Fuji-Imvac Gasoline Engines

Fuji-Imvac^® BT-86 Twin Gasoline Engine

Features

A compression relief valve on each cylinder allows for easier starting, either manually or by remote control.

A unique one-way overflow/relief valve automatically removes excess fuel that can build up when the engine idles for too long.

The Walbro HDA186 carb features a spring-loaded control arm, along with a heat shield that helps the carb temperature down for more reliable starts.

The Walbro HDA186 carb features a spring-loaded control arm, along with a heat shield that helps the carb temperature down for more reliable starts.

A smaller, more compact design results in a weight of only 6.25 pounds with muffler — nearly 25% lighter than its most popular competitor.

Price point is another exceptional benefit with this engine; customers can save up to $150 compared to other similar-sized gasoline power plants.

Recommended props: 24x12 carbon @ 6400 rpm; 24x10 carbon @ 7400 rpm.

With more power, less weight, and top-quality construction!

If you fly gasoline-powered giant scale aircraft, you probably have strong opinions about how gasoline engines could be improved. So did modeler Seiji Tanabe. And that’s why he founded Fuji-Imvac Engines: to make those ideas come to life. Among Fuji-Imvac engines’ most obvious design advantages is their construction — true chrome cylinders, CNC-machined parts for optimal tolerances — and the avoidance of off-the-shelf components in favor of parts created specifically for Fuji-Imvac engines, such as the mufflers and high-performance Walbro carbs. In addition, by dynamically balancing the engines’ flywheel, prop hub and crankshaft, Tanabe achieved a significant decrease in vibration even at idle...which reduces metal-on-metal friction (and the resulting engine wear), lessens the stress on your model’s airframe, and minimizes electrical noise for fewer radio system glitches. While most gasoline engines force you to choose between easy low-end starting or powerful top-end, Fuji-Imvac engines demand no such compromise. With their Electronic Automatic Timing Advance, you have both! Timing starts low for easy ignition with no backfiring, and advances automatically with increasing rpm to produce more power. With the recommended 40:1 gas/oil mix, Fuji-Imvac engines last up to four times longer than others — and their 3-year warranty protection ensures your satisfaction. If your application calls for a 2-cylinder engine, Fuji-Imvac’s 86cc BT-86 Twin has numerous advantages: compression release valves on both cylinders; a one-way overflow/relief valve that automatically eliminates excess fuel; a compact design that’s fully 25% lighter than its most popular competitor; and a price that’s surprisingly lighter as well! Both Fuji-Imvac engines come well-equipped with mount and Champion RCJ6Y resistor spark plug.

Compression relief valves on both cylinders open to ease starting, but automatically close when the BT-86 catches. Valves can be operated manually, or by remote control for enclosed-cowl installations.