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21XR-B Version II Car Engine 21XR-B Version II Car Engine 21XR-B Version II Car Engine 21XR-B Version II Car Engine 21XR-B Version II Car Engine
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Bore: 0.64 in (16.27 mm)
Carb Type: O.S. 21J3-I slide valve w/7mm & 8mm restrictors
Crankshaft Threads: UNF1/4-28
Cylinders: Single
Displacement: 0.213 cu in (3.49 cc)
Engine (Only) Weight: 13.40 oz (380 g)
HP: 2.45 PS 2.42 HP @ 33,000 rpm
Height: 3.4 in (86.5 mm) bottom of mounting tabs to top of cylinder head
Length: 2.5" (64.5 mm) from backplate to front bearing
Plug Type: Turbo P-3 Glow Plug
RPM Range: 4,000 - 40,000 rpm
Recommended Fuel: 10-30% nitro content, 20% recommended for break-in
Stroke: 0.66 in (16.8 mm)
Total Weight: 12.5 oz (353 g)
Type: 2-stroke, glow powered 1/8 scale .21 cu in buggy engine
Width: 1.8 in (45 mm) at mounting tabs

Parts Listing

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