Fuel Range for the 4 Stroke SJ

[Mobile Chernobyl]

A few buddies and I were wondering what people are seeing in terms of real world mileage for the 4 stroke super jet. Not in a racing scenario but "exploring the lake/river" scenario.

We typically explore lakes/forks and rivers/tributaries and have a small fleet of superjets. We can easily do 27-30 mile rides as a group between refuels and some of our skis are efficient enough to get 40+ miles out of a tank jammed full with 20 liters (5.3 gallons) of fuel without running out. Surprisingly the best setup seems to be a ported 760 (top and bottom end) running 38s with a 10/16 hooker and mag pump - we are comfortably getting 35-40 miles on that setup on 2 of our skis.

The 4 stroke superjets with a tune and handling mods seem to be something we might consider down the road and we were wondering what people that track their rides are seeing in terms of mileage (both stock and modded 4TSJ's would be interesting to know about).

 

[eastbay]

i do not have technical info but these skis seem to get great millage! plus remember you can just pump gas straight into the ski off the dock. For me these are the ultimate REC/FUN ski...Id also like to see who have tracked actual miles.

 

[Big Kahuna]

Taking my 4S to late tomorrow to see how fat I can get with it. Will be tracking ride with my watch. (Gps)

 

[Big Kahuna]

The fuel light started flashing and rode 5 more minutes. So, about 1:15 mintues on a tank.

 

[Mobile Chernobyl]

Awesome! Look forward to more feedback. Seems on par with a dual carb 2 stroke SJ, which is a good thing, we definitely wouldn't want less cruising range!

 

[Batteryman]

Interesting findings! I was wondering if a 4 stoke SJ could get me further on an adventure.

 

[glenn240]

The fuel light started flashing and rode 5 more minutes. So, about 1:15 mintues on a tank.View attachment 447872

Kahuna - Is your 4S stock? or modded? I would imagine the Riva ECU reflash, etc, would have to affect mileage considerably

 

[glenn240]

Kahuna - never mind, looks like you just have some handling mods at this point. Posted that before I read the thread about everybody's mods..... yikes!

 

[Big Kahuna]

Kahuna - Is your 4S stock? or modded? I would imagine the Riva ECU reflash, etc, would have to affect mileage considerably

Just has the Worx Exhaust hose. Would not think this would effect anything. I had several long pulls of throttle getting some top speed runs then late in ride started slamming turns, this would have eaten some extra fuel.

 

[Big Kahuna]

35 miles today burned about 3.5 gal. Added 3.6 this morning before. Nice reserve amount there. Road for 1:15 minutes today also...

 

[Mobile Chernobyl]

35 miles today burned about 3.5 gal. Added 3.6 this morning before. Nice reserve amount there. Road for 1:15 minutes today also...

10MPG ain't too shabby! Do you think it would get better or worse with the Riva tune?

 

[Big Kahuna]

 

[Big Kahuna]

10MPG ain't too shabby! Do you think it would get better or worse with the Riva tune?

Hard to say. this "Tune" stuff is all new to me. But if you find a good cruising speed, I doubt the tune would effect it to much unless you were hard in the throttle. I was just easy cruising.

 

[eastbay]

Thanks for info BK!

 

[MTRHEAD]

When we all go out chasing each other a full 760 Lites superjet and a new superjet with tune seems to be real close on fill up amounts when we return to launch. This is chase the leader style riding with about 8-10 of us. Lites and 4S have to get fuel at same time.

 

[IceRocket1286]

When we all go out chasing each other a full 760 Lites superjet and a new superjet with tune seems to be real close on fill up amounts when we return to launch. This is chase the leader style riding with about 8-10 of us. Lites and 4S have to get fuel at same time.

Stop by sometime!