Lycoming IO-390#Specifications (IO-390-X)

The engine was originally conceived in the 1970s as the IO-400-X, but the project was never pursued.{{cite web|url = http://www.lycoming.textron.com/news-and-events/featured-stories/archive/io-390-series-engine.html|title =Lycoming's Certified IO-390 Series Engine|access-date = 2009-01-07|last = Lycoming Engines|authorlink = |year = 2008 |archive-url = https://web.archive.org/web/20120213105005/http://www.lycoming.textron.com/news-and-events/featured-stories/archive/io-390-series-engine.html |archive-date = 13 February 2012}}

The IO-390 family of engines, which Lycoming refers to as the IO-390-X, produce {{convert|200|hp|kW|0|abbr=on}} to {{convert|215|hp|kW|0|abbr=on}}. The IO-390 was developed from the similar IO-360 engine, {{fact span|by using cylinders from the IO-580|date=October 2020}} to increase the O-360's cylinder bore. (Although the IO-390 cylinder assembly{{cite web|url=https://www.lycoming.com/sites/default/files/IO-390-A%20Parts%20Catalog%20PC-IO-390-A.pdf|title=IO-390-A Series Engine Illustrated Parts Catalog|publisher=Lycoming|page=25|quote=Part number 16A26081, Cylinder and Head Assembly, Nitrided|accessdate=2022-07-21}} is not the same part number as the IO-580,{{cite web|url=https://www.lycoming.com/sites/default/files/IO-580-B1A%20Parts%20Catalog%20PC-701-1.pdf|title=IO-580-B1A Parts Catalog|page=3-3|publisher=Lycoming|accessdate=2022-07-21|quote=Part Number 16A22887, Cylinder Assembly}} the cylinder barrels of both have a 5.318 bore and 4.375 stroke dimension.)

It features a tuned induction system, roller tappets and Slick Start ignition. The engine has a fuel injection system which meters fuel in proportion to the induction airflow with fuel vaporization taking place at the intake ports. The engine has a displacement of {{convert|390|cuin|L|2|abbr=none}}. The cylinders have air-cooled heads.

The IO-390 was first introduced at AirVenture 2002. It has a factory recommended TBO of 2000 hours and requires a dynafocal engine mount.

The IO-390 was initially marketed through Lycoming's custom engine subsidiary, Thunderbolt Engines, prior to the engine's certification and was at that time only available for installation on non-certified aircraft. The IO-390 was certified on 30 March 2009 to FAR 33.{{cite web|url = http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/6268f8dc27fbfc98862580b40060457a/$FILE/ATTPV8EP.pdf/E00006NY_REV6.pdf|title = TYPE CERTIFICATE DATA SHEET NO. E00006NY Revision No. 6|access-date = 29 January 2017|last = Federal Aviation Administration|authorlink = |date=25 January 2017|archive-url = https://web.archive.org/web/20170202064224/http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/6268f8dc27fbfc98862580b40060457a/$FILE/ATTPV8EP.pdf/E00006NY_REV6.pdf|archive-date =2 February 2017}}

In January 2009 the base price of the IO-390-EXP version was USD$32,650.00.{{cite web|url = http://www.lycoming.com/thunderbolt_configurator/|title = Thunderbolt Engine Configurator|access-date = 2009-01-06|last = Lycoming Engines|authorlink = |date=January 2009 |archive-url = https://web.archive.org/web/20110714005855/http://www.lycoming.com/thunderbolt_configurator/ |archive-date = 14 July 2011}}

In November 2009 Lycoming announced that it had obtained an FAA Supplemental Type Certificate to replace the originally fitted Lycoming O-360 engines in the Mooney M20E, M20F and M20J with a new or remanufactured IO-390-A3A6 engine.{{cite web|url = http://www.avweb.com/avwebflash/news/LycomingOffersNewEngineOptionForLegacyMooneys_201556-1.html|title = Lycoming Gets IO-390 STC For Legacy Mooneys |access-date = 2009-11-15|last = Grady|first = Mary|authorlink = |date=November 2009}} Also on November 12, 2009 Commander Aircraft received an STC for its model 112B using the MTV-12-B/188-59b propeller.{{cite web|url = http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgstc.nsf/0/2D1F485A3FBB56BF8625767F007BD566?OpenDocument&Highlight=sa00291bo|title = Supplemental Type Certificate, STC Number: SA00291BO|access-date = 30 March 2014|last = Federal Aviation Administration|date = 12 November 2009}}

;IO-390-X

:Four-cylinder, fuel-injected, horizontally opposed, air-cooled direct drive, {{convert|390|cuin|L|2|abbr=none}}, {{convert|210|hp|kW|0|abbr=on}} at 2700 rpm, dry weight {{convert|308|lb|kg|0|abbr=on}}, The "X" designation is a generic indicator for all engines in the family.

;IO-390-EXP

:Four-cylinder, fuel-injected, horizontally opposed, air-cooled direct drive, {{convert|390|cuin|L|2|abbr=none}}, {{convert|210|hp|kW|0|abbr=on}} at 2700 rpm, dry weight {{convert|308|lb|kg|0|abbr=on}}, non-certified engine for experimental aircraft assembled by Lycoming's Thunderbolt division.{{cite web |title=How to Buy: For Experimental Pilots - Lycoming |url=http://www.lycoming.textron.com/how-to-buy/for-experimental-pilots.html |date=22 March 2012|archive-url=https://web.archive.org/web/20120322015029/http://www.lycoming.textron.com/how-to-buy/for-experimental-pilots.html |archive-date=2012-03-22 }}

;IO-390-A1A6

:The initial certified version: four-cylinder, fuel-injected, horizontally opposed, air-cooled direct drive, {{convert|390|cuin|L|2|abbr=none}}, {{convert|210|hp|kW|0|abbr=on}} at 2700 rpm. This model includes provisions for a single-action controllable-pitch propeller. Certified 30 March 2009.

;IO-390-A1B6

:Certified version: four-cylinder, fuel-injected, horizontally opposed, air-cooled direct drive, {{convert|390|cuin|L|2|abbr=none}}, {{convert|210|hp|kW|0|abbr=on}} at 2700 rpm. Same as the A1A6, except that the propeller governor is located on left front of crankcase. Certified 21 January 2010.

;IO-390-A3A6

:Certified version: four-cylinder, fuel-injected, horizontally opposed, air-cooled direct drive, {{convert|390|cuin|L|2|abbr=none}}, {{convert|210|hp|kW|0|abbr=on}} at 2700 rpm. This model includes provisions for a single-action controllable-pitch propeller. This model is similar to the A1A6 but has its propeller flange bushings reindexed. Certified 27 August 2009.

;IO-390-A3B6

:Certified version: four-cylinder, fuel-injected, horizontally opposed, air-cooled direct drive, {{convert|390|cuin|L|2|abbr=none}}, {{convert|210|hp|kW|0|abbr=on}} at 2700 rpm. Same as the A3A6 except that the propeller governor is located on left front of the crankcase. Certified 5 April 2012.

;IO-390-C1A6

:Certified version: four-cylinder, fuel-injected, horizontally opposed, air-cooled direct drive, {{convert|390|cuin|L|2|abbr=none}}, {{convert|215|hp|kW|0|abbr=on}} at 2700 rpm. This model is similar to the IO-390-A1A6, except with a lightweight oil sump, cold air induction housing, tuned intake pipes and an RSA-10 fuel injector. Certified 25 January 2016.

;IO-390-C1B6

:Certified version: four-cylinder, fuel-injected, horizontally opposed, air-cooled direct drive, {{convert|390|cuin|L|2|abbr=none}}, {{convert|215|hp|kW|0|abbr=on}} at 2700 rpm. This model is the same as the C1A6, except that the propeller governor is located on left front of the crankcase. Certified 25 January 2016.

;IO-390-C3A6

:Certified version: four-cylinder, fuel-injected, horizontally opposed, air-cooled direct drive, {{convert|390|cuin|L|2|abbr=none}}, {{convert|215|hp|kW|0|abbr=on}} at 2700 rpm. This model is the same as the C1A6, except that the propeller flange bushings are reindexed. Certified 25 January 2016.

;IO-390-C3B6

:Certified four-cylinder, fuel-injected, horizontally opposed, air-cooled direct drive, {{convert|390|cuin|L|2|abbr=none}}, {{convert|215|hp|kW|0|abbr=on}} at 2,700 rpm, dry weight 296 lb (134 kg). This model is the same as the C3A6, except that the propeller governor is located on left front of the crankcase. Used on Cirrus SR20 G6.{{Cite web|url=https://cirrusaircraft.com/aircraft/sr20/|title=Cirrus Aircraft {{!}} SR20|last=Aircraft|first=Cirrus|website=cirrusaircraft.com|language=en-US|access-date=2017-01-30}}

;AEIO-390-A1A6

:Certified version: aerobatic, four-cylinder, fuel-injected, horizontally opposed, air-cooled direct drive, {{convert|390|cuin|L|2|abbr=none}}, {{convert|210|hp|kW|0|abbr=on}} at 2700 rpm. This model is the same as IO-390-A1A6, except that it is equipped with an inverted oil system kit for aerobatic flight. Certified 5 April 2012.

;AEIO-390-A1B6

:Certified version: aerobatic, four-cylinder, fuel-injected, horizontally opposed, air-cooled direct drive, {{convert|390|cuin|L|2|abbr=none}}, {{convert|210|hp|kW|0|abbr=on}} at 2700 rpm. This model is the same as IO-390-A1B6, except that it is equipped with an inverted oil system kit for aerobatic flight. Certified 5 April 2012.

;AEIO-390-A3A6

:Certified version: aerobatic, four-cylinder, fuel-injected, horizontally opposed, air-cooled direct drive, {{convert|390|cuin|L|2|abbr=none}}, {{convert|210|hp|kW|0|abbr=on}} at 2700 rpm. This model is the same as IO-390-A3A6, except that it is equipped with an inverted oil system kit for aerobatic flight. Certified 5 April 2012.

;AEIO-390-A3B6

:Certified version: aerobatic, four-cylinder, fuel-injected, horizontally opposed, air-cooled direct drive, {{convert|390|cuin|L|2|abbr=none}}, {{convert|210|hp|kW|0|abbr=on}} at 2700 rpm. This model is the same as IO-390-A3B6, except that it is equipped with an inverted oil system kit for aerobatic flight. Certified 5 April 2012.

File:VansRV-8N4280Kphoto1.jpgs have been fitted with the IO-390 engine]]

;Amateur-built aircraft

• Bearhawk Companion
• Glasair Sportsman
• Ibis GS-750 Grand Magic
• Lancair Barracuda
• Lancair ES
• MSW Votec 221
• Pipistrel Panthera
• Van's Aircraft RV-7
• Van's Aircraft RV-8
• Van's Aircraft RV-14
• Van's Aircraft RV-15{{cite web|url= https://www.kitplanes.com/vans-rv-15-on-top/|title= Van's on Top|access-date= 29 July 2022|last= Dye|first= Paul|work= KitPlanes|date= 25 July 2022|archive-url= https://archive.today/20220726134921/https://www.kitplanes.com/vans-rv-15-on-top/|archive-date= 26 July 2022|url-status= live}}
• Whisper X350 Generation II

File:Mooney M20J.jpg can have an IO-390-A3A6 installed under an STC]]

File:Integral R.jpg

;Certified aircraft

• Aura Aero Integral R - aerobatic {{convert|210|hp|kW|0|abbr=on}} - certified in 2024{{cite web|url=https://www.aerospacetestinginternational.com/news/aura-aero-achieves-certification-of-integral-r-aircraft.html|title=Auro-Aero Achieves Certification of Integral R aircraft|date=2024-12-20|access-date=2024-12-28|author=Ben Sampson}}
• Cessna 177RG - available in July 2009 under an STC{{cite web|url = http://www.avweb.com/news/airventure/EAAAirVenture2009_ASTMComplianceForCessnaSkyCatcher_200816-1.html|title = Cessna News Update: ASTM Compliance For SkyCatcher |access-date = 2009-07-28|last = Grady|first = Mary|authorlink = |date=July 2009}}{{cite web|url = http://www.avweb.com/news/airventure/EAAAirVenture2009_Lycoming_Engine_200809-1.html|title = Lycoming: Bringing More Technology To An Airplane Near You |access-date = 2009-07-28|last = Burnside|first = Joseph E. (Jeb)|authorlink = |date=July 2009}}
• Cirrus SR20 - factory installed IO-390-C3B6 {{convert|215|hp|kW|0|abbr=on}} version on the SR20 G6 version{{cite web|url = http://cirrusaircraft.com/G6/|title = Cirrus G6 announcement|access-date = 2017-01-04|date=January 2017|archive-url= https://web.archive.org/web/20170327232514/http://cirrusaircraft.com/G6/|archive-date= 27 March 2017|url-status= dead}}{{cite web|url = https://www.avweb.com/ownership/cirrus-updates-sr22-and-sr20/|title = Cirrus Updates SR22 And SR20|access-date = 6 January 2017|last = Grady|first = Mary|work=AVweb|date = 4 January 2017|archive-url= https://web.archive.org/web/20201007235039/https://www.avweb.com/ownership/cirrus-updates-sr22-and-sr20/|archive-date= 7 October 2020|url-status= live}}
• Mooney M20 E, F & J - available in November 2009 under an STC
• Piper PA-28R Arrow - proposed under STC
• Symphony SA-160 - proposed as a factory installed {{convert|200|hp|kW|0|abbr=on}} version, but aircraft no longer in production{{cite web|url = http://www.avweb.com/eletter/archives/avflash/1176-full.html|title = AVwebFlash Complete Issue: Volume 14, Number 31e|access-date = 2008-08-01|last = AVweb Editorial Staff |authorlink = |date=August 2008}}
• Tecnam P2010{{cite web|url=https://www.tecnam.com/aircraft/p2010/|title=P2010 P Twenty-Ten - Tecnam|website=tecnam.com|access-date=7 April 2019}}

;Military Aircraft

• Lancair Synergy T-90 Colombian Air Force{{cite web|url = http://www.aero-news.net/news/military.cfm?ContentBlockID=cb036b34-2fda-4ea8-b777-6c06c60b775b&Dynamic=1|title = Lancair To Provide Colombian Air Force With Training Aircraft|access-date = 31 July 2010|last = Aero-News Network|authorlink = |date=February 2009}}

{{pistonspecs|

|ref=Lycoming Specialty Datasheet & Type Certificate Data Sheet

|type=4-cylinder fuel-injected horizontally opposed aircraft engine

|bore={{convert|5.319|in|mm|abbr=on}}

|stroke={{convert|4.375|in|mm|abbr=on}}

|displacement={{convert|389|cuin|L|abbr=on}}

|length={{convert|30.70|in|mm|abbr=on}}

|diameter=

|width={{convert|34.25|in|mm|abbr=on}}

|height={{convert|19.35|in|mm|abbr=on}}

|weight={{convert|308|lb|kg|2|abbr=on}} dry

|valvetrain=

|supercharger=

|turbocharger=

|fuelsystem=fuel-injection

|fueltype=100LL avgas

|oilsystem=

|coolingsystem=air-cooled

|power={{convert|210|hp|kW|abbr=on}} at 2700 rpm

|specpower=

|compression=8.9:1

|fuelcon={{convert|11.1|USgal/h|L/h impgal/h|sp=us|abbr=off}} at 65 percent power

|specfuelcon=

|oilcon=

|power/weight={{convert|0.68|hp/lb|kW/kg|abbr=on}}

|designer=

|reduction_gear=

|general_other=

|components_other=

|performance_other=

}}

• Lycoming O-360
• List of aircraft engines

{{reflist|30em}}

• {{Official website|http://www.lycoming.com/Lycoming/PRODUCTS/Engines/Certified/390Series.aspx}}

{{Lycoming aeroengines}}

Category:2000s aircraft piston engines

IO-390

Category:2002 introductions