O.S. 18TZ-TX ABC Turbo w/11L Rotary Carb

Tower Stock# LXHLV9  •  Manufacturer Stock# 11943
O.S. 18TZ-TX ABC Turbo w/11L Rotary Carb (large view)
Notes from our tech department:
This is the O.S. Max 18TZ Turbo Engine with Recoil Starter
and 11L Rotary Carburetor.


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
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)


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


Muffler (exhaust system) depending on vehicle
Starting equipment
Fuel: 5% - 20% nitromethane content
Most of the fuels we carry meet or exceed the lubricant content
required for maximum engine performance and long life. In the past
conventional lubricant content used in fuel was 18%. But with new
advanced technologies, fuels like Red Alert and O'Donnell have a
better quality of lubricants even thought the percentages of
lubricant content are lower. These high tech lubricants provide
exceptional cooling and protection.


Displacement: 0.183 cu in (3.0cc)
Bore: 0.629" (16.0mm)
Stroke: 0.590" (15.0mm)
Practical RPM: 3,000-34,000
Output: 1.8 PS, 1.77 HP @ 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)


This Engine will work in the 2.5 T-Maxx And Revo with the addition
of the 18TM adapter plate (OSMG8984) and (P) shaft crank (OSMG4450)
and some modification to make rotary carb work.

- High Speed: 2 turns out from fully closed per page 18 of manual
- Mixture Control Valve: Slotted head of screw is flush with the
ball link body per page 23 of manual
update 1/22/05
needle settings updated tjt 030705

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