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  • .21XZ-R VII On-Road

    By O. S. Engines |
    Product Number OSMG2042
    $0.00

    y Please allow 5-7 days for free in store pick up or flat rate shipping.
    1/10 Desert Truck Rtr
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    This is the O.S. 21XZ-R Version II ABC Engine with 21M Carburetor for 1/8 scale On-Road Vehicles. ****** Because of the expressed racing nature of this engine, ...*More

    This is the O.S. 21XZ-R Version II ABC Engine with 21M Carburetor for 1/8 scale On-Road Vehicles. ****** Because of the expressed racing nature of this engine, ****** ****** it is NOT covered by the O.S. 2 Year Warranty ****** ****** per page 8 of manual. ****** jxs 07/25/11 ir/jxs*Less

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    Key FeaturesFull Specs Comments/Reviews
    • Brass cylinder liner that is Chrome plated
    • Tungsten-weighted silicone filled crankshaft creates optimum balance for consistent low and mid speed torque ABC piston and liner construction Aluminum piston fitted to a
    • Bore:0.640 (16.27 mm)
    • Displacement:0.213 cu in (3.49 cc)
    • Distance Between Mounting Holes Opposite Side:1.45 (37mm)
    • Distance Between Mounting Holes Same Side:0.83 (21mm)
    • Distance from Backplate to Front Bearing:2.6 (65.6mm)
    • Distance from Center of Crankshaft to Backplate:0.85 (21.6mm)
    • Metering Needle:Rotate until slotted head is 0.5mm away from ball
    • Mixture Control Valve:Rotate until slotted head is flush with
    • Needle Valve:Approximately 3 turns open from fully closed
    • Power Output:2.75 PS, 2.71 HP @ 33, 000 RPM
    • Practical RPM:4, 000-45, 000
    • Stroke:0.661 (16.8mm)
    • Throttle:Approximately 0.5mm open from factory setting with
    • Weight:12.06oz (343g)
    • Width of Mounting Tabs:1.8 (45mm)
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