[Justinfirebird]

I have a 2014 I think  Cf moto u force tracker 800 cc. I bought this machine with the engine seized solid. I can't budge the crank with a 2 foot breaker bar. And I was told many times that the cf moto engines are not very durable.  From what the previous owner told me, he was driving it hard and something broke loose on the front diff. And caused a significant amount of side to side play in the front drive shaft  which chafed an oil line going to or from the engine / oil cooler. Now. I purchased this machine. For a good price (at least I thought it was) and I could not find an oil cooler or any oil lines in the front of the machine. I searched around all the front suspension and differential and I'm that general area. But couldn't find the oil lines/cooler. Maybe I'm looking in wrong area? Or is it possible that this machine dont have a front mounted oil cooler? Besides the point , I am wondering what can be a good engine swap for this machine. I have a chance to pick up a working and running 660 yamaha grizzly. I have never done a engine swap in a side by side before but have done them in cars and dirt bikes before. Would you guys have any idea if a yamaha 660 engine from a quad be a fairly easy swap. ? Let me know what might be better, or easier. Or what would you guys do. Any help is appreciated 

[NMKawierider]

CF Moto makes their engines and obviously all their own machines. There is no other engine that will easily bolt-in place of the CFM engine and the process of adapting anything would be long and nightmareish...IMO. Your best bet is to either get a good running 800 from someone that's parting-out either a UForce or ZForce and do a straight swap or talk to nFlow about rebuilding yours. 

[Justinfirebird]

Who is this "nflow" you speak of? Thanks for a quick response also.

[doug80638]

Yes there is an oil cooler on these things. The radiator for it is located in the front of the buggy with oil lines going back to the engine.

If it's not there, then a previous owner removed it.

And that would explain the seized motor.

No matter what you put in, you will need to add the oil cooler.

The CFMoto 800 is a  RoTax clone, and is quite reliable if taken care of. I would find a direct fit replacement for the Tracker, or as Clark indicated, you're in for quite a project, and not just the engine, but the drive-train connection bits and various linkages, and other things that will get in the way of a different motor.

Here is a useful link for you. Select 2014 and then tracker.

https://alpha-sports.com/cfmoto_parts.htm?q=cfmoto-parts-catalog

[NMKawierider]

Who is this "nflow" you speak of? Thanks for a quick response also.

nFlow Motorsports- about the only rebuilders I trust these days. Here's a link:

https://www.nflowmotorsports.com/

[nFLOW]

Thanks for the recommendation NMKawierider!  Justinfirebird, let us know if we can be of assistance on a remanufactured engine.  www.nflowmotorsports.com

[WizBang]

Have you pulled the engine yet?? Wondering if you have gotten inside to see the carnage?

I'm putting my U800 back together and can tell you, If its bad then its not likely cost effective
to repair? (maybe.. if you can do it yourself?). Mine only had a knock and was well over $1000 in
parts alone... I could have cheaped out and done the absolute minimum, and ending up with
other issues later, so I got all the key bits... 
A new Crank assembly is likely another $1000 (was able to save mine). So I did....

An Ontarian on Kijiji posted his new dealer installed engine cost $5200 ... ('15 800cc ) seems a
bit high, but at $100+/hr it adds up ?

So.. a rebuilt engine that you can do yourself may be a good bet.

N-Flow is the only CF Moto specific re-builder I had come across.

The engine is pretty decent to work on so a reputable shop near you may be able help/do it?

Take any/all of this as you like.... and good luck!

[Justinfirebird]

Still looking for the better option, I rather find a different engine to install that is more reliable, than toss money into another cfmoto engine or repair/rebuild the cf moto engine just to see it go kaboom shortly after.

[NMKawierider]

Still looking for the better option, I rather find a different engine to install that is more reliable, than toss money into another cfmoto engine or repair/rebuild the cf moto engine just to see it go kaboom shortly after.

Then see if you can find a complete Rotax 800 from a wrecked Can Am. Still lots of adapting but the basic style is there...it is what they more or less copied. Sence you are at it, go for the 1000. Might as well.