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12-04-2013, 12:22 PM
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Join Date: Dec 2013
Location: South Texas
Posts: 8
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IO-540
Howdy, I've got a few questions vis-a-vis engines for a -10.
Van's recommends either a 235hp or 260hp version of the IO-540
I have heard the 235hp version uses low compression pistons and is thus more friendly to automotive gas. True?
With its designation "IO" does that mean it's fuel injected only? Is there a carburetor version of this available? Pros/cons
Does the injected version require battery to run or is there a magneto set-up for that?
Is the model number for the 235hp version IO-540-B4B5?
Sorry for the newbie questions. My familiarity with engines is 1960s Ford Mustangs (and my Hyundai). I'm looking for a set-up that will be fairly easy to maintain myself without the need for a computer or too much special equipment. I like getting my hands dirty and using my mechanical mind to make stuff purr.
Thanks in advance!
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12-04-2013, 12:39 PM
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Senior Curmudgeon
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Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 15,408
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The leading I in the engine designation is what signifies it is injected. A carbed engine would be a O540. The O means opposed bty.
The engine will run without a battery after starting, unless it has an electronic ignition system. The battery is for the starter, and the boost pump.
__________________
Mike Starkey
VAF 909
Rv-10, N210LM.
Flying as of 12/4/2010 
Phase 1 done, 2/4/2011
Sold after 240+ wonderful hours of flight.
"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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12-04-2013, 12:58 PM
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Join Date: Dec 2013
Location: South Texas
Posts: 8
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Injection + Magnetos?
Quote:
Originally Posted by Mike S
The engine will run without a battery after starting, unless it has an electronic ignition system. The battery is for the starter, and the boost pump.
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So even the Fuel Injected versions have magnetos?
Sorry for the dumb questions, I'm just getting my pitch together to sell my wife on the idea of building an RV-10  |
12-04-2013, 01:20 PM
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Join Date: Jul 2009
Location: Mojave
Posts: 4,642
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Yes, the fuel injection is completely mechanical and not tied in any way to the ignition system (unlike your Hyundai).
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WARNING! Incorrect design and/or fabrication of aircraft and/or components may result in injury or death. Information presented in this post is based on my own experience - Reader has sole responsibility for determining accuracy or suitability for use.
Michael Robinson
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Harmon Rocket II -SDS EFI
RV-8 - SDS CPI
1940 Taylorcraft BL-65
1984 L39C
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12-04-2013, 01:20 PM
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Join Date: Aug 2005
Location: Atlanta, GA
Posts: 4,208
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Quote:
Originally Posted by N-336TX
Howdy, I've got a few questions vis-a-vis engines for a -10.
Van's recommends either a 235hp or 260hp version of the IO-540
I have heard the 235hp version uses low compression pistons and is thus more friendly to automotive gas. True?
Yes
With its designation "IO" does that mean it's fuel injected only? Is there a carburetor version of this available? Pros/cons
Both carbureted and injected are available.
Does the injected version require battery to run or is there a magneto set-up for that?
No battery required for either engine to run unless running an electronic ignition.
Is the model number for the 235hp version IO-540-B4B5?
The TCDS (see link http://www.tvbf.org/docs/lycoming-o-540.pdf) shows 8 model numbers with 235 hp, including the O-540-B4B5
Sorry for the newbie questions. My familiarity with engines is 1960s Ford Mustangs (and my Hyundai). I'm looking for a set-up that will be fairly easy to maintain myself without the need for a computer or too much special equipment. I like getting my hands dirty and using my mechanical mind to make stuff purr.
Thanks in advance! |
Good luck with your quest.
__________________
Kyle Boatright
Marietta, GA
2001 RV-6 N46KB
2019(?) RV-10
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12-04-2013, 01:21 PM
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Senior Curmudgeon
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Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 15,408
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Quote:
Originally Posted by N-336TX
So even the Fuel Injected versions have magnetos?
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Magnetos are the standard setup, but there are alternatives available.
Some alternatives are magneto based, like G3 ignitions offers, or the Slick Lasar system, and there are the full electronic units like EFII and Lightspeed etc.
The basic way the engine will come from Lycoming is with mags, unless specified differently.
__________________
Mike Starkey
VAF 909
Rv-10, N210LM.
Flying as of 12/4/2010
Phase 1 done, 2/4/2011
Sold after 240+ wonderful hours of flight.
"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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12-04-2013, 02:06 PM
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Join Date: May 2008
Location: Brisbane Qld. Aust.
Posts: 2,271
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If you are building a -10, and investing in an expensive machine, there is a simple answer.
IO540D4A5 260HP.
Like most things Vans recommend, it is for a good reason.
Save the agonising decisions for things like paint scheme, interior colours and trim, avionics, your rego number.
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______________________________
David Brown
DYNON Authorised Dealer and Installer
The two best investments you can make, by any financial test, an EMS and APS!
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12-04-2013, 02:09 PM
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Join Date: Dec 2013
Location: South Texas
Posts: 8
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Engine
Vans also recommends the 235hp version. At double the cost, I think I'd like to run Automotive Gas. (sanz ethanol)
Not to mention, it looks like 100LL will be going away some time if the EPA has its way.
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12-04-2013, 02:15 PM
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Join Date: Jun 2006
Location: Delaware, OH (KDLZ)
Posts: 4,194
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Quote:
Originally Posted by N-336TX
Vans also recommends the 235hp version. At double the cost, I think I'd like to run Automotive Gas. (sanz ethanol)
Not to mention, it looks like 100LL will be going away some time if the EPA has its way.
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I don't believe that is their current thought. To my knowledge, there is only one of them flying. |
12-04-2013, 04:13 PM
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Join Date: Jan 2010
Location: Southern Michigan
Posts: 1,964
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Quote:
Originally Posted by N-336TX
Vans also recommends the 235hp version. At double the cost, I think I'd like to run Automotive Gas. (sanz ethanol)
Not to mention, it looks like 100LL will be going away some time if the EPA has its way.
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My engine is the IO-540 V4A5, 260 hp with low compression pistons. At the Lycoming tear down seminar held at Oshkosh a few years ago, I point blank asked the Lycoming representative if I could run mogas in it and he stated absolutely yes,,,and it would be very happy doing so.
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David C.
Howell, MI
RV-10: #41686 Under Construction
RV-9A: #90949 Under Construction
RV-10: #40637 Completed/Sold 2016
Cozy MKIV:#656 Completed/Sold 2007
"Donor Exempt" but donated through Dec. 2020
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