Is It Fixed?

[mountainhorse]

The question, and topic of this thread is... Is the Polaris CFi-800 showing major issues in 2014?... NOT "What is the history of the engine in years past?".... at least that's the way I'm reading it.

I have Not seen a lot of 2013 and zero 2014 piston and/or cylinder failures on stock sleds.

Time will tell.




.

 

[OuraySledder]

The question, and topic of this thread is... Is the Polaris CFi-800 showing major issues in 2014?... NOT what is the history of the engine in years past.... at least that's the way I'm reading it.

I have not seen a lot of 2013 and zero 2014 piston and/or cylinder failures on stock sleds.

Time will tell.




.

Three bad ones in this thread alone.....


I sincerely hope you optomists are correct as the owner of a '13 Pro. I bought it knowing a top end was probably coming my way after the first season. If you catch it before the pistons fail it is a cheap fix. It was a risk I was willing to take to get the Pro chassis.

We should not try to down play the problem. It SHOULD hurt Polaris sales, right up until they decide to make it right.

 

[OuraySledder]

I have 3100 miles on my stock 800 sled and engine. I installed a vent kit, always warm it up, turned up the oiler a bit and it is still going strong! Great sled so far!

There is a HUGE difference between 3100 Minnesota miles and 3100 mountain miles. I do not now of ANY decent mtn sleds, ridden hard, that go 3000 miles without needing a top end. It is just too hard on them.

 

[kiliki]

The question, and topic of this thread is... Is the Polaris CFi-800 showing major issues in 2014?... NOT what is the history of the engine in years past.... at least that's the way I'm reading it.

I have not seen a lot of 2013 and zero 2014 piston and/or cylinder failures on stock sleds.

Time will tell.
.

^^^ Same story every year "My new car doesn't have a problem" Need the report at 2k this will tale the tale.

 

[LPIdaho]

So that explains why the fix kits consist of PISTONS right? Maybe a little more research will lead you to the truth.

Most of the "fix kits" shim the cylinders to create more crankcase volume and reduce piston rock through geometry and using a taller piston. If you put the stock pistons back in the engine wouldn't even run so this isn't really relevant.

 

[mountainhorse]

 

[OuraySledder]

Most of the "fix kits" shim the cylinders to create more crankcase volume and reduce piston rock through geometry and using a taller piston. If you put the stock pistons back in the engine wouldn't even run so this isn't really relevant.

Fix kist do not include new cylinders thoug do they? That was the contention of the other poster, that cylinders being out of spec was the real issue. Even with the spacer in some kits, cylinders are re-used as is... because PISTONS are the problem.

 

[mchilcutt]

broke in my 14 800 pro on Thursday!! What an amazing sled going from my 08 700 dragon!! 3 yr warranty on this pro so im not worried. just gonna go out and ring her neck in the deep Utah pow!!!! My buddy killed his 13 for 2,000 miles last year all on the same quick drive and primary drive belt never missed a beat and it was all hard core mtn miles this guy is not nice to his sleds and weighs about 210lbs!! My theory is do the suggested break in, let it warm up and on super super deep days with no bottom you need to know there are limits on what a 2 stroke motor can take. I have been wrenching and riding 2 strokes for 30 yrs and they will break. I still think the 97, 98, 99 700 poo motor was and still is bullet proof.

 

[papafinger1]

There is a HUGE difference between 3100 Minnesota miles and 3100 mountain miles.

that is a pretty bold statement to make. If I road my pro as hard as I wanted to in mn the chassis wouldn't last a year. Hold any 2 stroke wide open for 50 miles on a groomed trail with sketchy conditions and see how that motor holds up. I log as many miles out west in a year as I do in mn and I believe that I am harder on my sled in mn than out west. Sure if you are trail rider and that is all you do then yes 3100 miles may be easier than out west but then those guys should be riding apex 4 stroke trail sleds with all the sit and steer bells and whistles. For those of us that ride in mn and out west we treat mn like a traininng course in preparation for the riding we want to be doing out west. Imagine yourself riding in a snow rose event. That is how the guys that ride out west also prefer to ride in mn. We are very hard on our machines and can't stand trail riding. A lot of us have 2 sleds. 1 sled in mn that can handle the over all brutal hard hitting abuse ka sled will take in mn and another sled designed to ride in the mountains. Certainly still rode hard and pushed but one capable of handling the snow degree of steep and deep we hope to face out west.

 

[geo]

A lot of "experts" say there is nothing in their opinion better yet than the stock pistons. Indy Dan, SLP, FTX are some. 2 add power with everything including porting if requested and say check or replace at 1000 to 1200 miles, one resizes (and I'm pretty sure some other things in the jugs too) and says ride all you want for 3 yrs.
Some "experts" have made new pistons. Most use a shim ( maybe all now) with a taller piston for more support. They give you bore specs to check (???) and resize "if necessary". None "commit" to how many miles until replacement. It is a "high performance" 2 stroke you know lol.

I'm not an expert but I am experienced lol. My pistons did not collapse on my '13 in 1721 miles. My rings and lands did WEAR out because of poor chamfer. My bore was out of spec but a better fit for the forged pistons in my kit. I added oil and fuel from day one. Even with more Pros out there than the other brands in recent years there seems to be less "how to fix" threads.

IS it fixed? Need the "experts" to tell you that. But if it ain't broke,,,,.

 

[BigMan]

broke in my 14 800 pro on Thursday!! What an amazing sled going from my 08 700 dragon!! 3 yr warranty on this pro so im not worried. just gonna go out and ring her neck in the deep Utah pow!!!! My buddy killed his 13 for 2,000 miles last year all on the same quick drive and primary drive belt never missed a beat and it was all hard core mtn miles this guy is not nice to his sleds and weighs about 210lbs!! My theory is do the suggested break in, let it warm up and on super super deep days with no bottom you need to know there are limits on what a 2 stroke motor can take. I have been wrenching and riding 2 strokes for 30 yrs and they will break. I still think the 97, 98, 99 700 poo motor was and still is bullet proof.

Yep, although some of these guys will tell you you're FOS. Oh well, I was a know it all kid at one time too.

 

[Carlos Randolph]

Good grief......

All the guy want to know is if the 13-14 motors are holding up better than the 11-12 version. The answer to that question is yes.....are they perfect....no.

Did Polaris do some things to make them last longer in the 13-14 version.....yes. Should you still turn up the pump...yes

Does the 13-14 motor "need" the "fix".....Hmmmm.... internet hype aside, most peoples complaints on the 13-14 sleds are directed at the shocks or belt drive, not the motor slapping it self apart. Not even in the ball park complaint wise compared to the 11-12 concerning the motors tearing them selves apart.

Is any thing 2smoke related ever perfect.....no

I take that back, 05 rev 550 hair dryer, 12000 flawless gas/oil/go miles, til the crank bearings finally gave up....that's as close to 2stroke perfect as it gets.

 

[OuraySledder]

that is a pretty bold statement to make. If I road my pro as hard as I wanted to in mn the chassis wouldn't last a year. Hold any 2 stroke wide open for 50 miles on a groomed trail with sketchy conditions and see how that motor holds up. I log as many miles out west in a year as I do in mn and I believe that I am harder on my sled in mn than out west. Sure if you are trail rider and that is all you do then yes 3100 miles may be easier than out west but then those guys should be riding apex 4 stroke trail sleds with all the sit and steer bells and whistles. For those of us that ride in mn and out west we treat mn like a traininng course in preparation for the riding we want to be doing out west. Imagine yourself riding in a snow rose event. That is how the guys that ride out west also prefer to ride in mn. We are very hard on our machines and can't stand trail riding. A lot of us have 2 sleds. 1 sled in mn that can handle the over all brutal hard hitting abuse ka sled will take in mn and another sled designed to ride in the mountains. Certainly still rode hard and pushed but one capable of handling the snow degree of steep and deep we hope to face out west.

So you are trying to tell me that you ride 80+ mph for a 50 mile stretch? I used to live and ride in MN and you are exaggerating to make a point. That just doesn't happen.

On the flip side, we often have to ride 2-3 feet of ungroomed powder just to get to our riding area, 10 miles in. THAT requires an hour or so of WOT, and it happens all the time. Then our regular riding requires a LOT more WOT than you will ever see riding groomed. I know everybody thinks they ride hard.... My experience is that you can not possible be harder on a motor in the flatlands than in the mtns, hence my bold statement. There is a reason why midwest based sleds accumulate so many more miles than mtn sleds.