Sept 17th
-ROAR Off-Road Fuel Monster Truck Nationals
-ROAR Paved Oval Nationals
Sept 25th
-Tamiya TCS North American Finals
> OS .28XZ Engine - Rip it up
Designed for serious racers, this bad boy was built for fine-tuning and significantly increased power.
Features:
-The larger head aids in cooling and is a 2-piece construction with inner head button.
-A sealed front bearing and high-performance inner bearing are part of the new crankcase design.
-The high-performance con rod features oiled bushings while the three needles enhance fine-tuning on the 21J slide-valve carb.
-A high-performance P3 hot turbo plug is included.
-The Mark Pavidas Edition Tuned Pipe is the perfect accessory for the .28TZ.
Specs:
-Displacement: 0.284 cu in (4.65 cc)
-Bore: 0.728 in (18.5 mm)
-Stroke: 0.681 in (17.3 mm)
-Practical rpm: 4000-38,000
-Power Output: 3.31 hp @ 32,000 rpm
-Weight: 13.1 oz (375 g)
Source: www.osengines.com
> Cool Nitro Engine Tuning Videos
Part 1
Part 2