I've never heard of a 660 that requires case modifications. 685's, yes.
If you're making a 660 out of a 440 case, then they have to be machined...both deck height and to clear the bigger pistons. SLP does case clearance even on the 600s turned 660...not required, but a little safer.I've never heard of a 660 that requires case modifications. 685's, yes.[/b]
What are the stock mains? I know SLP loves to overjet their stuff.I'm glad your having good luck with your 660 setup. I have a SLP 660 kit in a 06 600 Fusion and have not got it right yet. It will not even pull the stock 62 gram weights. Have the purple primary and blue secondary that worked good on the stock motor but will not rev past 8000 now. SLP air horn kit and 430 mains. Runs good low and midrange but falls on its face top end. Not impressed with the SLP kit.[/b]
The big bore 660 makes a lot of sense. Entry level 600's are cheap. Own it for one year and then install a 660 the next. It's a helluva lot cheaper than buying a larger sled. 660's are no doubt the most dependable big bore ever.WHAT THE F? What was that comment for? I was simply asking, why wouldn't you just buy a larger sled if that is what you wanted? I am not going to buy a Sportsman 90 and bore it out to beat an 800. Seems Bass Ackwards if you ask me?
Here's to you Retard.
for such a retarded comment.[/b]
The motor sits lower in the chassis on the Pro-x.The pipe won't be a direct fit.If it can be made to fit it will require some modification.660 kicks a$$. I am able to run 66gram weights with almond spring and pulls 8100rpm. Pulling 141 1 3/4" track I beat up on my cousins 02 xc sp 800 with new motor, geared down, and 1.5" track. My helix upshifts a little faster than I like off the bottom, so its kinda weak off the line but he is even with me for about 2 seconds lol. After 300 feet I am ahead and he doesn't ever catch up. And for you guys that will say his must not be running good, there isn't to many sleds where I live that are much faster. Nobody has extensive mods where I'm from, just gear down and some a bit of clutch work. The same goes for the 05+ renegade 800's. They don't hold up to well compared to mine either. My sled is running the stock carbs and pipe as well. Next on my list is a pipe. Not sure if I should get a carls 660 pipe or slp twins for the 600. Has anyone run a regular edge pipe in a prox and how does good does it fit? Whats all required to put one in? Remove shock tower brace?
All in all the 660 is awesome, very responsive, and you can tell it has a ton more torque than the 600. 95mph no problem with that track.[/b]
Yes, I heard it safer to take about .010" off one side of the case for greater piston clearance.If you're making a 660 out of a 440 case, then they have to be machined...both deck height and to clear the bigger pistons. SLP does case clearance even on the 600s turned 660...not required, but a little safer.
Fenz-I am like these other guys...Not sold on CFI yet. Besides, if you have ever ridden a well tuned one, you'd understand.[/b]
I regularly walked well setup VES 800s with my older VES660 in my ProX. My new Fusion setup is definitely faster. Do I think it's 150hp? No, but it is definitely more than 130. They are certainly not the end all, be all motor...but my two have been more than fun.i have an 02 edge with carls 660 in it i see the postings of 150+ hp i really dont think they put that much out maybe in the middle 130's tops i have most everthing done to mine 64 gram weights flo rights larry rugland single pipe v force reeds reed spacers team roller big air horn kit and i dont think i get that much out of it i was hoping 135 maybe but it runs really strong i can see 110 on speedo =108 on the gun geared down 23/40 on good hard packed ice combo. but it is a hell of a ride in the woods can stay even with a 03 800 xc up to 1000 feet never ran farther than that so dont know how long would have stayed even but it turns alot of heads when your right there and they cant get away from you they look a little dissapointed in theres sled i would do this kit again just to have fun with those bigger sleds up to 100 my 2 cents[/b]
I had a few more impromptu races this year and also met up with edge700 to see how the 2 660's stacked up. Overall, his 660 will pull mine by about 2 sleds right off the start and that is pretty much how I THINK it would stay with equal weight riders. I am 230 and he probably has 50+ lbs and 4 inches of height on me so it is hard to gauge with the weight difference, but whatever sled the smaller man was on, was ahead. (weight). Top speed was pretty much a dead run with both sleds hitting 101-104 on the lake that day. Overall it was a great time and nice to get out and compare sleds. I ran as high of octane that I could throughout the year and sometimes that was 87 and I have had no problems. I was averaging the same gas mileage as a normal 600 .... 10-11mpg. For the money spent, it was worth it. I mostly ride with bigger cc sleds and I am ready for a CFI, but I wanted to stay Polaris and still wanted more than a 600cc has. You really don't notice any thing different than a stock 600 until you ride with one. Then it becomes very noticeable that you have a power advantage. Overall, 2300 miles and lots of fun and no problems.[/b]