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Cheetah 485


patarol

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After 3 years standing teard down in the garage i finaly going to build the cheetah 485 powervalve engine. but just a quick input from you banshee builders needed: I just wonder what absolutly tranny mods you think i should do when putting this topend kit on? no override tranny. gonna ride trails and other funn driving. no dragging, just funn driving. should i get strait cut gears and lockup? have a barnet clutch in now, will it hold? sorry my bad english i`m from Norway. thanks for your help!!!!

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Have the transmission modded to shift better. Kevin Herr @ HJR does a tranny mod that will make it shift MUCH better than stock.

However, nothing is as good as an override, period.

You specifically said no on that.

 

I would get a heavy duty clutch kit, billet basket and a pancake bearing.

Otherwise, you don't need a set of straight cut gears, way overkill on a trail bike.

 

I don't think you'll need a lockup either, just some good stiff springs.

 

You're about to triple or quadruple the power of your motor.

 

Is your chassis/suspension up to snuff?

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485 is a beast you will absolutely need a modded trans and NO not a shift mod or bearings on the shaft or bla bla bla you will need the gears cut and a shift star and shift shaft mod done after that it will shift like a dream,. an override is great for drag racing but these mods done to the stock trans are for all the rest of us. a lockup is a decent idear but not really really needed if you dont mind a stiff clutch hand a better clutch would be needed. i personally like the driveline perf. HD clutch on sleezebay. the springs are stiff as hell but you might be able to stagger them with 15%'s and be ok.

 

a lockup wont hold your clutch at lower rpm's so a locker with stock springs dosent work in the trails and normal riding. unless you ride around at 8000 rpm to 10,500 all the time..

 

i do this mod HJR does it adn WCR offers them also i believe wcr's is a micropolished trans also a lot of guild builders know about this style of trans. they work very well i believe they should be part of a complete engine package.

Edited by camatv
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After 3 years standing teard down in the garage i finaly going to build the cheetah 485 powervalve engine. but just a quick input from you banshee builders needed: I just wonder what absolutly tranny mods you think i should do when putting this topend kit on? no override tranny. gonna ride trails and other funn driving. no dragging, just funn driving. should i get strait cut gears and lockup? have a barnet clutch in now, will it hold? sorry my bad english i`m from Norway. thanks for your help!!!!

You won't need any trans mods to run it..I ran mine for 2 yrs before I got a cut trans. A duneable override is nice. But you'll be ok without it.
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Side cut your gears, shift star mod, roller bearing from cascade w/ stock spring, and shift shaft mod. You'll be good to go on the transmission department.

 

I'd get a billet basket and some HD springs as well. The straight-cut gears would be overkill.

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Thank you very mutch for your replys.

I gues a better shift star and shift drum wil be put in then, the clutch i have now is a barnet hd so gues i give it a try, easy to mod that later. want to do the right tranny mods when the case is split. pancake already bought. swing arm i wonder how long i can get for my kind of driving? +4" or +6"? better shocks Øhlins. +2 A-arms are the mods I`m getting on the driveline.

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I wouldn't give WCR a dollar of my money after the "EXTREME" transmission fiasco, etc.

Matt...why did you get a cut trans if it ran fine on a stocker (Not being a smart ass, just asking...)

I got one for hill climbing.. The hills we ride on are very steep, and alot of times have no more then a 5ft run. Its just easier to upshift on a steep hill with the overide. I never had any issues with the stock trans, I just like the overide better.
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I run a modded shift star, shift pro roller detent arm but stock spring, modded shift shaft and this last time around i cut my trans. It is about as good as it gets i think without going to an override. I also run RZ shift forks, but i really dont believe they made that big of a difference if at all. Here is a link to my post showing what i cut

 

http://bansheehq.com/forums/index.php?showtopic=137478&st=0&p=1187177entry1187177

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I run a modded shift star, shift pro roller detent arm but stock spring, modded shift shaft and this last time around i cut my trans. It is about as good as it gets i think without going to an override. I also run RZ shift forks, but i really dont believe they made that big of a difference if at all. Here is a link to my post showing what i cut

 

http://bansheehq.com/forums/index.php?showtopic=137478&st=0&p=1187177entry1187177

 

 

What do you gain cutting that?

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that Cutting i can do my self, what gears to cut?

 

You can do it yourself, but its a lot easier to just send them out and get it done. If someone with access to a mill does them, all the cuts will be perfectly square a lot cleaner than doing it yourself. Basically just cut the gears that have 6 dogs on the sides of them. (Can't remember which ones they are off the top of my head). You will have to disassemble your trans to do this though.

 

I know Kevin at HJR can do this for you. Give him a call. His number is in my signature.

 

- Jared

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to me that trans mod is an absolute must do. and your right its better to do it all now even if you have to wait i tried to "dune" my 485 on alky and it was an absolute handfull i ended up taking the motor out and going full drag with it. in the dunes i ran a 1/ 2-5 duneable it was fun but very hard to control at times.

 

a billet basket is a must also i highly recomend the mattoon basket if your pocket book will allow a hinson billet w straights works excellent or straights and the matton is a good second choice also TZ bearings ont he crank are a good idear that would be a nearly bullet proof bottom end.

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