2002 vmax over rev

[longtrackman]

I have a 2002 vmax that has a bad over rev to 9100. It is stock.What do I have to do to the rivets or springs to slow this down? I also have lost 20kph topend.

 

[Turk]

What size v-max???? 500, 600 or 700??????

 

[Ike]

I had same problem in my 600 vmx. I hunted problem for two weeks, changed weights and everything. Secondary sheaves bushes (at helix and other plate) were worn so it didnt let belt go deep enough and that why belt was too low at clutcth and engine overrev. How much is you sled driven.

ike

 

[longtrackman]

It is a 700vmx with about 5000kon it

 

[Turk]

Install a new belt; that will bring rpm,s down a lot. See what rpm,s are after the belt change; no sense to add weight till you know what rpm,s are at. Worn belts can really raise rpm,s.

 

[longtrackman]

I have a new belt on it . It has always had an over rev but it is getting higher.

 

[Turk]

Run a 4.5 gram rivet in the inner & outer holes in the weights. That will bring rpm,s down a bunch.

 

[Mountain SXr]

over rev

Whats the normal max rev on a 2000 SXr 700? I'm hitting 8900. I've just installed tripple aaens. The aaen instructions included a dyno chart that shows 700 motor with pipes reving up to 9500 RPM. Seems kind of high?

 

[98srx6]

You want your sleds max rpm's to run at the max hp on the dyno chart.

 

[Mountain SXr]

Max Rpm

That sounds right then. The dyno shows 135hp at 9000 rpm. My sleds running just below the 9000 mark.