120 mph, stock 96 Vmax 800 2000 ft, reasonable goal?

A

acauto

New member
I have a stock 96 Vmax 800 with 5200 miles. Was doing some testing on the lake in front of my house. Stock track with 96 picks, new 8bu belt, near perfect conditions gray ice with patches of snow. Running 8200 rpm eventually with about 2000ft to run WOT and safe distance to slow down beyond. Ran over 120 mph om the "dream-o-meter" and it was about 20 degrees out. Waiting for the parts I ordered to go with Yammie's trail clutching so this is a base line. I know i am looking for 8350 rpm and should get that dialed in with the helix and springs. Sunday tried to get a "real" mph by strapping my GPS to the handle bars. Weather warmer 33 degrees and the snow and ice a bit stickier. Ran 120 on the speedo and 109 on the GPS, seems about right. My 04 Viper ran 109 mph on the speedo and 98 on the GPS, so I feel the GPS is fair. My goal is to run 120 MPH in 2000 ft. with a stock Vmax 800 that has been well tuned in every way. Wont be able to do everything this year but I am looking for advice. Am i setting a reasonable goal? Keep in mind I don't expect to run that in all conditions just when everything is just right. planning to change the skid next year. Trails here are groomed and usually hard packed fortunately and besides I usually ride my Viper E/R-S trail riding, so my skid choice would lean towards lighter weight and less rolling resistance. Also looking to improve weight transfer, anything help with the adjustable front struts? or is it all in the skid? I am carrying the torch for the vintage iron in south west Maine and have the best minds here and the Vmax4 forum to draw from. It is only a matter of time before one of my buddies or a stranger shows up on my some what private lake and i want to be ready. I view many of the new sleds as Subaru WRX's and Mitsubishi EVO's and i want to be the guy who pulls the 70' Hemi Cuda out of the barn to show them how it was done and still is! Thanks.
 

There are several speedometer apps for your phone that will record top speed so you can concentrate on driving.
 
Finished the clutch set up, redid the carb vents into the air box, glad I did that as I also removed the white plastic clips while the air box was out. Found the outside bowl vent elbow and tube missing on the PTO side carb? Not sure how that may have effected the performance? Should I have to alter the jetting at all? Normal temps here 10-35 degrees.
 
I thought I had read somewhere that Yamaha designed the vmax to slightly pressurize under the hood at high speed, thus venting the carbs externally slightly pressurizes the float bowls enrichening the mixture. Venting them into a low pressure area should lean them out.
 
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