Need help '03 Mountain Cat 900 Setup

[delbertdiggity]

Going out west in a week need to know a good setup for 8,000 to 10,000 feet.

'03 Mountain Cat 900 162" Holtz rear Suspension
The "thing" can
boysen reeds
k&n air filters on carbs

Need to know:
clutch weights
jetting
rpm?

Was told at my local dealer the 900s should run at about 7,300 to 7,400 rpm
with 64 gram weights, green yellow spring in primary, and a different helix.

Figured there would be some guys on here that have had alot of time get get this "old school powerhouse" dialed in good. One more thing should i leave the track (attack 20) on with paddles pointed forward (looks like it should be flipped around) heard guys sayin leave it in cold weather powder flip it for spring heavy snow.

Some info would be much appreciated Thanks!!

 

[Track Poacher]

I am running an 04 KK with the following set up.


320 mains, this will likely not work on yours since it has the pod filters.

Low altitude needles in 2nd leanest position, sometimes I go full lean if it is bogging on exhaust side. Again this may be too lean for your air filter situation.

69 gram weights

Yellow white primary spring

53/51 helix with stock secondary spring


Works like a charm. I have been running this for 3 seasons now. I have about 600 miles on the last belt and I ride it like its stolen. The primary spring will raise the engagement a little but it works good with the 69 gram weights! I have my track in Hill Climb position all year long and never have any problems except braking can be a little scary. PS. Make sure you shim your secondary so the belt deflection is spot on. I think I am running 1 thin and 1 thick shim in the secondary. When I pick up the tail of the sled the track starts to spin.



Regards,
Poacher

 

[SHMO]

Poacher, are you running this setup at 8-10,000 feet? I just sounds a little steep to me for higher elevations.

SHMO

 

[Meatman]

jet up 3 sizes from stock and check it out, also need to jet for temp to so itll be a guess and check ordeal
I run the green snopro in the secondary on the second tightest hole.
straight 53 helix is what i got and love the hell out of it
cant remember right off hand what im running for weights
i run around 7800Rs remember the cats tach is about 200 off