06 660

james did u ever think what else could be wrong with my 660. i put 700 belt jbs sheave with i think they was 14 ounce weights, orange spring. i rerouted the return line up and over and actully a lil bit smaller line. also put dynatech cdi box on it. it runs fine but top speed is 42 mph 45 down hill. it shoud get over 50. also is there some way to reroute the intake to make it quieter, and make box quieter.

Did you clean both sheaves really well and then check to make sure the belt was riding all the way to the top of the primary when you rev it up?

Yes I did. It actually rides about a 1/8 above the primary sheave.

James have u got any thought on this. Or has anybody got any ideas. I know that sheave is bad ass. It grabs and pulls hard. Just need to get my speed up more

When You get to that top speed, is it hitting the rev limiter (sound like it is cutting out) ?

No rev limiter. Has dynatek Cdi box.

So what is it doing when You get to Your top speed ?

Just quit pulling ?

Cutting out ?

just runs steady at 42, i have no rpm gauge but i do have the dyateck cdi box. i can put stock box on and it hits rev limiter, but dyateck on and it just runs steady, no different in speed with either boxes, jbs sheave with i think 14g weights, orange spring 700 belt

Oldmanjohnny wrote:

james did u ever think what else could be wrong with my 660. i put 700 belt jbs sheave with i think they was 14 ounce weights, orange spring. i rerouted the return line up and over and actully a lil bit smaller line. also put dynatech cdi box on it. it runs fine but top speed is 42 mph 45 down hill. it shoud get over 50. also is there some way to reroute the intake to make it quieter, and make box quieter.

What return line did you rerought the fuel line.

I have the exact same setup and I let off at 43 so I wouldn't hit the rev limiter because I don't have a cdi.

compression???does it burn oil....valve adjustment??

the return line i made it go up and over the fuel pump back to tank so it will have to push harder to get return fuel to tank. i mean the sheave is awesome, on low end it will spin tires easly in high, hell it will climb straight up a tree, but i just want more speed out of it. i like to be a little faster, at least over 50. i ordered me a wet cluch maybe that has something to do with it. gonna replace that and see what happens, and then i dont know where to go from there

dont use any oil, and havent checked compression, valves ok

james i might call you tomorrow, i ordered a stock wet clutch, need to see if i need to do anything to that extra, to help me out

what size tires you running , any thing else you done to moter, maybe add the weight to the wet clutch when you get it

stock tires, plug, fuel filter, and thats it, when i bought it it was running 30 and hitting rev limiter, put sheave on and new clutch and stuff went down road hit 42 mph and rev limiter, came back put dyateck on went down road hit 42 and no rev limiter, just ran steady

i need a pic of the fixed sheave and the washer that hold the spring

Ok. The secondary and spring. I will prolly tear it back down next week. I will send u one then. Also i will call u tomorrow to check on any extra assessorys for the wet clutch that u think I might need. It's that ok

you may be on about wet clutch , but I 'm still learning these clutches my self , also don't know what type wet clutch you ordered but be careful of off brands been a few on here tell of them coming apart an wiping out the moter , I would get the Yamaha brand

Oh I did. I got stock Yamaha. And I'm a dirt bike racer so these double clutches I don't understand and the rhino is different but when u get it where it purrs it will be bad ass

well look into adding the weights to the wet clutch you can read stuntmanmike's tread on it, lots of folks seem to like it good luck with it