Fix kit for 2013 pro

Diehardrmk

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I know there are many post about the fix kits for the pros, I have read many of them on various sites, I would just like to start my own and get some advice first hand rather than taking bits and pieces from a bunch of posts. Thanks in advance for any help.

so I just bought a 2013 pro 800 off my dad, the sled has 2700 miles on it. It's virtually mint my dad can ride but he's not overly aggressive. I did a compression test and I'm reading 118-120 psi on both sides, and sled runs perfect never had an issue. I'm going to install the mtntek fix kit just because of the mileage, I've never done one before but I'm good with a wrench and do my research.

So im just wondering if there are tricks and tips that I might not know or missed while doing my research. I have read some ppl are turning up the oil pump, some say one full turn others say 3. Anyone know for sure which it is?
Also can anyone confirm torque specs for jugs and head bolts? I know to check piston tolerance and ring gap. Silicon on head bolt when I reinstall, I also read that putting the front of the sled on some milk jugs to help with any coolant locks. I'm getting the jug honed once I get it off and make sure it's in good shape. I should coat everything with oil on install aswell? Just to have the extra oil for start up, is that correct? Replacing all upper gaskets/o-rings, or are they reuseable? I can't think of anything else at the moment but am hoping someone can confirm the info I have already. Again thanks in advance for any advice or tips thank you
 

JMCX

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This is a very hot topic on some other forums. I have installed said Mtntk pistons before but am now of the opinion that you should stay with OEM cast pistons. Not because anything went wrong but just knowing the nature of forged pistons and two strokes.

Also, it is not a given that you need to hone the cylinders because of new pistons (old school thinking). This will get even more eyebrows raised ;)

Clearances are very important for sure. Do a search and you will find a link to the Pro shop manual that lists all specs.
 

Diehardrmk

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Thanks for the reply!! See now I'm confused i have heard the exact opposite about the pistons, and about honing lol. I read and was told honing a must and that the pistons are the main problem with the cfi motors and lack of oil.
 

JMCX

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Thanks for the reply!! See now I'm confused i have heard the exact opposite about the pistons, and about honing lol. I read and was told honing a must and that the pistons are the main problem with the cfi motors and lack of oil.

Too loose clearances from the factory was the main problem. Polaris got their act together for the most part in 13. A hone job that isn't extremely fine will result in it filing down your nice new pistons to that too loose condition. So the theory goes.

Definitely turn up the oil. Aim for a litre of oil to tank of gas. 40:1 ratio.
 

Diehardrmk

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I agree, all I heard was that a very fine hone is all that is needed, just enough to take off the shine in the cylinders. When you say turn up the oil how much we talking?
 

JMCX

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I agree, all I heard was that a very fine hone is all that is needed, just enough to take off the shine in the cylinders. When you say turn up the oil how much we talking?

That's part of the old school thinking. That the 'shine' is bad.

As far as the oiler goes, every sled is different. Start with one full turn and go from there. Gauge your oil and gas usage and figure out the ratio. It's made it this far so it can't be too bad. Be careful not to bend the tab with the adjuster screw.
 

007sevens

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My suggestion is get a hold of the Service manual. A few on here have it. You do not need to hone the cylinder, if you do your just causing more wear on the nikisil. If you still have 118-120 compression your engine is in good shape. What will be weak is the skirts of the piston. If you push that engine it could cause the skirt to break and Grenade the engine. I suggest a new set of pistons. Now that being said.

The 13 had good pistons and you could just freshen the engine up with new set of OEM pistons and call it good. Or you could put the fix kit in and when I say the fix kit I mean the MnTek kit. I feel some other kits are in-superior in design. You will see better compression and maybe a slight improvement in HP but to be quite honest the 2011-2015 engines where fairly reliable especially the 2013-2015's. I have seen many pistons due to lack of oil and in the use and in all cases the skirt because of the geometry of the build of the engine where thin. The piston is not the same diameter from top to bottom and as such have a loose fitment OEM over the Weisco which will increase compression. I have 2011 with a MnTek fix kit that seemed to really improve the performance of that engine. I also have a turbo 2013 which I have put a few sets of pistons in and I believe that OEM is the best for that engine. Just My two cents. ether way I don't think you will go wrong.
 

Diehardrmk

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Ok so now I'm hearing from 2 ppl that I shouldn't hone lol to be honest you guys are the first to say not to. I can see your point and I'm going to dig deeper into whether or not to do it after I get the jugs off and have a look. If it looks good maybe I'll just leave it as you guys suggest. I'm going with the fix kit because I haven't really heard any negative things about doing it. I'm going mtntek because I know a few guys that swear by them so that's good enough for me I could go bald reading reviews on all of them lol. isn't the issue with oem pistons the same as it always has been? Under oiled and not tight enough in cylinders causing piston slap over time and in turn scoring and compression lost. I owned a 09 dragon and that's exactly what happened to me. Started losing rpms over time until I had to limp it home 100 miles from my truck ��
 

slededjr

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If there’s no scoring or deep scratches then you don’t need to hone. If it’s just glaze you have and cross hatches are still visible, wd40 (or equivalent) and a fine scotch brute pad will deglaze it for you. Nika sil is quite hard and hard to hurt with a home unless wrong type, grit and or size is used.
 

Diehardrmk

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I was just going to take the cylinders to a shop to get honed. I just read the thread about the scotch pad. Might just do that if cylinders look good.
 

XanderKane

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I posted in another thread what INDY DAN had posted on Snowest recently and he suggested if you don't have a problem with the sled and compression is good do NOT touch the top end. It's worth a read.
 
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TDR

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Yes until the last Pro is gone you will have lots of reading material on this subject. I? have had many of these sleds and in fact am about to install a Mtntk fix kit in my ‘15 with about 3000 miles on it. Not because it is showing any issues but because the odds show if you don’t it will leave you stranded somewhere you don’t want to be. The 14-15 were better and built with thicker piston skirts but I’m not taking a chance. I? have always done a very light hone on the cylinders. Before you hone clean them up and inspect carefully. Look for any fine cracks in the mono block. This was not uncommon in 11-13. The one thing about the Wiseco pistons is warm the sled up to temperature before taking off. Forged pistons expand differently than the stock ones. Very important. Pretty easy install just take your time. Make sure you get the pistons in the right direction (arrows) and put the snap clip retainers in properly so they don’t come out.
 

Frankenytro

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I run 2 sleds with fix kits (mtntk), and both received them at around 1500 km. I as well fall into the no hone category and have found scotch brite to bring the crosshatch back to a nice look. I now have 2500 on one and 3500 on the other and have not had a single hiccup. I think the biggest thing is do your research as you are and take from it as much as you can. Mechanical repairs and issues very seldom have only one way to right them or method to accomplish them. Be smart, take you time and pay very close attention to detail and you will be fine. This could also be a great time for a head and some intake venting lol

Also, a hard copy manual is worth its weight in gold. Spend the $100 and treat it as your bible. It is always nice being able to reference specific info without trying to load the manual.
 

ABMax24

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I too have run the mtntek fix kit in my pro, I got close to 3000km boosted on it before it leaned out and melted a piston. I pulled it out and run forged wisecos now. I'm not a believer that a taller piston is required, the issues are due to poor material/quality control in the factory ones.

I have also never honed my cylinder when replacing pistons, when I replaced my cylinder at 4500km it was still showing the factory honing marks.
 

takethebounce

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The taller pistons are generally Cat pistons. It doesn't fix the problem, just gives you a fighting chance. IndyDan is a good resource and has put hands on hundreds, maybe thousands of these motors. I also believe RK Tek, (Kelsey) has a good handle on the problems these motors have and he also while offering a "fix" does not run taller pistons. Its nice when you can pick up the phone and call him to ask a question and get a real answer. I would either run the RKTek or stock pistons than taller after my own researching of the subject.

Honing vs deglazing, I will leave up to the owner to decide. I have seen some shady nicasil and seen some great replating done locally and won't touch it with a hone after seeing how quick you can mess it up.
 

Diehardrmk

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Thanks or all the info guys I really appricate it. I'm ordering my parts this Friday so should be good to go next couple weeks. Keep the info coming though if anyone else wants to weigh in on the subject I'm all ears
 

Diehardrmk

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I'm going with mtntk because I know a few ppl who ran that kit and said they had great luck with them. And these guys put 4-5k miles on in a season or more. I'm usually lucky to get 1500 miles in a season lol. Plus they are a good price which makes the wife happy,. Happy wife happy life right!! Lol

one question I do have is what are most guys doing to the oil, how many turns some say 3 and others say 1 is enough or does it depend?
 
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