I feel like the 660engine would last longer than the typical 800 engine
Carls Cycle 660!!!
- Thread starter sledhead_79
- Start date
How'd that 600 handle bangin' ditches in ND for you to form your opinion? Or was it on the 2-3 trips a year you go to the Snowies and pound tracks at Marie?
You really have to ride one...
In short, it revs like a blender - kind of like a 125 two-stoke MX bike vs. a 250, feels very light, and is playful. If you like to challenge yourself and are a decent rider, you can hang a beating on the other stock 800 pilots in your group, and have more "fun" doing it on a lighter, more nimble sled... just go ride one and you'll figure it out.
Unless you ride one, you won't "see it'. I've had 800's for years, and a few big bore and boosted sleds (my current ride is an EVO equipped M1100T). Does the 660 have the torque of an 800? No. Will it keep up to an 800? No problem, unless your riding is at 10,000' doing straight up chute climbs. The fact that it will go toe to toe with Cat's 800 HO (which has a "bit" more snap then the Polaris 800) is impressive in itself. Anyone who thinks the current Liberty 800 in stock form will hang a beating on a Cat 800 HO has been drinking too much poo-lade, or the rider on the Cat can't ride. That said, it isn't a sled for everyone - most riders depend on the torque of a sled to get them out of a bind rather then depending on talent - my wife has embarrassed more then a few guys on the hill (funny what 20 yrs experience will do for ya). She chose the 600 platform simply because of the 800's poor track record of reliability, and the lighter "feel" (She tore her rotator cuff before the 2013 season, so wanted a lighter sled).
In short, it revs like a blender - kind of like a 125 two-stoke MX bike vs. a 250, feels very light, and is playful. If you like to challenge yourself and are a decent rider, you can hang a beating on the other stock 800 pilots in your group, and have more "fun" doing it on a lighter, more nimble sled... just go ride one and you'll figure it out.
Yeah, I've ridden several.
Ever figure out the clutching set up for out in cooke?
Just got done looking at the Primary clutch for ya. Black spring #7043342 140/330 with 60 gram belly busters. Pulled 8150 rpm at Cooke over the weekend. Ran great at Cooke City, Big Horns, and also Snowies.
Last edited:
V
volcano buster
Well-known member
What secondary is run on these newer 600/660's?
I've got a 2010 with the P2 secondary and run the black purple spring with a Switchback helix.
I've got a 2010 with the P2 secondary and run the black purple spring with a Switchback helix.
Well after a few years of debating another 660 build I decided to do it, picked up a 2012 rmk 600 and will be sending the motor to carls cycle for the 660 kit along with the case porting, clutch machining and balancing. Cant wait to line it up with my 2011 pro 800 and see how they compare, the last 660 i had was in a 06 rmk 144 and that sled was just a blast to ride, my 09 assault didn't even come close to catching the 660. I will post my complete setup in a few weeks when i get all the parts back 
its a extra 350 for the case porting. Chris didnt say any numbers but said it will definitely make a difference with them opened up. so I said what heck might as we give it a try.
Please be sure to post the results of your new motor. I am very seriously considering going to a 660 next year from my XM 800. (I have absolutely no complaints about my XM, just thinking I might want to try the 660. I have heard they are a blast to ride.) I have heard nothing but good about them and the more good I hear the more likely I am to make the switch next year.
Yup I sure will, I will probably start a thread of all the mods I am gonna do to the sled along with reviews of the products.
V
volcano buster
Well-known member
Update or build thread?
motor will be done next week. I will update as soon as it comes back.
