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#1 Re: General Discussion about Yamaha Rhinos » 2008 Rhino 700 needed for turbo install » 2008-02-29 19:41:49

We have developed a turbo system and need to verify fit and installation instructions on a current production Rhino. If you have a new Rhino and want a turbo system installed for only the material costs please cotact us.

Turbo Specialties (888) 930-2424. We are located in Cerritos, CA and would prefer that you deliver the Rhino to us, and that we can have it for a few weeks while fitment and tuning is verified.
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#2 Re: Yamaha Rhino Performance Mods » more power » 2007-09-13 21:15:47

We get many questions regarding the reliability of turbo charging the 660 rhino motor - We have a customer that has put 1200 miles on this kit in 3 months and it is running as strong as on day one. He is running 10 lbs of boost compared to our recommended max of 9 lbs of boost. This boost level delivers over 40 HP to the rear wheels. An aftermarket clutch would be the next improvement to this application and could deliver an additional 5 HP to the rear wheels compared to the stock clutch. These are all bolt on improvements. There are also 8.5 compression ratio aftermarket pistons that will allow the motor to be run at even higher level of boost, but also require more mechanical expertise to install.
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#3 Re: Yamaha Rhino Performance Mods » more power » 2007-08-30 15:16:31

This system is a "draw through" apllication as compared to a "blow through" application. Carbs. are designed to have air drawn through them so this system does not try and adapt a carb to an application that it was not intended to do. Further, as the air and fuel are vaporized this mixture cools so the air/fuel charge is colder than the ambient air. We have seen a 60F drop in temp. Therefore, when the air/fuel charge is compressed in the turbo and the temperature rise of 100F occurs at 9 lbs. of boost the engine still only sees 140F when operating in 100F weather.   An intercooler is typically used on a blow through system to cool the air before it gets to the carb. The amount of piping on either system needs to be pressurized before the engine benefits from the boost, and this is the "turbo lag" people refer to.  So to answer your question of why no intercooler on this sytem.... It is not required, and would add additional cost and "turbo lag".
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#4 Re: Yamaha Rhino Performance Mods » more power » 2007-08-16 09:19:23

We need to support our dealers, but if they send a copy of their sales receipt between now and the end of September we will send them a free boost gauge. Just reference "SideXSideForum" promo on the paperwork.
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#5 Re: Yamaha Rhino Performance Mods » more power » 2007-08-09 21:20:15

The turbo packs more air & fuel into the engine. Normal air pressure is 14.7 psi so when a turbo runs at 14.7 lbs of boost it theoretically would pack twice as much air and fuel into the engine and the HP would increase 100%. This relationship lets one calculate what HP increase should be achieved (e.g. 6lbs boost divided by 14.7 equates to a 40.8% increase).

The turbo at 6 lbs. of boost will not make the Rhino 40% faster, the top speed is a function of engine RPMs and the drive train gear ratio (transmission, differential gearing and tire size). It will allow the rhino to reach its top speed quicker (think of drag racing).

The turbo kit referenced installs in 6-8 hours using hand tools and drilling a few holes. Race gas is also recommended when using this kit. Price is set by the dealers, but is roughly the price of doing a 686 engine.

Pros and cons of these two approaches:
Turbo-
Pros - when cruising the turbo is not building additional pressure on the engine (a high compression motor still has the same compression even when cruising); A five minute adjustment can increase or decrease the HP on a turbo system. It can be transferred to another vehicle.
Cons- Adds a level of complexity to the equipment
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