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  #1  
Old 01-07-2020, 08:23 AM
FlyingBanker's Avatar
FlyingBanker FlyingBanker is offline
 
Join Date: Sep 2018
Location: Eatonton, GA
Posts: 110
Default Lycoming Engine TBO

I bought my 2001 RV-6A a year ago with 930hrs on the airframe and engine. I did that with the understanding that the TBO for the O-360-A1A engine was 2,000 hrs. This week, I was prompted by an ad I saw to go look at the Lycoming site and specifically at the Service Instructions for TBO. I was surprised to find that there is also a 12-year recommendation regardless of time. At least, that's how I am reading it. Is this accurate? If so, my plane already has 18+ years of service. Last condition inspection was done by Vic Syracuse and all compressions were good, no metal found in oil or filter. Last oil analysis was good. Is this something I need to address in the near future as opposed to what I thought was still several years off?
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  #2  
Old 01-07-2020, 09:18 AM
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Bob Martin Bob Martin is offline
 
Join Date: Jan 2005
Location: Charlottesville, Virginia
Posts: 1,183
Default

Yes and no...
Mine is 25 yrs and 1300TT.......running well.
Just be aware of the facts and maintain accordingly.
I pretty much think the 12 yr recommendation is for soft parts getting hard.
So change them when you get a chance...
example: oil drain back tubes from valve covers
intake tube connectors and clamps
intake tube gaskets at the head.
valve cover gaskets
nose seals, if they start leaking.
Mags and ignition wires as they wearout.
Fuel lines every 5 yrs unless they are the permenant ones.
You get the picture....
ohh and fly as often as you can....the engines love to run.
The above is my opinion, others can chime in too.
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RV-6, 0-360 Hartzell C/S, Tip up, 1200+TT
James extended cowl/plenum, induction, -8VS and Rudder. TSFlightline hoses. Oregon Aero leather seats.
D100-KMD150-660-TT ADI2- AS air/oil seperator. Vetterman exhaust with turndown tips.
Louisa, Virginia KLKU N94TB
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  #3  
Old 01-07-2020, 10:32 AM
rocketman1988 rocketman1988 is offline
 
Join Date: Jun 2010
Location: Sunman, IN
Posts: 1,966
Default Also...

Also, realize that TBO time is a recommendation and not a limitation...
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  #4  
Old 01-07-2020, 11:09 AM
Jpm757 Jpm757 is offline
 
Join Date: May 2013
Location: Sherman, CT
Posts: 550
Default

The other side of the coin is that Lycoming has approved TBO extensions of 200 hrs. on many engines provided they are operated 40 hrs/ mo. or more. Bottom line as we all know, these engines need to be flown, and frequently. The 12 year recommended overhaul period is a CYA for Lycoming. I would not be concerned with your engine if it has been flown on a regular basis. Any extended period of inactivity may be a cause for concern. As Bob mentioned, it is important to replace hoses, seals, and gaskets as necessary. An oil analysis program can also provide a heads up to any potential problem. Exercise prudent maintenance practices and enjoy your RV!
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RV6 #20477 completed 1991 sold.
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  #5  
Old 01-07-2020, 12:41 PM
BlndRvtr BlndRvtr is offline
 
Join Date: Mar 2009
Location: NE Where
Posts: 267
Default

Quote:
Originally Posted by Jpm757 View Post
The 12 year recommended overhaul period is a CYA for Lycoming.
Written by lawyers for lawyers. Of no concern with proper preventative maintenance.

George
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  #6  
Old 01-07-2020, 06:30 PM
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grubbat grubbat is offline
 
Join Date: May 2012
Location: Ga
Posts: 636
Default time......

Iíve got 3000hr SMOH on a pair of Lycoming IO540ís with 20,000hr total time. Good oil pressure, compression, and good oil analysis. The risk is that there will be less reusable parts at overhaul. However, I may be 80yrs old then and it will be somebodyís elseís monkey.....


Quote:
Originally Posted by FlyingBanker View Post
I bought my 2001 RV-6A a year ago with 930hrs on the airframe and engine. I did that with the understanding that the TBO for the O-360-A1A engine was 2,000 hrs. This week, I was prompted by an ad I saw to go look at the Lycoming site and specifically at the Service Instructions for TBO. I was surprised to find that there is also a 12-year recommendation regardless of time. At least, that's how I am reading it. Is this accurate? If so, my plane already has 18+ years of service. Last condition inspection was done by Vic Syracuse and all compressions were good, no metal found in oil or filter. Last oil analysis was good. Is this something I need to address in the near future as opposed to what I thought was still several years off?
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RV-3 Sold
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  #7  
Old 01-07-2020, 07:29 PM
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Vlad Vlad is offline
 
Join Date: Oct 2008
Location: Utah
Posts: 7,938
Default Keep flying

The more you fly Jim the less time you waste digging. The best rust prevention program is a daily exercise
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  #8  
Old 01-07-2020, 08:24 PM
calpilot calpilot is offline
 
Join Date: Aug 2018
Location: Independence
Posts: 16
Default TBO

TBO is mandatory for commercial operators. EAB is on condition. Hoses are at life expectancy at 12 years, Accessories usually are also getting tired at that age. Soooo, if you have a high calendar engine, perhaps invest $20 for oil analysis, do a " wiggle" test on guides, and be sure to inspect suction screen. I ran a Lycoming 0-360 to 3700 hours, looked great inside, but ran regularly and in a dry environment.
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  #9  
Old 01-07-2020, 08:32 PM
cajunwings cajunwings is offline
 
Join Date: Jun 2007
Location: new iberia la
Posts: 677
Default TBO

Good advice posted. Change all the rubber parts and check the valve guides. Every few years I like to get into the forward end of the crank to clean out the sludge and check for corrosion.

Don Broussard A&P-IA
RV9 Rebuild in Progress
57 Pacer
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  #10  
Old 01-13-2020, 09:24 PM
NewbRVator NewbRVator is offline
 
Join Date: Jul 2018
Location: CA
Posts: 165
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Quote:
Originally Posted by cajunwings View Post
Good advice posted. Change all the rubber parts and check the valve guides. Every few years I like to get into the forward end of the crank to clean out the sludge and check for corrosion.

Don Broussard A&P-IA
RV9 Rebuild in Progress
57 Pacer
Hi Don can you elaborate on the forward end of the crank inspection?

I just replaced accessories, hoses, gaskets, etc and the 0-360 A1A I run is humming with good compressions. Good compressions, borescope, valves look good, guides etc.

But I'd like to keep going and going.....Thanks!!!!
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