Kawi 800 vs. Yami 701

[djkorn1]

Madmat and I were bored during a flat day and raced...Both are on -2 lightweight SXR platforms. Matt's on a WDK Envy and I'm on my Trinity EVO... MAtt's got a couple more mods than I do...

My mods:
155 compression
Wet Pipe
Vilder lightened flywheel
Everything else is bone stock including impeller.

Results: Dead tie out of the hole and on top end. :smokin:

 

[The Penguin]

yet you needed 100cc more to keep up.

:biggrin:

 

[Matt_E]

And you used up more gas doing so. :biggrin:

155 compression

That's a mod? I'd call that a defect. Freshen up that bore and get some new rings.

 

[djkorn1]

All true....but I have less mods. Matt thought this would make good discussion. I am not sure about his mods.

I know he has higher compression, a MSD enhancer, Aftermarket impeller, not sure what else...

 

[WFO Speedracer]

Thou art blasphemous and thou shalt be stricken down by an angry mob of Superjet owners.

 

[Matt_E]

Tarred and feathered I say.

 

[yamanube]

I would be curious to see how my similarly displaced stock motor, stock hull, stock ignition, 130psi, wet pipe and 48mm carbs fairs against your setup.

 

[WFO Speedracer]

You mean the DASA designed Power valve 800 motor don't you?

 

[yamanube]

You mean the DASA designed Power valve 800 motor don't you?

Straight off the shelf OEM Yamaha parts, all assembled by Yamaha. Who they used as an outside consultant is beside the point. :biggthumpup:

 

[WFO Speedracer]

Straight off the shelf OEM Yamaha parts, all assembled by Yamaha. Who they used as an outside consultant is beside the point. :biggthumpup:

So you will be running the stock exhaust and intake-carbs then correct,I mean we have to keep the comparison fair right?

 

[yamanube]

So you will be running the stock exhaust and intake-carbs then correct,I mean we have to keep the comparison fair right?

Not possible, I would be willing to bet money the motor made more power with the stock exhaust than the exhaust that is on it now. The stock GP800 pipe was very well designed, of course you already knew that.
Besides Korn doesn't have the stock exhaust on his ski, does that mean he should bring his back to stock? His pipe was at least designed by professionals, mine is a bunch of coffee cans welded together with a battery.

DJ, you going to Daytona?

 

[superramjet]

how you compared actual current weights? we had a light envy in our ride group, thats no so light anymore

 

[yamanube]

how you compared actual current weights? we had a light envy in our ride group, thats no so light anymore

I have seen a Trinity EVO that was not so light anymore also. :shhh:

 

[Matt_E]

His pipe was at least designed by professionals, mine is a bunch of coffee cans welded together with a battery.

WDK exhaust?

 

[yamanube]

WDK exhaust?

Good guess.

 

[rollin5150]

My buddy rides at 2001 superjet and is pretty much dead even with me. Well, that was back before I installed a new prop and pump cone. We have yet to race since. Here is our mods when we were about dead even. Also note that both skis were not fully tuned.

Superjet
Shaved head - half girdle 160lbs compression
B-pipe
MSD endhancer
Hooker prop (not sure of pitch)
Stubby freestyle pump cone
Intake and rideplate are aftermarket
Stock carbs with AM arrestors

SXR
ADA headw/girdle 175lbs compression
Wetpipe with jumper (6 degree advance)
Bored Nozzel to 80mm
Stock prop with freestyle pump cone
TBM intake and stock rideplate
Stock carbs with AM arrestors

 

[MADMAT]

Yea that was interesting and fun for sure.

WDK Envy lite SXR

713 (Wisecos) no porting 185psi.

B Mod

-3 13/16 w/85mm out

MSD enhancer

lightened stock 62t with all jet ski solutions

worked 38's.

I mean we were dead neck in neck tied all across the R's! Super fun skis!

I GPS'd mine at Rock n Ride at 48MPH.

 

[WFO Speedracer]

Now I would be happy to run against you with my 787 powered X2 when I am finished with it,that would be a fair comparison Nube.

 

[yamanube]

Now I would be happy to run against you with my 787 powered X2 when I am finished with it,that would be a fair comparison Nube.

I agree, nearly identical motors (in design). What does it have for mods?

 

[djkorn1]

Not possible, I would be willing to bet money the motor made more power with the stock exhaust than the exhaust that is on it now. The stock GP800 pipe was very well designed, of course you already knew that.
Besides Korn doesn't have the stock exhaust on his ski, does that mean he should bring his back to stock? His pipe was at least designed by professionals, mine is a bunch of coffee cans welded together with a battery.

DJ, you going to Daytona?

Yeah. Take it for a spin. :beerchug: