Engine Options

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Engine Documents

Standard Engine: IO-540 D4A5

Engine Assembly Videos

RV-10 Engine Vendors

RV-10 Used Engine Sources

RV-10 Engine Mandatory Options

  • Ground strap, e.g. from Stein

RV-10 Add-On Options

Electronic Ignition

Electronic Ignition Intro Video: YouTube Video

Electronic Injection

Cold Air Induction

On a stock engine, the incoming air for each cylinder is being run through individual induction tubes routed through the hot oil sitting in the oil pan. This cools the engine oil but also heats up the air. Hot air is less dense than cold air, therefore, a bit of horse power is lost (less oxygen available for the burn). This loss is already accounted for in the nominal 260 hp of a stock IO-540 engine. But also, the stock engine design is counting on the oil being cooled in the oil pan through the incoming air.

A modification of this principle is Cold Air Induction (CAI), designed and sold by Barrett and others. The oil pan is flatter. Underneath the oil pan are the induction tubes which are not passing through oil, thus not being heated. Because the air stays cold, you have more oxygen, thus you can inject more fuel and run the engine harder (more hp, but also more gph).

The total stack of the new oil pan and the new induction tubes is higher than the stock setup, therefore, a different cowl that comes down below the bottom fuselage skin is needed, as well as a different exhaust system has to be purchased (with a different heat exchanger, see this FB thead). Also, the engine mount needs a modification.

Mixture Settings

Ignition Timing

RV-10 Engine Model Count in FAA Database

Date: 12/12/2022
LYCOMING  IO-540-D4A5  	152
LYCOMING  YIO-540 SERIE	77
LYCOMING  IO 540 SER   	74
LYCOMING  IO-540-C4B5  	67
AMA/EXPR  UNKNOWN ENG  	41
LYCOMING  IO-540-EXP   	26
LYCOMING  IO-540 SER   	21
MATTITUCK TMX-540      	21
AEROSPORT IO-540-D4A5  	16
CONT MOTORIO-540 SER   	12
LYCOMING  IO-540-D4B5  	5
LYCOMING  IO-540-E4B5  	5
LYCOMING  XIO-540 SERIE	5
LYCOMING  0-540 SERIES 	4
LYCOMING  IO-540-J4A5  	4
LYCOMING  IO-540-T4B5  	4
LYCOMING  O-540-A1D5   	4
LYCOMING  AEIO-540-D4A5	3
LYCOMING  O-540-E4B5   	3
MATTITUCK TMX IO540D4A5	3
BARRETT   540 SERIES   	2
LYCOMING  IO-540-A1A5  	2
LYCOMING  IO-540-G1A5  	2
LYCOMING  IO-540-N1A5  	2
LYCOMING  O-540-A1C5   	2
AEROSPORT IO-540-EXP   	1
CONT MOTORIO-360-ES    	1
LYCOMING  AEIO-540-D4B5	1
LYCOMING  IO-520 SER   	1
LYCOMING  IO-540-AA1A5 	1
LYCOMING  IO-540-AC1A5 	1
LYCOMING  IO-540-C1B5  	1
LYCOMING  IO-540-C2C   	1
LYCOMING  IO-540-V4A5D 	1
LYCOMING  O-540-A1A5   	1
LYCOMING  O-540-A1B5   	1
LYCOMING  O-540-A2B    	1
LYCOMING  O-540-A4B5   	1
LYCOMING  O-540-A4D5   	1
LYCOMING  O-540-B2B5   	1
LYCOMING  O-540-B4B5   	1
LYCOMING  O-540-E4C5   	1
LYCOMING  O-540-J3C5D  	1
LYCOMING  TIO 540 SER  	1
LYCOMING  TIO-540-AF1B 	1