Hey guys,
Seems like there is a lot of interest in the Mtntk turbo kit for the Axys. 2 buddies and I snowchecked kits this year, so I'm creating this thread to go over the details of the kit, installation, ride videos/reviews, etc.
I've been dreaming about getting a turbo sled since I got my first mountain sled 6 years ago. I think I've read every single turbo thread in both the Arctic Cat and Polaris forums. We ended up going with the Mtntk just based on prior research, what I learned in college, talking with my engineering buddies, and the quality of components that come with the kit. There was essentially nothing out there in the form of videos or reviews on the Axys with this kit but we committed to it anyways. So I've been super anxious to check out what we got!
Our kits just arrived and I took some detailed photos of the components within the kit.
Turbo:
Borg Warner EFR 6258. This thing is trick. Gamma-Ti turbine wheel, ceramic ball bearings, forged milled compressor, integrated blow off recirculation valve, internal wastegate that was designed for high performance gas engines.
http://www.turbos.borgwarner.com/files/pdf/efr_turbo_technical_brief.pdf
This thing will flow some air!
Tunnel Cooler:
Custom extrusion for Mtntk so it fits perfectly in the center of the Pro and Axys tunnels. Nice welds and it's gigantic. Shouldn't have any overheating issues and the charge air should be very cool and consistent!
Intercooler:
Honestly this was the part I was a little worried about. They're using 3D printed throttle body adapters which also house the new injectors. The surface finish on the injector mount is nice and smooth, and Mtntk says they have never had any issues with those. Now that I have them in my hands, they seem pretty stout. The air path and coolant path are two aluminum welded assemblies that are then bonded together with the same adhesive Polaris is using on the chassis. Construction looks sound to me. And then everything else is bolted to the box with what looks like a type of PEM nut pressed into the sheet metal. Nice! Everything is also sealed with a type of gasket maker material as well. My worries are gone now for sure.
Muffler:
Super nice looking muffler. Quite a bit smaller than I anticipated. Pretty light. V Band connection and spring clamp to the chassis. Very nice as well.
Nuts and Bolts:
Everything else is nicely packaged. Comes with new injectors, all the coolant, oil, and reference line hoses. All the zip ties, springs, etc you should need for installation. Bully Dog GT Tuner so no need to send in our ECU's for reflash. We can also use it for diagnostics and datalogging should we have a problem with our machines. 18 pages of instructions. Install looks pretty involved. But that is to be expected with how tight they have this packaged together. The turbo is very centralized in the chassis. Charge tubes are ultra short. Like a couple inches is all. We got our kits sent with clutching to run 9-10 ish lbs boost at 6000'. Clutching is stock secondary, 10-74's with a 180-320 primary spring. We will be experimenting with boost once the snow flies.
All in all so far I'm very impressed. Hard to believe you can get all this stuff for $4000!!!! Even now the price is $4400, which is still a smokin deal considering what you get. We'll see how she performs come December. Cannot wait!
Seems like there is a lot of interest in the Mtntk turbo kit for the Axys. 2 buddies and I snowchecked kits this year, so I'm creating this thread to go over the details of the kit, installation, ride videos/reviews, etc.
I've been dreaming about getting a turbo sled since I got my first mountain sled 6 years ago. I think I've read every single turbo thread in both the Arctic Cat and Polaris forums. We ended up going with the Mtntk just based on prior research, what I learned in college, talking with my engineering buddies, and the quality of components that come with the kit. There was essentially nothing out there in the form of videos or reviews on the Axys with this kit but we committed to it anyways. So I've been super anxious to check out what we got!
Our kits just arrived and I took some detailed photos of the components within the kit.
Turbo:
Borg Warner EFR 6258. This thing is trick. Gamma-Ti turbine wheel, ceramic ball bearings, forged milled compressor, integrated blow off recirculation valve, internal wastegate that was designed for high performance gas engines.
http://www.turbos.borgwarner.com/files/pdf/efr_turbo_technical_brief.pdf
This thing will flow some air!
Tunnel Cooler:
Custom extrusion for Mtntk so it fits perfectly in the center of the Pro and Axys tunnels. Nice welds and it's gigantic. Shouldn't have any overheating issues and the charge air should be very cool and consistent!
Intercooler:
Honestly this was the part I was a little worried about. They're using 3D printed throttle body adapters which also house the new injectors. The surface finish on the injector mount is nice and smooth, and Mtntk says they have never had any issues with those. Now that I have them in my hands, they seem pretty stout. The air path and coolant path are two aluminum welded assemblies that are then bonded together with the same adhesive Polaris is using on the chassis. Construction looks sound to me. And then everything else is bolted to the box with what looks like a type of PEM nut pressed into the sheet metal. Nice! Everything is also sealed with a type of gasket maker material as well. My worries are gone now for sure.
Muffler:
Super nice looking muffler. Quite a bit smaller than I anticipated. Pretty light. V Band connection and spring clamp to the chassis. Very nice as well.
Nuts and Bolts:
Everything else is nicely packaged. Comes with new injectors, all the coolant, oil, and reference line hoses. All the zip ties, springs, etc you should need for installation. Bully Dog GT Tuner so no need to send in our ECU's for reflash. We can also use it for diagnostics and datalogging should we have a problem with our machines. 18 pages of instructions. Install looks pretty involved. But that is to be expected with how tight they have this packaged together. The turbo is very centralized in the chassis. Charge tubes are ultra short. Like a couple inches is all. We got our kits sent with clutching to run 9-10 ish lbs boost at 6000'. Clutching is stock secondary, 10-74's with a 180-320 primary spring. We will be experimenting with boost once the snow flies.
All in all so far I'm very impressed. Hard to believe you can get all this stuff for $4000!!!! Even now the price is $4400, which is still a smokin deal considering what you get. We'll see how she performs come December. Cannot wait!
