i have a stock 670 formula z witjh a 1.25 ripsaw 144 studs and i need to beat my brothers 700 mxz for braging rights so Im look ing for a good clutch set up and some other small mods without tearing too deep into the motor, dont want to cut +shave anything quite yet ,also i weight around 150 pounds + run alot of big lakes and club trails if that helps for clutching

i have a stock 670 formula z witjh a 1.25 ripsaw 144 studs and i need to beat my brothers 700 mxz for braging rights so Im look ing for a good clutch set up and some other small mods without tearing too deep into the motor, dont want to cut +shave anything quite yet ,also i weight around 150 pounds + run alot of big lakes and club trails if that helps for clutching[/b]
i have the same seld and my buddy has a 99 mxz 670 ho i am about 240 and he is about 190 i beat him it is close all i have are v force reeds they are awsome easy and not to much cash

The 670 is a Rotary Valve motor. It does not have reeds! :crazy:

:withstupid: SWRules

HA HA HA HA HA HA HA HA,

That's funny!!!!

I hope you didn't pay someone to install those reeds.

that 99 HO must have a hole in one of the pistons.

If he's 50lbs lighter than you and you're still winning the HO is broken somewhere.

reeds dont fit my sled worth a s@#t haha need some better info than that

What kind of rpm's is your sled runnin' at when its pinned for awhile. what clicker are you in on your primary clutch? One mod that works great and has nothing to do with the motor is less rolling ressistance. I think extrovert drivers would give you some extra power to the ground after loosening your track some.

Vforce reeds on a rotary, it didnt take long for someone to spot that one. reminds me of the time years ago when i stopped to look at a 72 440 TNT that was for sale on the side of the road, when i stopped the owner came out too tell me about the sled and how he just had it rebuilt, was going ok until he told me he had a new cam put in it. i looked at him and chuckled and drove off.

I'd just like to know how much Beaver was charged for the VForce install.

Maybe he meant the installation of the VFORCE sticker was easy.

whats an extrovert driver

love the info when i got the seld i had a guy at a local shop go over it just to clean the carbs and check it out he said that what was there(reeds) i dont know that much about it so guess ill get a new guy. but with all the good info on here been doing a lot more myself was a little scared at first but every? i ask has got a good results so thanks also my seld is very fast and everything seems to be stock the guy i got it from had little info but i dident realy ask iv put 1500 miles or so on it in 2 years not enough snow around here thanks for the info

Well to best explain it, if you look where your track is actually driven off of a shaft you can see that you have two drivers that grab the little nubs sticking up out of the track and thats what allows the track to begin to move. An extrovert driver is kind of close to the same thing except for that the driver "nubs" actually go through the windows on the track(must have a track that all windows are open) This makes it so that when your track is loosened up there is practically no chance of ratcheting. The looser the track, less rolling resistance.

If you look here http://imagescommerce.bcentral.com/merchan...diriver_200.jpg (http://imagescommerce.bcentral.com/merchantfiles/5014403/extrovert-diriver_200.jpg) you can see how the teeth stick out away from the circle and out towards you. On a normal driver you don't have those teeth sticking out away from the circle but just the ones that are sticking out towards you.

Sorry if i cant get a good explanation