0540 VS 520 (WHAT WOULD YOU HAVE)

Aircraft powered airboat discussion.
Post Reply
kfutch1515
Southern Airboat Member
Posts: 3
Joined: Mon Jan 23, 2012 6:38 pm

0540 VS 520 (WHAT WOULD YOU HAVE)

Post by kfutch1515 » Mon Jul 13, 2015 6:56 pm

Building a new boat and just wanted some opinions rather to buy a 540 or 520???

User avatar
dblj006
Site Supporter - VI
Site Supporter - VI
Posts: 1690
Joined: Sun Aug 21, 2005 11:08 am
Location: Sarasota Fl.

Re: 0540 VS 520 (WHAT WOULD YOU HAVE)

Post by dblj006 » Mon Jul 13, 2015 8:32 pm

0540
Broke.

User avatar
Tony480
Site Supporter - I
Site Supporter - I
Posts: 5277
Joined: Sun Sep 10, 2006 5:52 pm
Location: lake county

Re: 0540 VS 520 (WHAT WOULD YOU HAVE)

Post by Tony480 » Mon Jul 13, 2015 8:36 pm

540...it will always resale higher than a continental

User avatar
glades cat
Site Supporter - III
Site Supporter - III
Posts: 3036
Joined: Mon Jan 22, 2007 2:36 pm
Location: Miami, Fl

Re: 0540 VS 520 (WHAT WOULD YOU HAVE)

Post by glades cat » Mon Jul 13, 2015 8:39 pm

:happy1:
Which ever one is on sale and in better condition.
"Leave a legacy...Preserve the irreplaceable"
12' x 7' sled built by Scorpion, Cont. O-470-K, 72" Whisper Tip
Rigged by Gladescat & sons in 2009

User avatar
DDSBC
Site Supporter - III
Site Supporter - III
Posts: 953
Joined: Sat Oct 02, 2010 9:28 am
Location: HOLLYWOOD, FL

Re: 0540 VS 520 (WHAT WOULD YOU HAVE)

Post by DDSBC » Mon Jul 13, 2015 8:59 pm

Tony480 wrote:540...it will always resale higher than a continental
Although that generally may be true, Tony forgot to tell you that if you're worried about the resale value of the airboat you're about to build yourself then stop building. :stirpot:
Micah Smith

BCAHCC, KRVSA and lifetime NRA member
12x7 Diamondback w/ rivited on poly, double rear driver double front passenger, full cage, 285 hp IO-520 swingin a 74" Whirl Wind Whisper Tip.

twister69z
Site Supporter - IV
Site Supporter - IV
Posts: 1848
Joined: Tue Feb 23, 2010 6:04 pm
Location: Nebraska

Re: 0540 VS 520 (WHAT WOULD YOU HAVE)

Post by twister69z » Mon Jul 13, 2015 9:12 pm

Hands down 540
If you don't have time to do it right the first time ,
Where are you going to get the time to do it a second time?

jeepinocala1111
Site Supporter - I
Site Supporter - I
Posts: 1150
Joined: Mon Apr 21, 2014 5:57 pm

Re: 0540 VS 520 (WHAT WOULD YOU HAVE)

Post by jeepinocala1111 » Mon Jul 13, 2015 10:00 pm

I like continentals but have you checked on part prices for both? Fuel usage? Reputation? My friend had a lycoming for 15 years rebuilt it once when he bought it never had any problems after that and sold it for a goog price.

User avatar
Bruce
Site Supporter - IV
Site Supporter - IV
Posts: 4793
Joined: Tue Feb 27, 2007 9:43 pm
Location: orange county fl
Contact:

Re: 0540 VS 520 (WHAT WOULD YOU HAVE)

Post by Bruce » Mon Jul 13, 2015 11:04 pm

Im all about a continental they may not resale as high as a lycoming but as far as the aircrafts go they have really tough internals
12 foot Mamba "The Underdog"
Tired Gpu 520,Whirlwind Razor X

User avatar
getitdone
Site Supporter - IV
Site Supporter - IV
Posts: 355
Joined: Thu Jul 17, 2008 4:07 pm
Location: Titusville/Mims

Re: 0540 VS 520 (WHAT WOULD YOU HAVE)

Post by getitdone » Mon Jul 13, 2015 11:43 pm

540
"Poachers Dream"
13'x7'6" Hamant Ultralight With 0540 And 72"Q

todd glover
Southern Airboat Member
Posts: 1956
Joined: Sat May 10, 2008 6:56 pm

Re: 0540 VS 520 (WHAT WOULD YOU HAVE)

Post by todd glover » Tue Jul 14, 2015 7:29 am

Lycoming is like buying a Harley and cont is kinda like a hardly 540 is always worth more

User avatar
trailerdon
Site Supporter - IV
Site Supporter - IV
Posts: 313
Joined: Mon Aug 02, 2010 9:24 pm
Location: Port Charlotte, Fl

Re: 0540 VS 520 (WHAT WOULD YOU HAVE)

Post by trailerdon » Tue Jul 14, 2015 7:43 am

They are both aircraft engines that are made to be reliable, "not fall from the sky". find a good one of either and you will be happy

terrible ted
Southern Airboat Member
Posts: 2826
Joined: Tue Aug 12, 2008 8:07 pm
Location: orlando

Re: 0540 VS 520 (WHAT WOULD YOU HAVE)

Post by terrible ted » Tue Jul 14, 2015 7:49 am

My bud has a 520 I have a 540 his boat is lighter he can run dry better - my boats a barge was a car motor hull. I don't see much difference. All I can say is neither of us have to work on our boats nearly as much as when we had car motors. So I would take ether motor. The rest is just as important.

Olf Art
Site Supporter - VIII
Site Supporter - VIII
Posts: 11851
Joined: Sat Jun 03, 2006 6:33 pm
Location: Plant City, FL

Re: 0540 VS 520 (WHAT WOULD YOU HAVE)

Post by Olf Art » Tue Jul 14, 2015 8:44 am

One important thing to consider in my opinion is, how do you intend to use the boat most of the time?
The camshaft in an 0540 is above the centerline of the crankshaft, so Lycomings are meant to be run mostly 'on the pipe' ..... spun. They don't wear as well when they have to idle a lot because the camshaft and lifters don't sit in an oil bath like the Continentals do, which have their cam and lifters below the crank centerline.

Look at both .... the pushrods on the Lyco's are above the cylinders. On the Conny's they're underneath. If you plan to do a lot of froggin' (for example) go with the Continental. They're as reliable as an anvil, but if you want mostly a cruise boat then I'd probably go for the 0540. JMO
"I know not what tomorrow may bring, but I know Who brings tomorrow."
Member: KRVSA, FAA, TAA, and life member NRA and VFW

RDH0540
Southern Airboat Member
Posts: 203
Joined: Wed May 21, 2008 4:07 pm
Location: Ft Myers and Polk Co. Fl.

Re: 0540 VS 520 (WHAT WOULD YOU HAVE)

Post by RDH0540 » Tue Jul 14, 2015 9:04 am

Lycoming.........Pure Perfection!!!!! Oh yea and a 540 all the way.
Randy Hodges
RDH Airparts & Fabrication LLC.
Fort Myers, Florida
(239) 872-0772
"Pround Member"
KRVSA
Palm Beach hull with air ride pushed by a Lycoming 300!

User avatar
jwoodl01
Site Supporter - I
Site Supporter - I
Posts: 372
Joined: Thu May 29, 2008 1:56 pm
Location: Palm Bay

Re: 0540 VS 520 (WHAT WOULD YOU HAVE)

Post by jwoodl01 » Tue Jul 14, 2015 9:30 am

I'm kinda partial to my 520 and its chop. Truth be told, you can't go wrong with either.

These 520 vs 540 discussions are no different than your typical Ford vs Chevy or Aircraft vs Car Motor conversations. Most all time, it's gonna boil down to personal preference and or funds available.
PROUD MEMBER OF UNITED SPORTSMAN FOR TRADTIONAL HERITAGE

cdid
Southern Airboat Member
Posts: 152
Joined: Tue Jan 07, 2014 12:46 pm
Location: West Palm Beach to Sebring

Re: 0540 VS 520 (WHAT WOULD YOU HAVE)

Post by cdid » Tue Jul 14, 2015 9:55 am

A strong 300 horse 520 has more snap than a 540. I own a 520 wouldnt run a 540 but just my preference both great engines
13' Palm Beach Full Deck (under construction) GITSO 520 72" NGQ

User avatar
TheElevatorGuy
Southern Airboat Member
Posts: 681
Joined: Mon Jul 16, 2012 8:24 pm
Location: Broward County

Re: 0540 VS 520 (WHAT WOULD YOU HAVE)

Post by TheElevatorGuy » Tue Jul 14, 2015 11:13 am

Get one of these.........you won't regret it!!!
Attachments
20140720_113637.jpeg

flcracker9
Site Supporter - III
Site Supporter - III
Posts: 522
Joined: Mon Aug 11, 2014 10:05 pm
Location: Loxahatchee

Re: 0540 VS 520 (WHAT WOULD YOU HAVE)

Post by flcracker9 » Tue Jul 14, 2015 5:22 pm

After selling my 0340 boat, I was in the market for an 0540. Being the impatient consumer I am, I stumbled across my current boat which was a project boat with a IO-0470-L motor, that had never been installed on this boat. After doing much research between the two, I was confident that the Continental was every bit as reliable as the Lycoming, and as stated earlier, the bottom end has it's advantages (though I did battle a low oil pressure issue which I was able to cure for less than $5). I wouldn't hesitate to buy either one, they both have their good points. If money was no object, I'd probably lean towards the 0540. If you want a reliable motor that will hang with the 0540 and leave you some $$$ in your pocket, go with the 0520. My 2 cents
12' Open Palm Beach, IO-0470-L 260hp, 72" NGQ

twister69z
Site Supporter - IV
Site Supporter - IV
Posts: 1848
Joined: Tue Feb 23, 2010 6:04 pm
Location: Nebraska

Re: 0540 VS 520 (WHAT WOULD YOU HAVE)

Post by twister69z » Tue Jul 14, 2015 5:52 pm

I will elaborate on my choice , not that it matters a hill of beans . First Continental cranks are glass hard if it was involved in a prop strike ( as most engines that end up on airboats do) if the flange is bent at all it is cracked.improving the chances the flange and prop are going their separate ways.
Lycoming crankshafts on the other hand a re hard from the slinger back thus allowing machining and straightening of the flange without cracking.
In the early years before CNC machining the aftermarket front starters and alternators were at best a noisy operation from the mis alignment of the pinion to the cobbled adapter to the ring gear. I understand that machining has improved greatly and this has almost completely been remedied.
The intake system of a log style continental is inefficient for clean starts and during cold weather operations seem to be troublesome.Lycoming on the other hand has a central carburetor location and also cools the oil as the fuel travels throughout the sump.
Both seem to deliver their rated horsepower these are just my opinion and only are reflected against Carburated models .
Twister69z
If you don't have time to do it right the first time ,
Where are you going to get the time to do it a second time?

Cool Bean
Site Supporter - I
Site Supporter - I
Posts: 91
Joined: Tue Mar 24, 2009 7:58 pm
Location: Tamarac FL

Re: 0540 VS 520 (WHAT WOULD YOU HAVE)

Post by Cool Bean » Tue Jul 14, 2015 10:34 pm

I have a 520 and love it . I had the misfortune of having to rebuild it and it was not that bad . I rebuilt the top and the bottom end . Will tell you this parts for the 540 are a lot more than for a 520 . But both are good motors . Good luck .

User avatar
jopete
Site Supporter - II
Site Supporter - II
Posts: 972
Joined: Mon Mar 30, 2009 8:07 am
Location: loreauville, la

Re: 0540 VS 520 (WHAT WOULD YOU HAVE)

Post by jopete » Wed Jul 15, 2015 12:49 am

i've had two lycomings, a H model 4 banger and a 540 angle valve. loved the 4 banger. got the 540 running great, but it has left me stranded when i first got it.

i also have a gpu. love it. By far the best bang for the buck i ever spent.

pretty sure my nesxt boat won't have a 540 lycoming, but it might have a 520, clankanentials seem to agree with me more.

of course, I will bypas either one for a ls motor with a reduction. lol

if i ever buy another lycoming, you can bet your house it is comming straight off a airplane or straight out of a major motorbuilders shop, no offense to anybody here, but i will put a knife in the eye of the next man who sells me junk. God help me.

Outlawaircraftengines
Site Supporter - I
Site Supporter - I
Posts: 1019
Joined: Mon Sep 04, 2006 9:49 pm
Location: Plant City
Contact:

Re: 0540 VS 520 (WHAT WOULD YOU HAVE)

Post by Outlawaircraftengines » Wed Jul 15, 2015 12:38 pm

Lycoming 540 is the only way to go.
Gary Barber
Outlaw Aircraft Engines
www.outlawaircraftengines.com
863-698-0383

Ted Martell
Southern Airboat Member
Posts: 33
Joined: Thu Jan 02, 2014 7:27 pm

Re: 0540 VS 520 (WHAT WOULD YOU HAVE)

Post by Ted Martell » Thu Jul 16, 2015 12:03 am

I have had both in planes I owned and flew in the past and had less trouble and cheaper maintance on the 520 I have a fuel injected 520 on my boat now and there's not many places it won't go I won't be trading it for a 540 any time soon and you dam sure will never see me on a car motor boat

User avatar
speed wheelie
Site Supporter - V
Site Supporter - V
Posts: 1266
Joined: Fri Mar 02, 2007 9:34 pm
Location: Winter Haven Fl

Re: 0540 VS 520 (WHAT WOULD YOU HAVE)

Post by speed wheelie » Thu Jul 16, 2015 2:22 pm

Me myself I would rather have a continental
Attachments
11704935_1072388092773128_1339444879061266897_n.jpg
You got to be yourself
863-956-3030 shop and cell

Post Reply

Return to “Aircraft Power Only”