This is the Draked Edition .21 cu in (3.4cc)
Off Road Platinum Engine with Slide Valve Carburetor
and SG (pilot) type Crankshaft from Trinity.

FEATURES: Blueprinted and hand assembled by racer Adam Drake to the same
specifications and state of tune as the engines he builds for the
Triniy/Losi off-road nitro team
ABC cylinder construction ("A"luminum piston w/"B"rass sleeve that is
"C"hrome plated)
5-port plus two bypass ports cylinder liner
Rubber sealed ball bearing
Composite slide valve carburetor with 7, 8 & 9mm diameter inserts
Rear exhaust
Ships in a foam lined wooden case with Adam Drake's signature
printed on it

INCLUDES: Adam Drake Draked .21 cu in (3.4cc) off-road engine with slide valve
carburetor & 9mm inset, pinch bolt to secure carburetor, 0.1mm
exhaust gasket, instruction sheet and wooden case
wooden case

REQUIRES: Car blend nitro fuel with 20-30% nitro content
Air filter, MSFG1660
Glow Plug, can use O.S #8 OSMG2691
Plug wrench, glow starter and track equipment

SPECS: Displacement: .21 cu in (3.4cc)
Maximum Power: 2.7 hp
Ports: 5 plus 2 by-pass
Weight: 13oz (370g)
Crankshaft: 14mm turbo, SG type
Diameter of Exhaust Opening (including gasket): 0.71" (18mm)
Diameter of Carb Opening: 0.65" (16.5mm)
On-Center Mounting Holes, Opposite Side: 1.5" (38mm)
On-Center Mounting Holes, Front to Rear: 0.83" (21mm)
Backplate to Front Bearing: 2.5" (64mm)
Overall Height: 4.3" (109mm)
Height, from top of head to bottom of mount flanges: 3.8" (96mm)
Specs such as Bore, Stroke and RPM not provided