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Lycoming IO-540 C4B5

 
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jdalton77(at)comcast.net
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PostPosted: Sun Feb 25, 2007 11:10 am    Post subject: Lycoming IO-540 C4B5 Reply with quote

Anyone using this engine? Lycoming IO-540 C4B5?

I don't know a lot about engines but this is 250HP and is from an Aztec. What do you guys think?

Jeff
Just received slo-build Wing Kit
#40544
[quote][b]


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jim(at)CombsFive.Com
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PostPosted: Sun Feb 25, 2007 11:38 am    Post subject: Lycoming IO-540 C4B5 Reply with quote

Jeff,

I have one of two that came off an Aztec. It's essentially the same as the D4B5. So far I have not had any issues with the installation. Not flying yet though.

I also get a Hartzel prop and they had an STC for the prop on this particular engine with no AD's or RPM limitations.

Both engines off this particular Aztec went to RV-10 builders.

I pulled the hydraulic pump and the vacuum pump off my engine. I plan on keeping the 70 amp alt too.

Jim C
N312F / 40192

Do No Archive

============================================================
From: "jdalton77" <jdalton77(at)comcast.net>
Date: 2007/02/25 Sun PM 02:08:28 EST
To: <rv10-list(at)matronics.com>
Subject: Lycoming IO-540 C4B5

Anyone using this engine? Lycoming IO-540 C4B5?

I don't know a lot about engines but this is 250HP and is from an Aztec. What do you guys think?

Jeff
Just received slo-build Wing Kit
#40544
============================================================


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dmaib@me.com



Joined: 25 Apr 2006
Posts: 455
Location: New Smyrna Beach, Florida

PostPosted: Sun Feb 25, 2007 2:33 pm    Post subject: Lycoming IO-540 C4B5 Reply with quote

Hi Jeff,
I too have a C4B5 off an Aztec. I got it at Wentworth in Minneapolis. Where are you located? I believe, but don't know yet for sure, that this engine can be overhauled to D4A5. The gentleman that is overhauling mine is researching that for me.

David Maib
#40559 QB
Wings

On Feb 25, 2007, at 1:08 PM, jdalton77 wrote:
Anyone using this engine?  Lycoming IO-540 C4B5?
 
I don't know a lot about engines but this is 250HP and is from an Aztec.  What do you guys think?
 
Jeff
Just received slo-build Wing Kit
#40544
Quote:
         - The RV10-List Email Forum - class="Apple-converted-space"> --> http://www.matronics.com/Navigator?RV10-List              - NEW MATRONICS WEB FORUMS - class="Apple-converted-space">   --> http://forums.matronics.com

[quote][b]


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_________________
David Maib
RV-10 #40559
New Smyrna Beach, FL
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rene(at)felker.com
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PostPosted: Sun Feb 25, 2007 3:49 pm    Post subject: Lycoming IO-540 C4B5 Reply with quote

Jim C, you wouldn't happen to have that vacuum pump pad sitting around
unused? I am looking for one and would be willing to pay a reasonable price
for it.

Anyone else have one? I have a C4B5 and plan on using a standby alternator.

Rene'
N423CF
40322
Finish or something like that.....
801-721-6080
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jim(at)CombsFive.Com
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PostPosted: Sun Feb 25, 2007 4:49 pm    Post subject: Lycoming IO-540 C4B5 Reply with quote

Yep, Send me a note to my email

I may mount an 2nd alternator as well. I need to hang on to mine for the moment.

Jim C

Do Not Archive

============================================================
From: "Rene" <rene(at)felker.com>
Date: 2007/02/25 Sun PM 06:49:11 EST
To: <rv10-list(at)matronics.com>
Subject: RE: Lycoming IO-540 C4B5



Jim C, you wouldn't happen to have that vacuum pump pad sitting around
unused? I am looking for one and would be willing to pay a reasonable price
for it.

Anyone else have one? I have a C4B5 and plan on using a standby alternator.

Rene'
N423CF
40322
Finish or something like that.....
801-721-6080
--


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jim(at)CombsFive.Com
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PostPosted: Sun Feb 25, 2007 5:05 pm    Post subject: Lycoming IO-540 C4B5 Reply with quote

Rene,

Guess I should have more clear. Yes I still do have the pad, But for the moment I need to hang on to it.

Jim C

Do Not Archive

============================================================
From: <jim(at)CombsFive.Com>
Date: 2007/02/25 Sun PM 07:49:16 EST
To: <rv10-list(at)matronics.com>
Subject: Re: RE: Lycoming IO-540 C4B5



Yep, Send me a note to my email

I may mount an 2nd alternator as well. I need to hang on to mine for the moment.

Jim C

Do Not Archive

============================================================
From: "Rene" <rene(at)felker.com>
Date: 2007/02/25 Sun PM 06:49:11 EST
To: <rv10-list(at)matronics.com>
Subject: RE: Lycoming IO-540 C4B5



Jim C, you wouldn't happen to have that vacuum pump pad sitting around
unused? I am looking for one and would be willing to pay a reasonable price
for it.

Anyone else have one? I have a C4B5 and plan on using a standby alternator.

Rene'
N423CF
40322
Finish or something like that.....
801-721-6080
--


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Tim_Lewis(at)msm.umr.edu
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PostPosted: Sun Feb 25, 2007 7:36 pm    Post subject: Lycoming IO-540 C4B5 Reply with quote

That's what I bought, and overhauled it with the help of an friend who is an IA. If you look through the Lycoming parts manual, you'll see that the C4B5 is part-for-part identical to the D4A5, except for some different choices regarding selection of oil filler neck (as I recall). The Lycoming tech reps at Oshkosh verified this, and said that the C4B5 can be run just like the D4A5 (2700 RPM, 260 HP) with no ill effects.

Tim
Quote:
--
Tim Lewis -- HEF (Manassas, VA)
RV-6A N47TD -- 850 hrs
RV-10 #40059 under construction


jdalton77 wrote: [quote] Anyone using this engine? Lycoming IO-540 C4B5?

I don't know a lot about engines but this is 250HP and is from an Aztec. What do you guys think?

Jeff
Just received slo-build Wing Kit
#40544
Quote:

[b]


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SGP93GSX



Joined: 03 Dec 2006
Posts: 1
Location: West Palm Beach

PostPosted: Sun Feb 25, 2007 8:10 pm    Post subject: Lycoming IO-540 C4B5 Reply with quote

This engine has been sitting for 7 years. The Aztec just sold on ebay for 16,000 and this guy is now parting out on Barnstormers. Be Careful
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VHMUM(at)bigpond.com
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PostPosted: Sun Feb 25, 2007 9:12 pm    Post subject: Lycoming IO-540 C4B5 Reply with quote

You can also use a N1A5 as the only diference is a heavy duty crank.
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dav1111(at)cox.net
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PostPosted: Mon Feb 26, 2007 3:31 am    Post subject: Lycoming IO-540 C4B5 Reply with quote

I agree with Tim. My C4B5 is flying high on N710RV (first flight 7/28/06). It is a great core to use for overhaul for the RV-10.

Russ Daves

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jesse(at)saintaviation.co
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PostPosted: Mon Feb 26, 2007 12:48 pm    Post subject: Lycoming IO-540 C4B5 Reply with quote

N256H has over 300 hours on a C4B5 off an Aztec. It was overhauled with new Titan cylinders. Two things to watch out for, one very minor. First, and the bigger issue, you will probably need new engine mount ears. The one we got has the big hole ears and the -10 needs the small hole. I know there is a technical Dynafocal 1, Dynafocal 2 and some other name for the different mount formats, but I don’t know which is which. If it has the big holes, you will need to buy a set with small holes. I actually may have a set around here, but I would have to look for it. Second, the work of getting the baffles fit around the case is a fair bit more on the C4B5 (in my experience) than the D4A5. There are some slight differences in the case (at least on the one we got) that make it more work to get fit, while the D4A5 fits the baffles absolutely beautifully as they come from Van’s. Again, the 2nd one is a minor issue, just requiring a little more time.

It is also my understanding that the internal parts are identical, so running it as a 260HP 2700RPM engine instead of a 250HP 2575RPM engine is supposedly fine, and since you are putting it on an experimental airplane, you could probably put that in your operating manual somewhere and be fine, but that is a decision you have to make, of course.

Jesse Saint
Saint Aviation, Inc.
jesse(at)saintaviation.com (jesse(at)saintaviation.com)
www.saintaviation.com
Cell: 352-427-0285
Fax: 815-377-3694


From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of jdalton77
Sent: Sunday, February 25, 2007 2:08 PM
To: rv10-list(at)matronics.com
Subject: Lycoming IO-540 C4B5


Anyone using this engine? Lycoming IO-540 C4B5?



I don't know a lot about engines but this is 250HP and is from an Aztec. What do you guys think?



Jeff

Just received slo-build Wing Kit

#40544
[quote] [b]


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mike(at)cleavelandtool.co
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PostPosted: Mon Feb 26, 2007 2:35 pm    Post subject: Lycoming IO-540 C4B5 Reply with quote

Does anyone have a measurement for "big ear" and "small ear"?

Thanks,
Mike

On 2/26/07, Jesse Saint < jesse(at)saintaviation.com (jesse(at)saintaviation.com)> wrote:[quote]
First, and the bigger issue, you will probably need new engine mount ears. The one we got has the big hole ears and the -10 needs the small hole. I know there is a technical Dynafocal 1, Dynafocal 2 and some other name for the different mount formats, but I don't know which is which. If it has the big holes, you will need to buy a set with small holes. I actually may have a set around here, but I would have to look for it.
[b]


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AV8ORJWC



Joined: 13 Jul 2006
Posts: 1149
Location: Aurora, Oregon "Home of VANS"

PostPosted: Mon Feb 26, 2007 3:31 pm    Post subject: Lycoming IO-540 C4B5 Reply with quote

The mounts were changed to reflect the design improvement of the IO-720 (the Big Eight) mount on DWG #63168 dated on 3/15/1966 as Change M.

There is a 31 degree angle at the center of the bolt in relation to the base of the mount at the bolt pattern. The ID of the mount for receiving the rubber dampener is 1.390/1.380”. Forward to Aft from the face of each washer the measurement is 2.110”. The Ear should be 0.630/0620” thick. Bonded Sandwich Assembly is Lord Part # J-9604-20 which is NOT FURNISHED with engine. Maximum movement to snubbing is 0.27”

There is also a Lord Part #J-9613-12 and J-9613-15 which is with an ID of 2.015/2.005” and Forward to Aft from face of each washer as 2.760”. These have a 20 degree angle to the base. Subject to change based on bushing used. The ear should be 0.625” thick. Ask your engine rebuilder. Maximum movement to snubbing is 0.46” and this characteristic can create the sag at the prop hub which has been discussed before.

Both mounts use 0.438” Close Tolerance Bolts.

John




From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Mike Lauritsen - Work
Sent: Monday, February 26, 2007 2:34 PM
To: rv10-list(at)matronics.com
Subject: Re: Lycoming IO-540 C4B5


Does anyone have a measurement for "big ear" and "small ear"?

Thanks,
Mike
On 2/26/07, Jesse Saint < jesse(at)saintaviation.com (jesse(at)saintaviation.com)> wrote:
First, and the bigger issue, you will probably need new engine mount ears. The one we got has the big hole ears and the -10 needs the small hole. I know there is a technical Dynafocal 1, Dynafocal 2 and some other name for the different mount formats, but I don't know which is which. If it has the big holes, you will need to buy a set with small holes. I actually may have a set around here, but I would have to look for it.


[quote] [b]


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jim(at)CombsFive.Com
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PostPosted: Mon Feb 26, 2007 4:30 pm    Post subject: Lycoming IO-540 C4B5 Reply with quote

Here are the two pages referring to the ears from the Lycoming PC-615 parts catalog.

The D4A5 uses parts 70456 (Small Holes / Vans RV-10 Mount)

The C4B5 uses parts 72306 (Large Holes)

Jim C


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1-3x.pdf
 Description:

Download
 Filename:  1-3x.pdf
 Filesize:  380.13 KB
 Downloaded:  643 Time(s)


1-4x.pdf
 Description:

Download
 Filename:  1-4x.pdf
 Filesize:  131.75 KB
 Downloaded:  455 Time(s)

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jesse(at)saintaviation.co
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PostPosted: Mon Feb 26, 2007 5:13 pm    Post subject: Lycoming IO-540 C4B5 Reply with quote

Big holes are roughly 2”. That might have been in JC’s message, but I couldn’t find it in English there J, so I measured the big holes on my shelf. I will see if I can find the small hole ears around here. They cost $400, so that’s what I would want for them.

Do not archive.

Jesse Saint
Saint Aviation, Inc.
jesse(at)saintaviation.com (jesse(at)saintaviation.com)
www.saintaviation.com
Cell: 352-427-0285
Fax: 815-377-3694


From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Mike Lauritsen - Work
Sent: Monday, February 26, 2007 5:34 PM
To: rv10-list(at)matronics.com
Subject: Re: Lycoming IO-540 C4B5


Does anyone have a measurement for "big ear" and "small ear"?

Thanks,
Mike
On 2/26/07, Jesse Saint < jesse(at)saintaviation.com (jesse(at)saintaviation.com)> wrote:
First, and the bigger issue, you will probably need new engine mount ears. The one we got has the big hole ears and the -10 needs the small hole. I know there is a technical Dynafocal 1, Dynafocal 2 and some other name for the different mount formats, but I don't know which is which. If it has the big holes, you will need to buy a set with small holes. I actually may have a set around here, but I would have to look for it.


[quote] [b]


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dav1111(at)cox.net
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PostPosted: Tue Feb 27, 2007 5:22 am    Post subject: Lycoming IO-540 C4B5 Reply with quote

The RV-10 uses Engine Mount Ears #70456.

Russ Daves
N710RV - First Flight 7/28/06
[quote][b]


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dav1111(at)cox.net
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PostPosted: Tue Feb 27, 2007 5:27 am    Post subject: Lycoming IO-540 C4B5 Reply with quote

You cannot go by the Lycoming Parts Catalog regarding which engine uses which ears. You have to use the small ears #70456 on either the C4B5, or D4A5 or any other variant of the IO-540 when it is mounted on the Van's engine mount. It is not the engine that controls the ears needed but the engine mount.

Russ Daves
N710RV - First Flight 7/28/06
[quote][b]


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