Mtntk turbo issues, Polaris Axys.

Hughes · Mar 26, 2017

So I'm having issues with this turbo set up, it's my first turbo but this is what I'm finding. First and foremost after 600 miles I've discovered that every time I leave my sled outside and it rains the intake and turbo fills up full of water making it very difficult to start in the morning. I didn't know this was happening until I had some maintenance done on the sled and watched water poor out of the intake tube. Second, the welds on the stainless steel muffler are cracking all over the place. I've also gone through two sets of top ends on the engine, my dealer said it's my fuel and that I'm the only one having this problem, I think it's the water I'm sucking into my engine through the intake that came with the turbo setup. Is this happening to anyone else some feedback would be awesome.

sledhead9825 · Mar 26, 2017

Hughes said:
So I'm having issues with this turbo set up, it's my first turbo but this is what I'm finding. First and foremost after 600 miles I've discovered that every time I leave my sled outside and it rains the intake and turbo fills up full of water making it very difficult to start in the morning. I didn't know this was happening until I had some maintenance done on the sled and watched water poor out of the intake tube. Second, the welds on the stainless steel muffler are cracking all over the place. I've also gone through two sets of top ends on the engine, my dealer said it's my fuel and that I'm the only one having this problem, I think it's the water I'm sucking into my engine through the intake that came with the turbo setup. Is this happening to anyone else some feedback would be awesome.

Seriously !!!!

Hughes · Mar 26, 2017

sledhead9825 said:
Seriously !!!!

Ya I'm having issues, the muffler is easy enough to weld, I've sealed up the intake for water dripping into it and drilled two drain holes just Incase. I was literally riding it for a mile every morning before it cleared it's throat, couldn't figure it out. Don't get me wrong this sled is a beast and I'll fix it as many times as it takes. But I can't imagine I'm the only one. I'm still waiting to here back from mtntk.

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Davajn · Mar 27, 2017

Regarding the muffler. Thats a warranty issue. So just contact Shawn and will set you up. I know they are making an upgraded muffler design so might want to wait for that.

And the water issues sounds like a joke. But then again the OEM airbox is a joke... so who knows. I've also sealed the airbox. But never seen water intrusion. Then again i dont have my sled outside in the rain.

Where did you drill your drainage holes?

We need pictures tho. This thread is nothing without it. :juggle:

Hughes · Mar 27, 2017

Two holes bottom of aluminum intake, my dealer did this. My sled sat outside at the dealership for two weeks, I live in Washington state it rains alot here. I was leaving the sled on my sled deck between days I was riding, didn't think a little rain would hurt. I'll try and get the video my dealership took of the water pouring out of the intake tube.

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Davajn · Mar 27, 2017

Wouldnt another solution just be to cover the sled or just cover the airbox when its standing still? Because 99.99% sure the stock airbox is to blame here.

But another design of the aluminium box that bolts up on the oem airbox could also be done. Making the alubox abit larger so water can gather under the pipe inlet. And make so the water gather in the middle where a drainhole is placed. Plus a water "screen/roof" above the pipe inlet, so it doesnt drop straight into the pipe and down to the turbo.

Send that to Shawn and you'll see he takes notice of it. They are very eager to improve their products!

Hughes · Mar 27, 2017

That's exactly why I'm posting this I want to help make this kit that much better, cause it runs flawless once I'm going. I did a water test on the two holes that were drilled and all the water escapes before it makes its way down the tube, I don't plan on leaving my sled outside in the rain anymore.

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sledhead9825 · Mar 27, 2017

Hughes said:
That's exactly why I'm posting this I want to help make this kit that much better, cause it runs flawless once I'm going. I did a water test on the two holes that were drilled and all the water escapes before it makes its way down the tube, I don't plan on leaving my sled outside in the rain anymore.

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You figured it out !!!! . I would never leave any sled out uncovered in the PNW never mind a mod sled. Put a cover on it.

Spaarky · Mar 27, 2017

If I had a new Axys with mntek it would go inside!!!!

Quick question, if you are getting water in, what about snow on DEEP days??? That would be my next concern. Snow can seriously wreck crap!

Hughes · Mar 27, 2017

Ya ya good idea I'll just drive under a tree every time it snows so it doesn't get wet, or maybe I buy an umbrella for when Im riding, seriously it's a snowmobile it gets wet there meant to thrash on in deep powder, I'm just letting people know it fills up with water. And as far as sucking water while I'm riding I'm pretty sure that's why I get the occasional det code. Any advice on sealing the stock air box, I'm worried whatever I seal it with will get sucked into the turbo FML....

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aksledjunkie · Mar 27, 2017

Hughes said:

That looks like header wrap in the bottom left corner, whatcha wrapping??

Hughes · Mar 27, 2017

Just the stock pipe, got tired of the aluminum rattling around and everything getting covered in fiberglass, it was a pain I don't recommend doing for fun.

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AKFULLTHROTTLE · Mar 27, 2017

Holes drilled like that will suck in some nasty under hood mess!

Hughes · Mar 27, 2017

AKFULLTHROTTLE said:
Holes drilled like that will suck in some nasty under hood mess!

I agree you should see the 1/2"x1/8 slots on the sides of it from factory makes the holes look small, I'll take some pics.

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Hughes · Mar 27, 2017

Hughes said:
I agree you should see the 1/2"x1/8 slots on the sides of it from factory makes the holes look small, I'll take some pics.

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Hughes · Mar 27, 2017

This is my fix 3m window weld urethane and foil tape lol. Don't judge me... I also tapped the drain holes for a 1/4-20 bolts for an easy plug drain just in case.

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Hughes · Mar 28, 2017

Here is the video my dealer took of the water pouring out of the turbo.

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Seabass152 · Mar 28, 2017

Hughes said:
Here is the video my dealer took of the water pouring out of the turbo.

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No video

d8grandpa · Mar 28, 2017

How is this a MTNTK issue? Seems to me a sled sitting in the rain issue. Mtntk uses the stock intake so if the water didn't go into the turbo intake it would go into the stock air box. Still going to have water ingestion problems.
IMO you need to address your sled storage decisions there bud.

JJ_0909 · Mar 28, 2017

d8grandpa said:
How is this a MTNTK issue? Seems to me a sled sitting in the rain issue. Mtntk uses the stock intake so if the water didn't go into the turbo intake it would go into the stock air box. Still going to have water ingestion problems.
IMO you need to address your sled storage decisions there bud.

Perhaps. But the second part likely has nothing to do with storage...

"Second, the welds on the stainless steel muffler are cracking all over the place."

Mtntk turbo issues, Polaris Axys.

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