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Is the 840 better and more reliable than the 860 big bore?

Yup new gates belts. All new spring rollers weights. And jetting has been changed for the warmer weather we are having now. The secondary spring is in hole 2 like factory spec but going to hole 3 make a difference? I think is more than that but I'm will try it for sure.

My centurion has been going awesome but I have a major bog when you get on it from dead stop in a drag race. I have put the clutching all in factory spec and good alignment. I cleaned the carbs extremely well and synced them also. It helped it out a little bit but still bog! is this something...

albee, What about gear ratio and clutching? It has a big low end bog but I think its the clutching

Thanks Brock!! Cant wait!

Its for my 16 pros ltd

Any good setups for 660 drag race. Sorry its kinda last minute. I was just wondering who did what for a starting point.

Trails are great up here boys! Come on up north and ride! We are getting 6-8 inches of snow tonight. And don't forget to buy a membership at our local clubs!

Does anybody have any good 1000ft setups for this baby in the memory bank? The local snowmobile club is having some races and I would love to show the vintage class who is best!

Wow this old centurion is awesome! I love the sound of the old triple. I may right it stock for the rest of the season and next season comes the triple pipes!!!

Its a 1980. Sleds mint condition. I bought it today.

Anyone out there run one? And how did they perform? I have a chance to get a good one for cheap. And also how did it do against the competition?

That's it. I'm only turning 8100-8200. And the thing is that that what it was turning before.

Well this week I installed the bikeman pipe and pc5 from DTR. Jeez I had 1.74 ratio with 10-70s and 120-310 primary and 50-44f with 140-200 secondary. So I thought the pipe and map would of made more power so I rode it with the previous setup thinking that I would have to better tune the...

So what should I be looking for then?

I purchased a gates the other day and when I put it on it was to tight in the clutch. it would squeal and sometimes take off by itself. If I shim the spider it should be all set right?

No just 68 EPI weights and the rpm is at 8200-8300. I geared it 1.74 right out if the crate. But with gaining on him in the top end do you think the 1.68 is better?

Its a pro s limited. Cobra track.

Yes Doc, fast trails for sure! We hold it wide open for long periods of time. I have the 50-44 helix with 140-200 spring. I geared 1.74 like suggested but that cat pulls so hard in the mid its crazy. I was catching back on top.

Ok PoPo, I'm going to run the baby a bit more.