Anybody got any info on how to make these fast yet??

 

I'm bumping this to the top I would like to know the same

 

well lets BUMP it up!!

 

Hehehe, hey guys, like the song says, “I’m built for comfort, I ain’t built for speed.” I don’t know why you want to go faster unless you plan to make it street legal. Mine goes plenty fast enough to get into trouble. You could add more grunt with some clutch mods or try tuning the EFI up some with a DynoJet Power Commander (dubious results there). Other than that you can remove weight from the machine/tires/wheels to get some minor gains. Improved breathing (intake and exhaust) will get you some power. There just aren’t enough of these machines out there, and folks wanting to modify them for more speed, to attract the attention of go-fast accessory manufacturers. Now, if you want to make the machine more comfortable to drive, have the option to light your low and high beams at the same time and read you coolant temp from a gauge in the dash, click here.

 

The Ranger engine has been neutered by the factory and it can be improved. I also think the clutch gearing is a little high and it doesn't downshift fast enough. I ride mine for about two miles on the street to get to my favorite dry river run.

Go here for a discussion of Ranger mods...

http://utilityoffroad.com/forum/forum.asp?FORUM_ID=11

Here are the mods:

1) Put on the white clutch spring which is a little stouter than stock. I will bump up the engagement RPMs but about 200 RPMs and get your motor into the powerband sooner. Others go for an even stiffer spring which bumps the revs up to 400 RPM from stock.

2) The stock 60 gram clutch weights are too heavy and get the ratio climbing higher and faster than the muted engine should allow. I had 55 gram weights put on mine. The combination of the white spring and the lighter weights mean my XP climbs to RPM (~4,500 RPM) faster and stays there as the Ranger accelerates to the rev-limiter. Another bonus is that the clutch will also "downshift" faster when you are going into a corner from which you want to squirt more power when you come out of the turn. For some reason, a few folks will go up in weight. This is a bad move unless you've modded the engine to produce more power.

Both clutch mods should be under $100. Cheapest mod you can do. And your best bang for the buck.

3) More power: Three things (two reasonably affordable, one a bit pricey) can be done.

a) more fuel -- (PowerCommander, or Dobeck TFI), both about $225
b) more revs up to 6500 from the stock's `6,000 (my measurement) swap the ECU from the 700SP quad. $299
c) swap the cam out of the SP 700 quad or maybe a "Hotcam." Maybe $550 for cam and labor.

I'll add d) look at your throttle plate. Odds are that a fully depressed gas pedal won't fully open your throttle plate. Mine was opening only 80%. Another's was 70%.

Currently I have the clutch mod, the Power Commander as well as the throttle position sensor ($120) from the SP 700. It is said that the 700XP TPS from the Ranger doesn't send a "go faster" signal toward the end of the throw. Jury is still out, but my throttle behaves differently. With these mods, my Ranger still rev-limits at 6,000 and 44.5 mph (GPS), but it gets to top speed in just a little over half the distance. Trail performance has improved too (I have some favorite high-speed sections with fun turns). Also, before to maintain top speed just under the rev-limiter, I had the pedal almost all the way down. Now I have to back off the throttle to about 1/3 (not 1/3rd from the floor, 1/3 total).

Anothe peculiar thing I noticed with my stock Ranger. Top speed with pedal mashed was 42. If I backed off the throttle about an inch or so, I could feel an acceleration. I measured the speed increase to 44.5 mph. I'm guessing that was the TPS, since it doesn't do that anymore.

Next week I'll add the SP ECU which should give me the extra revs, as well as a more aggressive spark advance (especially above 5500 RPM where the stock Ranger begins to retard the timing to ease into the rev limiter).

After that, my last mod will likely be the cam in a few months. I don't know whether I will go with the SP cam (it has more lift and duration, but no overlap -- it is still a smog cam), or go with the Hotcam, which might be designed to be efficient at RPMs above my normal operating range.

I hope this helps.

Rick

 

This is what I Expected. Someone modding a Ranger,cool you can never have enough.Keep it comingI know there is more.