P
Does anyone know what the correct maximun rpm for a 03 900 1M MC is?
03 Mountain Cat 900 1M RPM
- Thread starter powdercrav
- Start date
K
The peak hp for a stock 900 motor is around 7500 rpm but with twin pipes they wana spin around 8200 RPM so I dont think you would wana go any higher than that
H
I agree....a good aftermarket single you should be arounf 7800-7900 or so. I don't think they have a rev limiter either if that is what you are asking...
P
my sled is totally stock not even a pipe though i am thinking of getting a single. Right now it runs at about 7300-7400 so i guess i should throw some lighter weights in thanks
H
I would try to get a couple hundred more RPM's out of it if you can. Also, keep in mind that Cat tachs are notorious for being about 200rpm high so you may be turning even less. You should look into having your tach calibrated or just borrow an Avenger II/III or similar unit that can meausre your RPM's off of your lighting coil pulses and compare. Then you will alwys know what your real RPM's are based on what your tach is reading.....
Here is a dyno chart from SLP that shows stock vs several other configurations....
Here is a dyno chart from SLP that shows stock vs several other configurations....
R
go up one more hole in secondary and you should be fine.
If you are bone stock, you are right on. 7300-7400 rpm. That motor doesnt have to spin a million miles an hour to make power.
H
Rpm
Replace your primary clutch spring, and your secondary. Run everything like that before you throw lighter weights or adjust your secondary.
Replace your primary clutch spring, and your secondary. Run everything like that before you throw lighter weights or adjust your secondary.
7
second replacement of the secondary spring!!!
My 03.5 turned 7300 stock all day long, With a can I was told it would turn 7400, And it did exactly that! SLP has two different graphs that show stock BHP, One is the one above and the others are on the single and twin pipe. These graphs show peak @ 7300 max. and by 7500 your down about 10 BHP. I have a funny feeling that the graphs above make the single pipe look better in the low and mid range by moving the stock BHP graph out by 200 RPM. Now the question is which BHP graph correct? On mine I also installed HI torque rollers, Made the track more efficient to turn and lightened up 40+ lbs. Last season it turned 7500-7600, So i will either install heavier weights, But will try the new spring in secondary first.
Mike
Mike
