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Actually if you can download the 99 Ski doo race manual it has lifesize pics of all the rotary valves. You can just lay yours over the picture and mark how much needs to be trimmed off and grind it down. Thats what I did on mine. The shorty cover was only used on the MXZX race sleds, but I've...

My question is, how is the little 488 fan cooled engine going to pull a 151" track? I ran a 87 Phazer back in 91 and took it to Revy with the stock .7" 121 track and got around Boulder and Frisbee, but we weren't doing any extreme climbing by no means....lol . It was late season riding and I...

I just picked up a 97 Mach Z and it pulled 120 psi across the board. I think .050 is the minimum recommended squish, for pump gas anyway. I wouldn't go with a thinner base gasket, have the head milled instead. Do you still have the oil injection pump? There are a few horses to be gained...

Can't Dale chime back in....I like looking at his avatar :) Merry Christmas Everybody:)

I phoned a friend and got the specs. They ran 380s....I can't believe they were such big jets. The 98 ups only run 300s. I put somw 320s in it and will keep a close eye on it before any real pulls. I found several spot that I could download the whole spec books but I'm on dial up :(

I just bought a 1997 Mach Z from North Battleford Sask and it didn't run at all like it did when I picked it up. I checked the elevations of Rimbey and North Battleford and Rimbey is 3100ft and N.B. is 1800ft. I checked the mains and it has 360s in it. My Ski doo race manual is from 99 and...

I like the bait trailer idea, it's probably the same fawks doing this every time out there. I think when I go back I'll be sleeping on my sled.

Welcome aboard...those old Skiroules were awesome. I remember my uncle having a 440. It design was years ahead of everybody else.

Welcome aboard, what do you ride?? that sounds dirty lol....or maybe I'm just tired :)

Yep they can hype up the fight all the want, but Koscheck isn't in the same league as GSP. The only way Josh can win is by a lucky punch. I say the ref stops it in the second round as GSP is kneeing Koscheck in the sides like a rented mule....lol

Heres a couple of my mud toys

No I do care, I find that interesting history isn't all bad...lol Thanks for the warm welcome everybody, thats about the only warmth lately :) I just got in from a 13hr day of steaming

You bet, I think I sledded with you and Mandy and Phil out at Medicine Lake way back in the day.

Hey all, I've been on here for awhile but thought I should finally say hello. I havebeen out of sledding for about 7 years due to kids and family but hopefully this winter I can do some sledding around home if mother nature is good to us. I'm a Ski doo guy to the core, I have owned 3 in the...