to the forum

 

Yikes, all over saving $15. on an air filter.

I would purchase a NEW motor and sell the old one for the core value to bring the total repair cost down.

 

Get a second opinion from another dealer on the extent of damages!!

D

 

Something sounds fishy to me. You have 22 hours use with an aftermarket filter and it ruined your engine. Can an aftermarket filter be that poor? I am not saying it couldn't happen but I would be questioning the dealers diagnostics of your problem. Check some other stuff first. Electrical, Fuel pump, TPS, battery, fuses, relays, ect. Does it still turn over? Does it still have compression? Was it blowing smoke when it quit?

D

 

Yeah, seems a bit crazy to me as well on the filter. Would turn over but lot of engine knocking around 2000 rpms until it just quit. Probably get 2nd opinion.

 

That sounds bad!!

D

 

Anyone know what a 2021 Sportsman 850 non working engine core might go for $$ wise?

 

Don't sell yourself short on your core engine. Most only require that the crankshaft turns and there are no holes in the block to be an acceptable core.

 

I have heard good things about these guys. I have never used them but they look legit to me.

nFLOW | Leader in Remanufactured ATV/UTV Engines

Shop remanufactured ATV and UTV engines at nFLOW. Find engines for Polaris, Can-Am, Arctic Cat, Honda, Yamaha, and Kawasaki, all rebuilt to surpass original specs

www.nflowmotorsports.com

D

 

Cool, yeah I reached out to them earlier, they said they would send me a refurbished engine with 6 month warranty for $4295 and then pay me $800 to send my core back to them. (They'll cover shipping) so total $3495 + $1000 labor from dealership to install it.

This seems to me like it might be the most economical route.

 

 

There are independent shops that would eagerly install a rebuilt engine over rebuilding one and the independent shops do not have the overhead of a dealership and can probably do it cheaper.

 

Thanks guys, appreciate all the feedback. All great suggestions, waiting on a chat with Polaris then will figure out which direction to go.

 

I agree with latebird on a reputable small shop vs. a dealer install. If you want a quick fix with warranty, Nflow is a good option but expensive. If you're not in a big hurry, you could save a substantial amount doing a rebuild.
I would also add that without tearing your engine down and inspecting it you or anybody else is only guessing as to what the actual damage is or what it would actually take to fix it.
Sent you a PM.

 

Yeah, probably go with another shop thats not a dealer, couple decently reviewed ones nearby. The Engine was torn down by the dealer, below are the pictures of the damage.

 

Yeah, probably go with another shop thats not a dealer, couple decently reviewed ones nearby. The Engine was torn down by the dealer, below are the pictures of the damage.

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That doesn't look to be problematic of a poor quality air filter, that looks to be more in line with metallurigal defects or casting defects. I'm not a metallurgist or a casting specialist but I'd bet there was a problem with it before it was eber turned ober for the first time but the heat from operation compounded the defects.

 

Yep, right there is clear proof of WHY you should never put a K&N air filter on a dirt machine.

 

I tell that to my riding buddy all the time. First thing he does is take off the factory filter and puts on a k&n washable filter.

He also buys 4 year warranty. I keep telling him that they will go backward on the warranty when his engine fails and they find that K&N on his bike.

D

 

A moderator should make this a sticky post, because many others have said that they use k&n air filters. This debate on k&n comes up often on this forum. These pictures say a thousand words.

 

Agreed, I had no clue about this or would have never even thought about using it. Hopefully this helps save others in the future.

 

Did you oil the airfilter? Correct me if I'm wrong but you have to oil the K&N airfilters. If you put in an airfilter that is supposed to be oiled and you put it in dry you mine as well ha e nothing on there. Bummer story, sorry to hear dude.

 

I once bought a car that had a K&N filter in the factory housing, I had no idea until my local garage called and said they don't service K&N filters. When I replaced it there was all kinds of dust dirt that had passed through the filter downstream, was never a fan of K&Ns but that day I swore never buy a vehicle that has a K&N on it, first thng I look for when looking over a new to me vehicle purchase.

So sorry you had to find out the hard way on K&Ns, what a bummer!

 

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Polaris most likely is not going to do anything because the Air Filter I installed 3 months earlier for 50 hour maintenance was not a Polaris filter (thats on me) and its out of warranty and I have no insurance.

My options I see are:
1. Pay for the new engine install - $7000
2. Pay for refurbished install for around $4500.
3. Sell the 4 Wheeler as is for parts (no idea what I could get for it)

Hard life lesson and just now trying to figure out the best economical route.

Thanks

Just curious was it a K&N Air Filter?

R2C Air Filter would've been a better choice as for aftermarket.

I too have a K&N Filter bought it off Ebay in 2016 when I purchased my ATV but have yet to install since then I bought a R2C filter. After seeing those pictures, the K&N is going in the trash in the morning only held onto it this long cause I paid $75.00 I was planning to get rid of it on Ebay, but I am not going to be the cause for trashing someone's machine. It's going in the trash 1st thing in the morning,

 

I run a 2 layer uni foam filter on my offroad vehicles.

K&N filters I only run on my street cars because they don't see a lot of dust or mileage.

the K&N might have been fine if you cleaned and oiled it every ride but that's a big commitment.

 

The issue with K&N as I see it is that many folks think you can go as far between cleaning it as you can on a car, on your ATV...NOT! One weekend on the trail seems to equal 20k on the road. Better to stop on the trail and clean it, than to run with nothing to get home. I check and clean my K&N, if needed, EVERY time I get off the trail. Does not take but a second to check it. I even have a spare in a sealed bag in the back storage, with my spare belt and tool bag. Just uneducated 2 cents worth.

Hondov65, I'll give you $20 for your K&N, seriously, before you throw it in the trach.

 

"I'll give you $20 for your K&N, seriously, before you throw it in the trach. "

I've got 3 or 4 on the shelf at the garage I've removed from customer's machines if this is an open offer?

 

To late crushed and thrown in the trash

 

I have a Jeep Wrangler that I use off road as well and K&N have never failed me there. As far as cleaning and oiling them "every" ride, I would guess that would be long rides. Because my truck and Jeep see a LOT more mileage than a weekend on the trail; with my Sportsman. I guess time will tell. To me looking at my air filter is kind of like checking your oil in your car when you fill your tank. I do not wait 3000 mile to check my oil at the next oil change. But hey! I am retired so I have time for a bunch of stuff. If I put fuel in the Sportsman, I have checked the air filter and the oil level as well.

 

K&N air filters might be ok with the proper frequent maintenance, I decided long ago to not take any chances, so I’ve never used them.

 

OK I can see an air filter causing top engine problems like cylinder scoring or possible valve problems but what your showing is wiped out crank and rod bearings. So either dirt or sand was in the oil or it lost oil pressure causing galling in the bearings. Do you use oem oil filters?

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He said it burned all the oil past the worn piston rings and was low on oil

 

Your definitely better off with a new or refurbished engine though from what I see because there is probably cam or head damage also from lack of oil.

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