This is the O.S. Max 18TZ-TX Turbo Engine with Recoil Starter and 11L Rotary Carburetor.

Features:

• Oversize case fins dissipate heat to keep engine temperatures lower
• Five port cylinder liner for increased air flow
• 12mm rear bearing lessens vibration and allows engine to handle more torque
• Rotary carb
• Small diameter recoil design for easier manifold installation
• Super-hot turbo P3 glow plug for more power and improved fuel economy
• Rear exhaust with a round port
• Two-piece head design (inner head or head button and outer head)

Includes: One 18TZ turbo engine with threaded shaft, 11L rotary carburetor, P3 glow plug, exhaust seal o-ring, drive washer and instructions

Requires:
Muffler (exhaust system) depending on vehicle
Starting equipment
Fuel: 5% - 20% nitromethane content

Specifications:
Displacement: 0.183 cu in (3.0cc)
Bore: 0.629" (16.0mm)
Stroke: 0.590" (15.0mm)
Practical RPM: 3,000-34,000
Output: 1.8ps @ 29,000 RPM
Weight: 9.3oz (264g)

Distance between mounting holes same side:             0.43" (11mm)
Distance between mounting holes opposite side:         1.2" (31.4mm)
Distance from end of crankshaft to drive washer:      .051" (13mm)
Distance from center of engine to front of crankcase:  1.4" (34.8mm)
Distance/bottom of mounting flanges/top of cylinder head:3.2"(81.2mm)
Distance/back of recoil to front of drive washer:     2.96" (75.43mm)
Width of mounting flanges:                             1.5" (39mm)
Length of exhaust flange:                              0.24" (6mm)