2si 460

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I-2 piston aircraft engine

title: "2si 460" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["air-cooled-aircraft-piston-engines", "two-stroke-aircraft-piston-engines"] description: "I-2 piston aircraft engine" topic_path: "general/air-cooled-aircraft-piston-engines" source: "https://en.wikipedia.org/wiki/2si_460" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary I-2 piston aircraft engine ::

::data[format=table title="infobox aero engine"]

FieldValue
name2si 460
engine_typeTwo-stroke aircraft engine
manufacturer2si
national_originUnited States
::

| name = 2si 460 | image = | caption = | engine_type = Two-stroke aircraft engine | manufacturer = 2si | national_origin = United States | first_run = | major applications = | produced = | number_built = | program cost = | developed_from = | variants_with_their_own_articles =

The 2si 460 is a family of in-line twin-cylinder, two-stroke, single ignition, aircraft engines that were designed for ultralight aircraft.

The basic engine was originally designed and produced by ILO-Motorenwerke of Germany and was later acquired by the AMW Cuyuna Engine Company of Beaufort, South Carolina and marketed under the Cuyuna brand name. Later the engine was marketed by Cuyuna under the Two Stroke International (2si) brand. Cuyuna no longer markets engines for aircraft use, although the 460 is still in production as a Diesel/multifuel or gasoline industrial, marine and sport vehicle engine.

Development

The 460 is a conventional twin-cylinder engine that weighs 59 lb in its F35 aircraft version. The engine features single capacitor discharge ignition, piston porting, tuned exhaust system, one or two slide venturi-type carburetors, fuel pump, a cast iron cylinder liner, ball, needle and roller bearings throughout. The aircraft version was offered with cog belt drive or a gearbox reduction system. Starting is electric starter or recoil starter.

Variants

;460-F35 :Gasoline aircraft engine, single carburetor, 35 hp at 6000 rpm, weight 59 lb (discontinued). ;460-F40 :Gasoline aircraft engine, single carburetor, 40 hp at 6500 rpm, weight 70 lb (discontinued). ;460-F45 :Gasoline aircraft engine, dual carburetors, 45 hp at 6750 rpm, weight 70 lb (discontinued). ;460 MF :Diesel/multi-fuel engine for marine and industrial applications, 37 hp at 6000 rpm, weight 78.5 lb without gearbox. ;460F-35 :Gasoline industrial engine and sport vehicle engine for auto racing, kart and All-terrain vehicle applications, single carburetor, 35 hp at 6000 rpm, basic weight 55 lb. ;460FE-35 :Gasoline industrial engine and sport vehicle engine for auto racing, kart and ATV applications with electric start, single carburetor, 35 hp at 6000 rpm, basic weight 55 lb. ;460L-50 :Gasoline marine engine powering a jet pump, 50 hp at 6750 rpm.

Applications

Specifications (460-F35 aircraft engine)

and start a new, fully-formatted line with -- |ref = Cliche |type = Twin-cylinder, two-stroke aircraft engine |bore = 69.5 mm |stroke = 60.0 mm |displacement = 455 cc (27.77 cu in) |length = 14.5 in |diameter = |width = 16.0 in |height = 16.0 in |weight = 59 lb |valvetrain = piston porting |supercharger = |turbocharger = |fuelsystem = |fueltype = Minimum 92 octane |oilsystem = premixed oil and fuel |coolingsystem = fan cooled |power = 35 hp at 6000 rpm |specpower = |compression = |fuelcon = |specfuelcon = |oilcon = |power/weight =

|designer = |reduction_gear = cog belt or optional gearbox

|general_other = |components_other = |performance_other =

References

References

  1. Cliche, Andre: ''Ultralight Aircraft Shopper's Guide'' 8th Edition, page G-2 Cybair Limited Publishing, 2001. {{ISBN. 0-9680628-1-4
  2. (n.d.). "2si Company Profile".
  3. (n.d.). "Diesel / Multi-fuel Engine - Model 460 MF - Marine and Industrial Applications".
  4. (n.d.). "Engine Models 460F-35 and 460FE-35 Industrial Configuration".
  5. (n.d.). "460L-50 Engine & JP-2 Jet Pump Package".
  6. (n.d.). "MARINE ENGINE MODEL 460L-50".
  7. (n.d.). "Engine Models 460F-35 and 460FE-35 Sport Configuration".
  8. Purdy, Don: ''AeroCrafter - Homebuilt Aircraft Sourcebook'', page 69. BAI Communications. {{ISBN. 0-9636409-4-1

::callout[type=info title="Wikipedia Source"] This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page. ::

air-cooled-aircraft-piston-enginestwo-stroke-aircraft-piston-engines