This is my 1976 Arctic Cat Cheetah I'm building. It had a Suzuki 500cc Spirit F/C but I replaced it with a 1985 Formula Plus 521cc L/C. I figure about a 50 horse power increase!!lol I still have a lot of work left to do but i have drove it around the field. I'm building a aluminum gas tank for it now..Have plastic skis to put on..with wideners. 94' Mach 1 Seat...Going to cut and modify the exhaust to fit in the belly pan and have the canister coming out the bottom and the Cheetah hood will fit over the engine once again. Oh and cut the windshield down. Other than that I just hope the track and everything else takes the torque... Here's a link of it running...
I'm hoping I can jut it where it starts to turn outside of the belly pan and then rotate it so that it turns back into the belly pan. Then I can have the stinger coming out the bottom of the belly pan instead of hanging out side of it. It will catch too much junk like that lol. We had about 1" of snow here sunday but I was working and didnt get to try it on the first snow fall...lol. On the grass though it is a rocket. It might just spin like crazy on the snow...I don't know yet....The aluminum tank looks pretty sweet...I just have to cut it to cit around the coolant lines and put a gas cap on it and its ready to go.
Reminds me of my first sled....72 Cheetah 440 that had a 436cc Kawasaki in it. I remember racing a (at the time new) 1995 380 ski-doo and beat him pretty bad. I was impressed that the old tank still had it.
Awsome..I actually have one of those motors. It came with the sled as a spare but it had the 500 suzuki spirit motor not the older kawasaki motors. Its missing the carb though. Pretty much junk I think. It certainly won't compare to the 521 Formula motor!!
Heres some new pictures. Built the new tank, put on plastic skis off a 94' mach 1, hooked up the headlight, tach and temp. gauge. All thats left is some leather for the seat, make the exhaust fit under the hood somehow and fix the broken cleats on the track
The drive train will handle it OK, but use the threaded cleat bolts instead of rivets to put the cleats on with. Also, you will need some acceleration claws for that.
Yea I'm going to put the bolts rather than the rivets definately. I've been looking for those claws for it. Can't find any..Royal Distributing doesnt have any anyway. I've got 30 or so carbide studs to put in it. That should help it some. I dont want to put a too many so it doesn't rip the track or cause any more damage than the motor will lol.
Here's a link of it running...
Linear Mode
