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- 2020 Sidewinder SRX
Here is the complete write and info that I put together this spring of 2015 with Allen at Ulmer Racing. What a project it was.
- Remove the side panels, hood, seat and tank cover
- Remove gas tank and battery
- Drain oil and antifreeze - we removed the front bumper for ease of draining the antifreeze. We also removed the right side food well/toe kick to drain the oil
- Remove the inspection pan under the motor as well as the oil filter
- Remove heat shield
- Remove header
- Remove radiator and radiator bracket
- Remove silencer and heat shield
- Remove clutches, belt and clutch guard
- Remove cross member, air filter, and turbo in its entirety (turbo as one package)
- Remove air oil separator
- Remove main structure pipes from steering column down
- Remove throttle cable (put these around the handle bars so they are out of the way) and then throttle bodies
- Pull wiring harness to the left side so it stays out of the way
- Tilt motor forward to remove ground and starter cable
- Disconnect the 2 oil pressure sensors on the bottom of the motor, one is black, one is white
- Pull 2 front motor bolts and pull out motor
Last edited:
- Joined
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- Schofield, WI
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- www.totallyamaha.com
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- Snowmobile
- 2020 Sidewinder SRX
- Remove spark plug caps
- Remove top motor fasteners and head
- Remove spark plugs
- Line up the OHC with the marks on the cam caps
- Line up the pointer in the fly wheel which dictated top dead center on the #3 cylinder.
- Cams should point to 4:00 and 7:00
- Line up lines on timing chain gear
- Arrows point to timing chain. "I" indicates intake and "E" indicates exhaust side for cam caps. Intake cam has a single raised area and exhaust has double
- Pay attention to arrow direction on chain tensioner
- Do not remove the head bolt with an impact. Always start in the middle and stagger from inside out
- Use an old egg carton and label it to keep track of the locations
- Remove head and clean both the head and block with carb cleaner and paper towel
- Joined
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- PTO front corner stud cannot be threaded in too far - it will hit the water pump gear
- Install new gasket (. 080"), lube on both sides of washers and back side of nut
- Torque in 3 steps - center out crisscross
- 1st: 15 ft/lbs
- 2nd: 30 ft/lbs
- 3rd: 45 ft/lbs
- Walk away for some time, then come back and loosen each bolt by 1 1/2 turn and re-torque to last setting
- Remove intake boots and wash in hot soapy water
- Shim cams
- Advance timing one linkage on chain
- Reinstall head with Yamabond
- Reinstall cleaned boots with Yamabond
- Reinstall throttle bodies with Yamabond
- Reinstall motor, opposite of removal steps
- Install oil separator bypass
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- 2020 Sidewinder SRX
- Put silicon on exhaust gasket
- Reinstall turbo, waste gate, air filter, opposite of removal steps
- Reinstall and re-route oil lines, coolant lines for oil separator and thermostat housing
- Install 4th injector kit and updated fuel pump
- On throttle bodies, use another screw driver to remove screws, see photo
- See photos showing modifications to inter-cooler
- Fuel hose needed was about 5 1/2"
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- Mark, as shown in photo, fastening ring that holds fuel pump into tank. Be sure that the mark is on both the ring and fuel pump
- Unhook power
- Remove ring and fuel pump and very carefully pull out lines and filters
- Turn the white clips on the pump housing from perpendicular to parallel to remove pump covers to expose pump, filters, and hoses
- Remover power, positive and negative, from pump and bottom filter
- Remove metal ring from bottom of pump
- Remove corrugated line and pump
- Remove filer Y line
- Joined
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- 2020 Sidewinder SRX
- To remove the fuel pressure regulator assembly, push all 4 inner tabs in at the same time (you may need a couple extra hands for this)
- Pry tabs gently to remove white pressure regulator
- Swap o-ring to the new block off
- Put into assembly and reinstall
- Install sealed washer onto the brass 90 degree fitting
- Drill a hole into cap, approx .389"
- Install nut onto backside of brass elbow, use red lock-tite and tighten
- Snap pressure regulator assembly back in
- Put metal ring back into fuel filter
- Remove existing ground prong and install new one provided
- Push corrugated tubes onto cap
- Connect positive and negative
- Connect fuel filter to bottom of pump
- Put assembly back into sleeve and cup
- Reinstall white clips, perpendicular is locked
- Reconnect filter Y hose
- Make sure gasket is on the bottom side of cup
- Fish assembly back into tank and fasten, making sure the mark you made is pointing towards the battery, as shown in previous photos
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- Install throttle bodies with Yamabond
- Reinstall radiator and hoses
- Reinstall tank, hoses, throttle cable, wiring harness. Everything installed in reverse sequence
- Install Power Commander modules and accessories
- Run all remaining wires and fuel lines
- Don't forget to fill antifreeze and oil once everything is put back together!!
- Joined
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- 2020 Sidewinder SRX
- Joined
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- 2020 Sidewinder SRX
Here are the Vids from some of the final tunes.
Yamadog
Lifetime Member
Well where are the numbers? I think it would be interesting to look at the hp from the same dyno for 2 of them at 12#'s mine has low comp pistons vs head shim
Yamadog
Lifetime Member
The blue line is at I believe 9#'s and the red is at 12#'s
- Joined
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- 2020 Sidewinder SRX
I will see if Allen can send me that graph over.
bleedyamaha
TY 4 Stroke Master
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Wow all that looks overwhelming. I was hoping to do my own install If I buy a 190 kit.
Yamadog
Lifetime Member
oh the 190 kit is no problem its when you go above 6#'s of boost. He is now at about 252 hp
- Joined
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oh the 190 kit is no problem its when you go above 6#'s of boost. He is now at about 252 hp
Exactly... 190 is still a job but nothing like this.
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