Yamaha Rhino 660 turbo intercooler

Yamaha Rhino 660 turbo intercooler
Made by:
MC Xpress AB, Sweden
- Supreme of the extreme
Now we can offer a turbo kit to this side by side machine!
Many of our customers and turbo dealers are often asking us:
When shall you start making turbo kits to ATV and 4-wheelers?
For several years we have thought about doing this.
We have earlier installed turbo on three different one cylinder 4-stroke engines.
The first test was made on a Honda XR 650, second a Polaris Predator 500 Quad racer and the
last turbo we made was a Arctic Cat 500 ATV-machine.
The result was O.K, but not as good as expected on either of them.
A one cylinder engine makes very strong pulses on both intake and exhaust.
This makes it difficult to get a good result we must admit.
But we did not give up. We just had to work harder.
This spring we started to make turbo-tests on the Yamaha Rhino 660.
We spent a lot of time to learn more about how to turbo charge one cylinder engines.
Everything was not as expected.
One thing that we saw was that the turbo size was very important.
The location of the turbo is important too.
We tested everything we could imagine before we where satisfied.
The result became better than we ever expected. The power raised from the stock 30 hp on the
rear wheel to over 60 hp. And the turbo pressure was only 0,8 bar. (= about 11 PSI)
This is better power gain than the average 4 stroke engine produce at this pressure.
And the turbo start to boost very early too. The turbo lag doesn’t almost exist.
Now we are so satisfied that we proudly can offer a kit to the Yamaha Rhino.
We made for instance tests by installing some different turbos after the muffler.
More constant gas flow to the turbine wheel was the benefit. Other parameters that was not
as good made us not to choose this location.
The power was tested on the rear wheel. To prevent the Rhino from spinning, we had to add
some extra weight above the rear wheel, in this case =Jon.
The clutch had to be modified.
Two extra washers make the spring pressure harder.
A very modern Mitsubishi turbo charger was the best choice we tested.
The stock muffler could be used.
The exhaust sound is very low thanks to this.
But the end tip of the stock muffler had to be changed to a bigger one to get the right
performance.
The turbo itself acts also as a noise reducer on both intake and exhaust.
This makes the Rhino turbo very comfortable to ride.
The air filter and intercooler are located under the driver’s seat.
A cooling fan is located on the other side of the intercooler. This makes the intake air even
colder with more power and higher reliability as a result.
A blow off valve is located on the tube after the intercooler.
In front of the carburettor a big plenum is located. This makes the pulses less strong.
Compressed air is forced thought the carburettor. This works excellent. Two jets have to be
changed to get the right air/fuel mixture.
A new fuel pump and fuel pressure regulator have to be installed.
A complete Yamaha Rhino MCX turbo kit.
A thicket head gasket is included to get lower compression ratio and prevent the engine to
detonate.
(Improvements and changes of the parts may be done after the photo has been taken.)
Manufacturer and EU-distributor.
MC Xpress AB
Norra Altervägen 821
945 92 Altersbruk
Sweden
Tel:
+46 911 202005
Fax:
+46 911 202008
www.mcx.se
[email protected]
Distributor in USA:
High Altitude boost
10995 Country road 194
81201 Salida CO
USA
Tel:
+1 719 539 3989
Fax:
+1 719 539 3281
www.haboost.com
[email protected]
Distributor in Canada:
Prince George Yamaha
1001 – 20th Avenue
Prince George, BC V2L 5K2
Canada
Tel:
+1 250 562 4151
Fax:
+1 250 562 9429
www.princegeorgeyamaha.com
[email protected]
[email protected]