The IL-310V3-4 was the first four-cylinder Inline engine built from the Kolm modular construction system. With the experience gained from his first P51 racer "Galloping Ghost", Otto Widlroither built a new Ghost, this time for the big four-cylinder Inline. He reached his exceedingly ambitious goal to stay below the 25 kg (55 lbs) legal registration limit, although the engine alone accounts for more than 40% of the take off weight!

Not many will be able to copy this feat, but the Kolm IL-310V3-4 is certainly powerful enough for Warbirds and Racers up to 45 kilos (99 lbs). Since 2013 the Kolm IL-310V3-4 has been installed in surprisingly many unusual models and has shown to be a very reliable engine.

The Kolm IL-310V3-4 is optionally available with a brushless electric starter motor, leaving nothing more to be desired. You will find that starting is so realistic, just like on full-size Warbirds, there is first a very slow, slightly stuttering turning of the prop, then gaining speed slowly, and suddenly she fires.

For ease of mounting in various models, besides the standard version, there is one that has a lengthened front crankshaft/crankcase, the so called "Long Edition".

For some of the most frequently encountered Warbirds we supply installation kits with a 3D printed cooling duct. A detailed set of instructions about fitting and cooling the Inline engine will assist you in achieving a perfect installation.

·         Nickel-Silicon plated cylinder surfaces, far lighter than steel cylinder liners guarantee high wear resistance

·         Assembled heat-treated steel crankshaft with Tungsten balance weight inserts

·         Crankshaft supported by six ball bearings

·         Conrods are CNC milled from high strength steel an have a spindled bore surface for the big end needle roller bearings

·         Plain bronze small end bearings

·         A bottom-mounted camshaft is acting on overhead valves by pushrods

·         A light weight, low inertia valve train allows relatively high RPM

·         Crankcase CNC milled from high-strength aerospace alloy

·         Excellent Müller-Microprocessor-Ignition developed by Günter Müller in Germany, now made in Austria by Kolm Engines

·         Valves and pistons are manufactured at Kolm Engines in Austria on modern CNC machines

·         Three Walbro carburetors WT-225 with in sync linkage for throttle and choke

·         Engine length further adjustable by longer and shorter optional prop hubs

·         Rapid spares delivery and repair service from Germany by Toni Clark practical scale GmbH.

Each and every Kolm engine is tested in the factory and run for thirty minutes. Of this test a detailed proof certificate is supplied.