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MPI 190 turbo installation tips

motojunkie101

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Nov 26, 2007
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Sandpoint, Idaho
First off, Yamaha calls it a 180 kit and MPI calls it a 190 kit per their instructions. Maybe Matt can tell us the difference?

I didn't take pictures of everything since the installation instructions have very good pictures. I just took a few snaps here and there, and I can point out what I did wrong in a couple of them.

Installation instructions:

http://www.mountainperformance.com/support.htm


Here is a wall of text that might help you during the installation. 90% of the install is easy, it is just time consuming.

I didn't use any specialty tools:
8mm
10mm
12mm
14mm
19mm
straight slot screw driver
Torx set
Pliers
metric allen wrenches (one set I have has a "ball" on one end so it can be used at an angle...they were very helpful with the throttle bodies)
Square nosed cutter things (used on clamps)
Heat tape
Strap wrench (nut under the fuel cap)
Oil
Coolant

Notes on steps that gave me issues, or took me longer because I'm a shoddy mechanic:

Step 4 - I had to unbolt most of the upper frame to get the tube out, I couldn't slide it up, down, sideways enough to get it to drop out without taking a few more things loose.

Step 4A - I spent 10 minutes trying to not make a mess, but in the end I just unpluged the oil lines and let it drain into the pan. There is a drain hole, but you'll have to mop up the remaining oil with a rag.

Step 12 - I didn't need to silicone the small washer to the large one. Just be careful when you install the bolt.

Step 25 - both of the gold left hand torx bolts were torqued down so tight that it nearly destroyed my torx bit. It warped the bit pretty bad, so I quit and used a cutoff wheel and my drill to get them out. Broke one drill bit, chiseled off the heads and got one to unscrew with needle nose pliers on what was left of the bolt. I scavenged a replacement bolt out of my garage to put the heat shield back together.

Step 27 - Don't route the hose under the engine until after you get it secured on the rear frame port. There is no room for your hands so you have to use the hose to push it onto the nipple. I even had my wife try and her hands were too big to fit as well.

Step 30 - DO NOT REINSTALL THE FUEL TANK! I had to uninstall it again to get to the clamps on the throttle bodies. Maybe I have fat hands, but it was far easier to get to everything with the fuel tank moved back. The tank can be reinstalled after you get the throttle bodies tight around step 51.

Step 45. When you cut the aluminum line, I would cut just a little closer to the short side than in the middle. I cut dead center and when installed in step 47 it contacted my hood and had to be shortened again.

Step 51A - Verify throttle cable free play - Mine needed more slack. I didn't realize it until the end when I tried to start my sled and it wouldn't fire until I loosened the cable. You can also reinstall the fuel tank after the throttle bodies are reinstalled. Take care to put the wiring back into place in the channel on the black rubber piece about in the middle of the seat on the left side.

Step 53 - Notice the angle that the upper radiator hose is installed on the thermostat housing. If installed with the housing straight up and down like in the step 52 picture you will have clearance issues with the hood. Tilt it to the outside about 30 degrees.

Step 55 - shows the wiring routed above the frame rail, but you may find it fits better routing underneath. I didn't like the angle of the wires when ran over the top.

Step 63 - may take you a few times to get the alignment right, it took be about 3 times.

Step 65 - I had to remove the fitting from the turbo, install the line, and reinstall everything. There isn't enough room to clamp it with the fitting on the turbo. Don't lose the O-ring, mine fell out when I removed the fitting.

Step 68 - was a bit of a challenge holding the turbo and reaching around to start the installation bolt. Don't be like me, make sure the waste gate line (blue) is routed correctly so you don't need to take the turbo off again.

Step 73 - Don't trim too much off the line, if you do you'll be like me and the line will end up pinched a little between the frame support and the engine (step 89). Mine isn't bad enough to need a new hose but any shorter and I'd be in trouble.

Step 75 - After the hose is reinstalled I wrapped the exposed parts with more heat tape left from my Nytro installation a few years ago.

Step 76 - This one blew my mind. The port was on my exhaust after the turbo instead of in front of it. Don't panic if you can't find it, it looks like a small change in their kit from the time the instructions were written.

Step 79 - The orange plug is in package 1178 with a small filter used in step 83. I couldn't find mine and panicked for a few minutes.

Step 85 - I posted pictures of my install on facebook and the one and got some sage advice from Randy Swenson - If you ride trails, the underhood install is fine however, If you ride in any kind of powder the kit needs the filter out of the hood in the cold air so it can fuel properly.

Step 95 - I would loosen all the mounting bolts around the top, but don't remove them. Having just a little wiggle room made it far easier to get the new frame tube installed. Once it is in you can tighten all the other bolts.

Step 106 - these bolts are seriously torqued down. I used an end wrench and a rubber mallet to break them loose.

Step 113 - Do not mount the GEMS box on top of the new airbox next to the boost sensor. I mounted it to the rear over the side. If you mount it on the top of the air box you may have clearance issues with the hood.

The instructions say to clearance the hood for the new Airbox while the pictures say to clearance it for an intercooler. You will need to clearance it for the Airbox as well, so break out the grinder and make some holes.


I recommend test fitting the hood several times to make sure you are comfortable with how everything fits and to make sure it lines up properly. Once you are ready to start it up, I also recommend you leave the hood unbolted so you can check for leaks on all the coolant and oil lines you've modified and moved around. If the hood is bolted in place it is much harder to see all the lines you've been messing with under there.

Good luck! If anyone else has tips they want to share feel free to post up.
 
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T

tar

Well-known member
Nov 26, 2007
562
161
43
Sumas WA
I put my kit on last week. My kit has the intercooler so it was a little different.
I had trouble getting the Torx head screws out of the heat shield and had to heat them a little and had to drill and use an extracter to get one out.
My kit was missing the breather hose on top the air oil separator.
I had to shorten the aluminum pipe at the top of the oil air separator to clear the hood.I would just go to the parts store and find a hose with a tight 90 and use that instead of the short hose and aluminum tube, this would keep it low and have only one clamp instead of two.
Over all a well put together kit and looks factory.
With the intercooler I don't see any way to get the intake out of the hood. I put mine under the radiator in front of the nose.
I tested the waste gate and with a home made tester it would move with 5.5 to 6lbs of air
pressure so I should be good with pump gas.
Take your time and lay things out and read thru the install instructions and you shouldn't have any trouble.
My kit had the crimp clamps so I found a cv joint boot clamp crimp pliers at NAPA.
I can get the part# if any one needs it.
The crimp clamps are awesome with the right tool.
I put the Gems controller under the "tripod" steering suport fit perfect and is guarded by the tubing.

This is my first 4 stroke yamaha, what do I need for clutching?

Can't wait to ride this sled!

Tar
 
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CHAZWILDMAN

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Jan 5, 2011
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nice build thanks for posting!!!! yes i would love to hear what everybody is doing for clutching also?
 

motojunkie101

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No, there was no clutching included. I'll post up what I end up with when I get some snow to break in my sled. I'll probably clutch it a few hundred rpm low so that when it loosens up I'll be spot on the money.
 
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blown addiction

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Lifetime Membership
Dec 3, 2007
138
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18
Pocatello
Suggested by Matt

This is what I got response for some clutching recommendations from Matt

I bought the 46/42 multi angle helix though

The recommendations assume its a short track. So disregard those.

Try this for MTX
180 clutching
90501-583L0-00 Blue/wht/blue primary spring
90261-06019-00 13.3 steel rivet inner hole
30266-06001-00 13.3 alum w/hole outer hole
8BV-17604-51-00 45* helix
90508-60016-00 wht/wht secondary spring set to 70* 6-1

Stage 1 viper kit
90501-583L0-00 Blue/wht/blue primary spring
30269-06006-00 steel 17.2 inner hole
90261-06019-00 13.3 steel rivet outer hole
8BV-17604-71-00 47* helix
90508-60016-00 wht/wht secondary spring set to 70* 6-1
 

sidehil

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Nov 29, 2007
687
158
43
Federal Way
Where is everyone getting their torque #s for all the nuts/bolts. Online I can not find a OEM shop manual? Every model but the viper for 2015? Need some new plastic already, early season is fun till you whack something :face-icon-small-con
 
W

whitee

Well-known member
Nov 27, 2007
191
86
28
Billings, Cooke City MT
great write up Moto I had about the exact same experience with my install and for the air intake that is exactly what the Yamaha employees did in testing to get them to run good at West Yellowstone for all the photo shoots was hood exit I havent done that yet I am trying to make something work to exit behind the windshield.
 

sidehil

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Lifetime Membership
Nov 29, 2007
687
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43
Federal Way
Step one is clean up the shop, panels off but got to work in HI. Keep those tips coming for us T newbies!:face-icon-small-hap

image.jpg
 

sidehil

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Nov 29, 2007
687
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Federal Way
Can't even get a cover yet, but they are new and I'm gonna do like every one, no torque wrench. Apex cover works just fine tho.
 

motojunkie101

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Staff member
Premium Member
Nov 26, 2007
2,281
805
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Sandpoint, Idaho
This is what I got response for some clutching recommendations from Matt

I bought the 46/42 multi angle helix though

The recommendations assume its a short track. So disregard those.

Try this for MTX
180 clutching
90501-583L0-00 Blue/wht/blue primary spring
90261-06019-00 13.3 steel rivet inner hole
30266-06001-00 13.3 alum w/hole outer hole
8BV-17604-51-00 45* helix
90508-60016-00 wht/wht secondary spring set to 70* 6-1

A box showed up from Michelle/OTS today with all the above parts. I was going to get the 45* helix as well, but those are back ordered along with most of yamaha's parts catalog it seems. In light of the back ordered parts she sent me the MPI 46/42 Helix instead

I'll post up how it rides when I get it out again. The first ride I couldn't go more than about 3/4 throttle without hitting the rev limiter, but boy it was nice!
 
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sidehil

Well-known member
Lifetime Membership
Nov 29, 2007
687
158
43
Federal Way
I printed MPI's instructions and your added info on nice new photo paper, three hole punched and it's in binder. Way better then reg paper for 50 year old eyeballs!
 
V

vector boy

Well-known member
Jan 5, 2008
1,227
405
83
Norfolk, NE
I'm pulling the trigger this weekend. What do you estimate the real world build time on this was?

Did my '16 a couple weeks back. Took 2 of us about 2.5 days (9-7ish with an hour or so break for lunch) with running board install as well. Took my time, read the instructions 3 times each step, and went one step at a time. I would like to note MPI has not updated instructions, so we had to print of the oil bypass instructions since I have an updated '15 kit, along with the instructions for the EBAC. From there we had to jump between 3 different instructions for awhile during the install. We could have done the turbo, then the oil bypass, then the EBAC, but it was easier to get it all done and bolt it all up without having to pull things back off later. Once you get to about step 56, things start picking up quickly. You're done taking things off, cutting them, and rerouting them. Good luck, and have these tips close. They come in handy frequently.
 
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