[Flying Elvis]

I have a 2012 Ranger XP 800 with a sob story. It was stolen with very few miles, luckily got it back but now it has issues. The losers that stole it ran it without an air filter for some reason now I have low compression in one cylinder. Without thinking much (I figured the motor is toast) I ripped the head off. Now I don't know what to replace valves or rings or both? A second issues is that the spark plug of the cylinder that had low compression appears to have been hit. No signs of damage to head or piston what could have bent the spark plug? Any thoughts or advice would be appreciated.

 

[trog]

contact nflow on here T&S

 

[kudidl]

Don't know how long it ran with no air filter or how much dirt/dust it consumed but typically dirt/dust will take the rings out.
if you're that far in it I'd do a valve job too, but as Trog says you can contact Nflow for reman price of an engine. You might even get some core charge for your old one.

 

[carnivore]

It's almost certainly rings. You will need to get the cylinder diamond honed also. You can check the valves by pouring some alcohol on the head and see if any flows through.
The real question is how much dirt made its way into the crankcase?

 

[Flying Elvis]

Thanks for the advice everybody. Decided to go all out and take more apart. The rings were obliterated. At least we could account for all the pieces. I think I could eliminate the valves as the problem, but still going to have head checked out.

 

[POS POLARIS]

the valves will be noticably sunken into the head if they've pounded out the seats and the valve surfaces themselves. Did it score the bores too? you're most likely looking at least new rings/pistons.

What about this spart plug that you said was damaged? any marks on that piston face? hows the bearings/bushings on the rods?

best of luck!

 

[nFLOW]

Don't know how long it ran with no air filter or how much dirt/dust it consumed but typically dirt/dust will take the rings out.
if you're that far in it I'd do a valve job too, but as Trog says you can contact Nflow for reman price of an engine. You might even get some core charge for your old one.

Thank you for the referrals kudidl and Trog. We really appreciate it. Flying Elvis, we can completely remanufacture your Ranger 800 engine for $2,925 with core exchange. This includes FREE SHIPPING in the lower 48. All you have to do is strap your engine to a pallet and we take care of the rest including arranging all shipping logistics. Complete reman means we will do a complete tear down of your engine, wash and media blast, perform necessary machine work in house on our CNC equipment, replace all worn or damaged parts, and then reassemble your engine. The engine you receive back will both look and run like new. You can find out more about us at www.nflowmotorsports.com and like us on FB at www.facebook.com/pages/NFLOW/237263726448384. Just give us a call at 812-402-8282 to get the process started. Thanks.

 

[trog]

that's not bad for all that T&S

Thank you for the referrals kudidl and Trog. We really appreciate it. Flying Elvis, we can completely remanufacture your Ranger 800 engine for $2,925 with core exchange. This includes FREE SHIPPING in the lower 48. All you have to do is strap your engine to a pallet and we take care of the rest including arranging all shipping logistics. Complete reman means we will do a complete tear down of your engine, wash and media blast, perform necessary machine work in house on our CNC equipment, replace all worn or damaged parts, and then reassemble your engine. The engine you receive back will both look and run like new. You can find out more about us at www.nflowmotorsports.com and like us on FB at www.facebook.com/pages/NFLOW/237263726448384. Just give us a call at 812-402-8282 to get the process started. Thanks.

 

[kevin8509]

I smell an upgrade. Might as well price out bigger can and bore and stroke job. Go big or go home it will make u feel better about spending a lot of money