Nytro, Apex, & RX-1 
Stage II Supercharger Specs

Stage II Specifications:

• Centrifugal Supercharger - Exactly the same as the compressor side of a turbo. The Compressor's impeller is driven directly by the motor (where a turbo's compressor impeller is driven by a second impeller in the exhaust). 

  • Typical Impeller Speed 120,000 rpm.

  • Internal speed multiplication is 9.5:1. This is accomplished with a state-of-the-art "traction drive" unit. It functions like an automatic car transmission using sun, planets and ring. There are no internal gears, belts or other types of mechanical connections. This eliminates the need for bearings or bushings running at 120,000 rpm (like a turbo).

  • Input speed to the blower is 12,500 rpm well under the maximum rating of the belt. 

  • The stage II unit is capable of boost numbers over of 18psi.

  • This unit carries a 1 year plus warranty for off road application.  

  • Lubrication is accomplished with a special high grade type of transmission fluid. The unit utilizes positive pressure created by boost as well as an internal pump to circulate the fluid. This is a closed loop system. Includes Billet reservoir with temp sensor, filter and oil cooler. 

• Belt Drive System - Connected directly to the crank and transmitted to the blower via a cog belt drive system.

  • A stub shaft is connected to the end of the crankshaft on the magneto side of the motor. Strength is a null issue. The stub shaft is stronger and more durable than the crankshaft itself. Internal crank end sizing and bearing will support 8 times the horsepower that is actually used to drive the blower. 

  • The OEM sidecover is not modified. Simply unscrew a plastic plug and screw in our Viton seal unit. It's that simple.

  • Gates Industrial Rubber Division custom manufactures a special carbon fiber belt for Mountain Performance.

  • A cog belt design was chosen due to long life, no chance of slippage due to tension or snow and minimal tension requirements. Belt construction is the same design used in snowmobile belt drives. Although only 20mm wide (snowmobile belt drives are 60mm wide), our belt sports a safety factor 3-1/2 times higher than the industry accepted belt drive, since we are transmitting less than 20HP and belt drives transmit over 200HP.

• The systems plumbing, although simple, is 1st class. All components are aluminum with stainless clamps.

  • The Charge Air Tube (or CAC tube) is mandrel bent aluminum and less than 12" long. All connections are made with silicone hose and stainless steel Tee Clamps. 

  • The Intercooler / Airbox design is also constructed entirely of aluminum and utilizes and intercooler core capable of supplying motors over 300HP. The unit is placed directly under the front hood vent for maximum cooling efficiency. Pressure drop across the core is less than ½lb. Air intake temperatures are typically between 10 and 30 degrees above the ambient air temperature.

  • Connection to the OEM carbs (or throttle bodies) is an optimized design employing silicone hose & stainless constant tension clamps. This design can sustain boost numbers in excess of 35 psi.

• RX-1employs an Automotive EFI style Fuel system.

  • Our system employs the same electric pump used on OEM Ford automobiles. Durability meets stringent ISO-9000 and automotive A-100 quality standards.

  • Power to the pump is electronically controlled. It only supplies the pump power while the motor is actually running  or while the engine is cranking to start. If the motor stops, so does the fuel pump; no key or kill switch required! It's all automatic. 

    • All electrical connections are made by plugging into or bolting onto the OEM wiring system. No splices are used and no wires are cut! 

  • The entire fuel system uses Extra Heavy Duty Tygon™ fuel line. This line maintains extreme flexibility under the harshest temperature changes and is impervious to any fuel or fuel additives. All connections are made with constant tension stainless hose clamps.

  • OEM soft rubber Tee connections to the carbs are eliminated and replaced with internal o-ring billet aluminum Tees. These are also available as an upgrade kit for other applications.

• Apex Fuel System for Stage 2B and Stage 3

  • Our system employs a high high pressure automotive electric EFI pump which is also used on OEM Chevrolet automobiles. Durability meets stringent ISO-9000 and automotive A-100 quality standards.

  • Power to the pump is electronically controlled. All electrical connections are made by plugging into or bolting onto the OEM wiring system. No splices are used and no wires are cut! 

  • The entire fuel system uses Extra Heavy Duty Parker Fuel Line rated at 300psi. This line maintains extreme flexibility under the harshest temperature changes and is impervious to any fuel or fuel additives. All connections are made with constant tension stainless hose clamps.

  • A patented closed loop electronic fuel pressure control system controls the fuel pressure. The computer monitors the fuel rail pressure and automatically adjusts the pressure as required by the the EFI controller.
    

• Exhaust. 

  • The system is compatible with all after market exhaust systems, but advertised horsepower numbers are achieved through MPI's custom quiet exhaust. All dyno numbers and other advertised performance statistics were obtained through our exhaust system. Call to discuss the use of OEM exhaust.

• Oiling systems.

  • The OEM oil tank is replaced with an aluminum tank. The tank mounts in exactly the same location using the same bolts as the stock tank. All connections to the tank remain stock including all hoses, dip stick and low oil warning system. The new tanks capacity is only 5% less less than the OEM tank.

  • The blower's oiling system is self-contained.

    • It employs an external filter, reservoir and oil cooler. This allows the owner to easily check the oil level. Oil changes are recommended once a year or every 50,000 miles (which ever comes 1st).

    • The blower system includes an electronic temperature warning circuit that ties directly into the sleds electrical system. In case of an overheat situation both a warning symbol and the check engine symbol illuminate in the OEM Multifunction display.

• Blower and drive mounting.

  • Components are made of billet aluminum and connect 100% into existing bolt holes.

  • There are NO holes placed in any OEM component (not even a bolt hole). Only 2 3/16" rivet holes are added. No hole saws, no sawsalls just a 3/16" drill bit. (Vector does require 1 hole through the delta box).

  • The system includes a new Odyssey Gel Cell Battery. This piece weighs less than the OEM battery and offers the same performance. There is no liquid acid to spill allowing the battery to be mounted in any orientation. It carries a full 2 year warranty (unlike the OEM unit).