy said it had 2mil crank??? and said gears were cut. i have a set of .20 over pistons im going to put in it. i want to build it right! thought about .20 pistons, porting, cool head about 19cc domes(not sure), maybe advancin the timing to. just dont know too much about one just got it a week ago. any advice would be great somebody take me to school lol :biggrin: thanks.

[POORBOY350]

WHAT kind of timing would i want to advance it please somebody explain. i've been reading on here like crazy tryin to find stuff out. learned a lil but not enough. and would i want to shave the head. or any advice would really help like what kind of power would i be looking at having. thanks

[BenBB]

I'll take a crack at it heh, I can at least offer some basics and others with more knowledge can elaborate or correct me...

 

Ok pretty much any 2-stroke will benefit from advanced timing, higher compression, better reeds, pipes/air filter, and of course perfect (or close) jetting. Factories tend to sell them a little detuned so they don't A) blow up on the first ride and last longer. That said, the farther you modify it the less reliable it MAY be.

 

4 Degrees of timing advance, in general and especially Banshees, is a good compromise between more power across the powerband, and too much advance. Drag Banshees can get away with more, like 7 degrees, but most people don't push it that far on a trail machine. You can get there either with a degree key, adjustable timing plate, slot your stock timing plate, or with an aftermarket CDI. Slotting the stocker costs nothing...

 

Higher compression, yes either shave the stock head or go with an aftermarket head with smaller domes. Know that the farther you shave or the smaller the dome, the higher octane fuel you're gonna need to run. Cheapest route is to pull the head (and the little spigot for the hose between the water pump/case and the head) and have a machine shop deck off .030" and slap it back on, run at least 91 octane and you're good to go with a good power boost throughout the powerband (mostly noticable in low RPM's). Go to .060" and you'll probably need to run a 50/50 mix of 91 and race fuel (others can translate that into dome size I dunno offhand).

 

Reeds also make a pretty good difference, your choices there range from just aftermarket petals to full cages, usually with carbon fiber reeds. You can port your own reed cages and come close to the aftermarket ones with good reeds, opinions vary there on what are the best but generally V-Force Delta's are a good choice, although one of the most expensive. I've got Boyeson dual-stage on ported stock reeds on mine and stock cages with FMF torque reeds on my son's, both run nicely, if I had the bucks I'd get some Deltas.

 

Alright pipes and filter you got covered, although the Pro Circuits are more of an all-around pipe and not a drag pipe, which is probably more what you're looking for anyway. Pipe opinions vary greatly as well, your best bet is to try to ride others (with the owner's permission of course heh) and see what you think, that or if you decide to do porting ask your builder to recommend a set.

 

After that you're kind of looking at either porting or upgrading the suspension, just depends on which direction you want to go...

[POORBOY350]

wow man thanks. that helped alot.

-how do you slot stock one and advance it 4 to 5 degrees? how difficult?

 

-would 5 be too much? its not gonna be alot of trails. and about what kind of price range is it for aftermarket cdi's or timing plates?

 

(does the timing go with how much compression you run? i'd like to run as much as possible. cause i will be doin a lil dragging.)

 

running 50/50 race fuel and premium isnt a problem cause i'd like to get as much power as posible but still be pretty reliable.

 

how reliable would shaving .60'' be? then i'd have to run 50/50 race fuel right? and i hope someone does convert that to dome size(not sure if ill be getting cool head or not)

 

-Is .60'' and +5 timing too much? and how will i know how to jet to that?

-I plan on adding .20 over pistons to this setup and prob will get a port job. but what kind of port would i want to run?

 

would i also want to look into better clutches and truing and welding the crank? dont want to go in there if i don have to. you have been very helpful keep it coming... im taking notes lol.

[POORBOY350]

just say i have my head decked .60''(or a cool head and whatever equal dome that is) along with +5 timing, .20 overstock pistons, ported and polished, with my pro circiut pipes and knN filters with stock carbs or stock bored to 32s(know where a set is which would be better?), what kind of horse power would i be looking at? would i need to get hd springs or anything else i need to know about? and what kind of porting could i get? can anyone give me a combo and the hp and what would be necessary with the combo(porting, bore, timing, shaved head or dome size)

[Wildcardracing]

.030" is the max I recommend just milling off the head, any more than that and you'll need to have it rechambered to correct the squish. The stock carbs can only be bored to 27.5mm before you run into the slide bore. For a fun dune bike, I recommend an aggressive dune port with CPI inframes. Just look into the mods on the bike in my sig, very competitive on the hill...yet still well within reason for fast trails and great in the dunes. Even better would be a 4mil. All of your mods need to be tailored to work well together and work well for your riding style. The biggest factor most people have to consider is budget. How much are you willing to put into your shee to get the desired results. Answering that question will help us to form a plan for your build.

[POORBOY350]

Trying to sell can am now and i will have 2 to 3 grand to put down on whole bike and hopefully fully built and nice!

[Wildcardracing]

Trying to sell can am now and i will have 2 to 3 grand to put down on whole bike and hopefully fully built and nice!

With the right builder you could have a nice dune/drag engine and a few suspension mods on that budget.

[POORBOY350]

thats what i figured. im gonna get with you and see what im gonna do or a good idea of right things to do anyway and see waht money and horse power ill have in her. i dont know of any builders in mississippi tho.

[POORBOY350]

also what carbs do yal reccomend? and why?

[Hilarious]

thats what i figured. im gonna get with you and see what im gonna do or a good idea of right things to do anyway and see waht money and horse power ill have in her. i dont know of any builders in mississippi tho.

 

titan racing in florence, ms

google him up.

[POORBOY350]

Thanks Hilarious

 

Let me know what yal think about this setup...! this is what my cuzins banshee has done to it.

 

trinity stage 5 head

.20 over stock pro x pistons

trinity timing plate +5

cool head 17cc domes(runs 50/50 race fuel and premo)

said it had stronger($900) crank that has been trued and welded

jigster 1000 clutches

maybe cut gears cant remember

some kind of alky carbs(running on gas not)

think that is it but the bike runs strong and i think it is pretty reliable im thinkin of replicating this setup because it has the power im looking for and isnt stroked or anything so it probably pretty reliable. do yal have any imput on this setup. he said he had about 2000 in motor and im willing to spend that cause it runs hard! thanks again2