in my pictures

 

Should we show them what we can do with porting and compression with your modual Dale? LOL
Ray

 

Reds,
You mention above that one of your mods was to move the postion of the stock cams to retard the timing 10 degrees. I believe this mod is the same position that the V Force cams come stock. That being the case, does this mod result in moving much of the power band from the low-end to mid-range? If not, what kind of improvement does this mod do for the P650?

Any comments would be appreciated!

 

The two machines that reds650 has modified (his own and one other) are now the local drag race kings. If your sport/utility ATV isn't running nitrous, you had better leave it on the trailer.

 

mikey, retarding the cams dosen't really move the power band (because of the CVT) it just makes better power everywhere. The potential of that little engine is there. I built one this summer, same as Reds's but with ported heads and a little more compression, made 42rwhp and ran 5.9 secs in 300ft, just did another this week with 45.76rwhp.
Ray

 

no useable power is lost at all
ray porting seams to be worth 4-6rwhp[img]i/expressions/face-icon-small-cool.gif[/img]
but mine is not ported [img]i/expressions/face-icon-small-frown.gif[/img]
it's the same as the v-force cams

 

maybe ray could show us my dyno sheets (i finally got an account)

 

is that the one for the 660[img]i/expressions/face-icon-small-blush.gif[/img]
or the p650[img]i/expressions/face-icon-small-wink.gif[/img]

 

Ray, or anyone, what type of porting is being done - a simple port/intake/exhaust blending or something more complicated? (After I get reds650 to do my valve timing, I may break out the Dremel,LOL).

 

Is 10 degrees the most you've tried??

Good job!! You guys must have a lot of time on your hands, is everyone from Nova Scotia fast??

Scott, you need a dremel and epoxy...lol let me know how yours works.