IHI RHB31 Turbo Charger

The next major upgrade to the Dry Lake Racer is a turbo charger!

Casing Numbers

The casing numbers should translate to the design parameters of the turbo. I need to decipher these to know if the turbo itself can be used with the scooter or if I need to convert it to a supercharger.

Turbine Housing = K 2/4 2H C7P

Bearing Housing = M 8 SE 20

Compressor Housing = VZ21 - Serial 0935351034

IHI Info

http://www.ihi-turbo.com/turbo_RHE-RHF.htm

RHF is a replacement for RHB (so should be similar)

Ebay Blurb (not my blurb)

"Up for auction is one ideal little World's Smallest turbocharger for a  QUAD,  MOTORCYCLE,  RHINO, SNOWMOBILE, JET SKI  Etc.  ( In this case,   size really matters!!!) This super little turbocharger is the smallest turbo that is manufactured and commercially available only through our facility, (DON'T GET FOOLED! BE VARY CAREFUL OF CHEAP LOOK ALIKES OR COPIES BEING SOLD   THAT ALL BLOW UP! SOME OF THESE CHARACTERS EVEN GO SO FAR AS TO USE OUR PHOTOGRAPHS AND ART WORK!)  Their in perfect new condition and have not been installed,  (removed from packaging for photographs only). The only thing we can find wrong with it is, well it's just too neat to part with. The part numbers etc. are MODEL # TRU00031/PART # PT-31-001IHI Model # RHB31/VZ21. This super little turbo can work on very low displacement engines. From about 190 cc to about 900cc or so and can flow about 125 HP. They are currently the favorite choice of people building turbo kits for the Rhino and other small 4X4's vehicles. (see flow map below). The front of the POLISHED compressor housing is machined to mount a carburetor, hose or what ever is appropriate for your particular toy. The center section or bearing housing on this unit is the multi position type that is far superior to the normal ones seen on most OTHER TURBOS. This allows you to loosen the clamp bolts and rotate everything to suit your application. You will get the turbocharger assembly, complete with the internal waste gate and pod just as it appears in the photographs. This  turbocharger will definitely effect a Massive Horsepower and Performance Gain on your toy."

Fitting Notes

• • Converting to supercharger

    • • likely ratio of flywheel to shaft - 50/10 (5/1)

      • Flywheel 9,000rpm = 45,000rpm

        • http://www.aaperf.com/rotrex.html

• I need to build a dedicated oil pump system (Good notes: http://www.rbracing-rsr.com/oilsystems.htm

  • Gaskets?

From the web

Used Turbo Info - Part One. Cheap hairdryers from the wrecker. By Michael Knowling

IHI RHB31

"The smallest turbocharger we’ve seen fitted to a production engine is the IHI RHB31. This turbo is used on various Japanese Kei-class cars including Suzuki and Daihatsu.

We’re told this particular turbocharger comes from a Suzuki 660cc engine which, like all Kei-class engines, is limited to 47kW. Experience tells us this turbo can be wound up to more than 1.0 Bar of boost and about 75kW – but don’t expect it to last very long. These very small turbos aren’t particularly durable, despite having a water-cooled core.

The compressor inlet of this little ‘un is less than 30mm and the discharge nozzle measures 26mm diameter. A 2-bolt flange is used at the compressor inlet and discharge nozzle – there are no slip-over hose joints. The turbine wheel is fed exhaust gasses through a 24mm diameter passage in the triangular mounting flange. Three bolts attach the turbine to the exhaust manifold and four bolts connect the dump pipe.

The extremely compact dimensions of this turbocharger allow it to be mounted in very tight spaces. If you’re keen, you could probably squeeze a pair of these turbos under the bonnet of a N12 Nissan Pulsar/EXA turbo. Alternatively, you might have a small-to-medium size motorcycle you want to turbocharge..."