[M7-Dave]

With how rich the 800s are from the factory, and other little quirks that aren't worked out, the 700 is still faster out of the box.

Cat put the same clutching in both sleds, that tells me it makes no more power.

 

[M7-Dave]

I have two friends on the forum that have Crossfire 8s and we do all our riding together. We all fall withing a half gallon of fuel per fill up when it comes time to top off over 80-90 miles. yes, my sled uses a little more, but it also doesnt burst into flames when you shut it off.

 

[M7-Dave]

Both of them had their 800s catch on fire at the same time simutaniously. It was pretty cool.

Dealer sent their ECUs to cat. Now the sleds are incredably rich off idle, and still pop and catch on fire when you shut it off. They wish they never sent them in.

I have no idea how a builder could go from the 700 laydown with such a great reputation for power and reliability to what they have now.

This is not even mentioning performance.

 

[M7-Dave]

That is what I meant, if the primary is the same (weights and spring) then they aint making no more power. The same setup will put the same load on the motor, the clutch doesnt know what kind of engine it is bolted too.


The engines make the same power, and unless you plan on climbing all your hills and doing all your racing at 6000 rpm, 140hp is 140hp.

Quite honestly, I have zero performace issues with the 10.0 clutch that is on my sled, seems to work just fine when running next to the 07 800s Im riding with. Matter of fact got to watch them both swap out their belts this weekend and Im still riding on my origonl (all the sleds are within 100 miles of each other, and have been ridden down all of the same trails, we do almost all are riding with each other)

I think the 800 is a fine engine, but after watching bkuku's and his brother's burst into flames, send the ECUs to cat, and the answer was a ton more fuel and retard the timing off idle, goes to show their faith in how it will run.

My sled isnt stock, but for the $$$ i have invested I am still way ahead of a new 800.

 

[M7-Dave]

Also on the 10.4 clutch yes cat changed the spring, but that is cause the new secondary helix needs a longer spring, the old spring was to short.

Same start and finish rates as the sping in the 06's. Same Helixs, same gearing. the 07's have a tid bit more lower initial gear ratio than the 06's.

 

[M7-Dave]

Did not know, so, it has a smidge higher gearing on the big end, negating the effect of the bigger clutch.