Like BITOG?

If you don't mind oil-related ads, and want to keep us running, whitelist BobisTheOilGuy in your ad blocker.

Thank you!

Recent Topics
Diesel lube in Petrol Engine
by Ducked
06/20/18 07:46 PM
New key programming cost
by 92saturnsl2
06/20/18 07:27 PM
When you help someone and its time to walk away
by RazorsEdge
06/20/18 07:09 PM
Sightly overfilled oil..ok or drain?
by flinter
06/20/18 07:08 PM
Wheel says 50 mph max
by pda1122
06/20/18 06:54 PM
15w40 Maxlife in Motorcycle
by Brian553
06/20/18 06:39 PM
BITOGer in Ottawa/Orleans Canada area ? ...
by Papa Bear
06/20/18 06:36 PM
Old Engine SOUND
by MasterSolenoid
06/20/18 06:06 PM
ProMotive PH 2500 CUT OPEN
by car51
06/20/18 04:54 PM
go green or Dexcool?
by umungus1122
06/20/18 04:50 PM
Latest info on ExxonMobil synthetic base stocks
by Gokhan
06/20/18 04:49 PM
Pennzoil Platinum 5w30 - $3.21/qt Amazon
by SnowmanCO
06/20/18 04:37 PM
What Is Dexos Oil?
by mx5miata
06/20/18 04:27 PM
Hail damage means newer vehicle time!
by ZZman
06/20/18 03:39 PM
Trouble with Grease Gun
by tc1446
06/20/18 02:30 PM
Toyota brand conventional (TGMO)
by Jaha24k
06/20/18 01:45 PM
Any synthetic oil rebates currently or soon?
by 07Piloteer
06/20/18 01:32 PM
2018 Hyundai elantra motor oil
by kapama
06/20/18 01:00 PM
SN Plus on shelves
by 03s
06/20/18 12:23 PM
Group 90 Battery - 45 vs 60aH rating
by The Critic
06/20/18 12:19 PM
Newest Members
Ilia, nmac9, Theraven, battleman13, Shassis
65278 Registered Users
Who's Online
108 registered (2009Edge, 01rangerxl, 10WSmuckers, 2002 Maxima SE, 2K2AcuraTL, 379KITTY, 12 invisible), 1233 Guests and 58 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
65278 Members
67 Forums
285670 Topics
4767502 Posts

Max Online: 3590 @ 01/24/17 08:07 PM
Donate to BITOG
Page 1 of 2 1 2 >
Topic Options
#4678473 - 02/26/18 08:29 AM Aircraft UOA fact
Cujet Offline


Registered: 02/15/03
Posts: 7150
Loc: Jupiter, Florida
UOA is a nice way to watch engine trends. However, it's unable to pick up large particulates, such as the typical Lycoming failure. I recently received the following:

"As an aside, I religiously sent samples to Blackstone during my last
engine run...all 1600+ hours...and all came back glowingly perfect. Even
the last one...as I was cleaning metal out of my filter"

This particular owner experienced camshaft failure, very similar to my cam failure. It's common on Lycoming IO360 engines and it DOES NOT show up in UOA results.

A picture of my camshaft failure can be found here: http://cujet.com/html/engine.html




Edited by Cujet (02/26/18 08:31 AM)
_________________________

Top
#4678479 - 02/26/18 08:36 AM Re: Aircraft UOA fact [Re: Cujet]
2015_PSD Offline


Registered: 09/26/10
Posts: 7234
Loc: SE Texas
There have been other cases like this too which are posted from time to time (from car/truck engines). UOA is for oil health, not engine health, but **sometimes** they can show an impending problem.

Nice photos of the engine build!
_________________________
2018 MB AMG GLC43 3.0L Coupe - M1 0W-40/OEM
2018 MB C300 2.0L - M1 0W-40/OEM
2015 F-250 6.7L PS Diesel - Delo 5W-40/CQ Blue
2014 Explorer 3.5L Limited - M1 AFE 0W-20/FU

Top
#4678519 - 02/26/18 09:20 AM Re: Aircraft UOA fact [Re: 2015_PSD]
CT8 Offline


Registered: 10/09/14
Posts: 10963
Loc: Idaho
Originally Posted By: 2015_PSD
There have been other cases like this too which are posted from time to time (from car/truck engines). UOA is for oil health, not engine health, but **sometimes** they can show an impending problem.

Nice photos of the engine build!
This and Thanks Cujet !!
_________________________
"Don't let your preconceived notions get in the way of facts."
Geoff Metcalf

Top
#4678541 - 02/26/18 09:40 AM Re: Aircraft UOA fact [Re: Cujet]
CT8 Offline


Registered: 10/09/14
Posts: 10963
Loc: Idaho
Cujet do you rebuild the engine after the parts failure?
_________________________
"Don't let your preconceived notions get in the way of facts."
Geoff Metcalf

Top
#4678555 - 02/26/18 10:04 AM Re: Aircraft UOA fact [Re: Cujet]
supton Offline


Registered: 11/09/08
Posts: 11948
Loc: NH
Thanks for the pics--always curious what these motors look like. Nice buildup too.
_________________________
2011 Toyota Camry, base, 2.5L/6MT, 162k, hers
2010 Toyota Tundra DC, 4.6L/6AT, 143k, ours
1999 Toyota Camry LE, 2.2L/4AT, 183k, his

Top
#4678581 - 02/26/18 10:28 AM Re: Aircraft UOA fact [Re: Cujet]
andyd Online   content


Registered: 09/25/04
Posts: 7143
Loc: Marshfield , MA
Beautiful work. A complete small plane ignoramus here. Doesn't an aircraft have to be re-certified every X amount of hours?
_________________________
'16 Camry LE STP synth 0w20 and STP filter. the Fridge

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline HM 0w20 and OEM filter
Thick oil is better grin2

Top
#4678595 - 02/26/18 10:43 AM Re: Aircraft UOA fact [Re: Cujet]
stockrex Offline


Registered: 01/08/06
Posts: 2434
Loc: Michigan
Cujet, did that cam wear or shear off?
_________________________
07Ridgeline:33k,08Dmax:14k,10Fit:40k:90Toyota1Ton:88k
Oil Whisperer!*Fear the DINO*

Top
#4678603 - 02/26/18 10:48 AM Re: Aircraft UOA fact [Re: Cujet]
Virtus_Probi Offline


Registered: 06/25/15
Posts: 3970
Loc: New England
Ummm...wouldn't this tend to be a fatal failure? I guess the engine was able to limp along?

I used to chip in with a couple private pilots at my first job in TX who would rent a small plane in Dallas and fly up to a really cool catfish restaurant on the Red River in OK that had a dirt landing strip. The first time I joined them, they were meticulously inspecting the aircraft before departure and the guy checking the oil looked really puzzled. Finally, he told the other pilot that it was 8 quarts low and headed off the get some oil.
I thought really hard about bolting for my car because that sounded really bad to me, but I put my big boy pants on and stuck it out. It was really a wonderful trip and I joined them whenever I could from then on.
_________________________
2014 Forester XT, 80500 miles
Last Change;
Valvoline Full Synthetic 5W30 d1G2
Tokyo Roki 15208AA170 filter

Top
#4678612 - 02/26/18 11:00 AM Re: Aircraft UOA fact [Re: Cujet]
Kestas Offline



Registered: 06/04/02
Posts: 12327
Loc: The Motor City
Was there a magnetic chip detector in the engine to alert you?

Top
#4678624 - 02/26/18 11:13 AM Re: Aircraft UOA fact [Re: Cujet]
BrocLuno Offline


Registered: 09/06/15
Posts: 5514
Loc: Kalifornia Kollective
Cardinal is a very nice plane smile

The cam failure could be from one of two sources. Either the lobe was soft, or one of the lifters bound up and stopped spinning ... Once that happens it wipes the taper off the lobe in a heart beat and all is down hill from there.

I noticed you had some lifter bore work done. Very wise. The bores need to be a slightly "loose" to make sure if some small debris gets in there, they can still spin.

Really nice engine work. And the interior looks very good too. You do nice meticulous work. Think I'll buy a plane and send it down for you to tinker on laugh
_________________________
Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.

Top
#4678708 - 02/26/18 01:01 PM Re: Aircraft UOA fact [Re: Cujet]
Yah-Tah-Hey Offline


Registered: 05/26/14
Posts: 3398
Loc: Columbus,Nebraska
Very nice presentation Cujet. I liked the P portion of the A&P curriculum at Spartan. That was a long time ago. Never put a wrench on a "real" airplane but was successful in power generation.

Top
#4678852 - 02/26/18 03:18 PM Re: Aircraft UOA fact [Re: Cujet]
Trav Offline


Registered: 11/20/06
Posts: 18872
Loc: MA, Mittelfranken.de
Interesting cam lobe mod for oiling. I notice some high revving bike engines use squirters above the cams lobes, which works well also.
There was a guy on the board with a turbo Grand National that had good UOA's but the engine was in bits inside, his experience left me questioning the value of them for anything other than coolant and fuel dilution and now seeing this even more so.
Very nice work!
_________________________
ASE L1, Master. Deutsch Meisterbrief.

Top
#4678864 - 02/26/18 03:28 PM Re: Aircraft UOA fact [Re: Cujet]
NGRhodes Offline


Registered: 01/06/13
Posts: 326
Loc: West Yorkshire, UK
If its big enough to be filtered its too big to show in a UOA.
Maybe we need to better check our filters like we should our stools ?

Top
#4678948 - 02/26/18 04:50 PM Re: Aircraft UOA fact [Re: Cujet]
CT8 Offline


Registered: 10/09/14
Posts: 10963
Loc: Idaho
Have to rebuild ?
_________________________
"Don't let your preconceived notions get in the way of facts."
Geoff Metcalf

Top
#4679079 - 02/26/18 06:59 PM Re: Aircraft UOA fact [Re: Trav]
tig1 Offline


Registered: 01/03/09
Posts: 13659
Loc: Illinois
Originally Posted By: Trav
Interesting cam lobe mod for oiling. I notice some high revving bike engines use squirters above the cams lobes, which works well also.
There was a guy on the board with a turbo Grand National that had good UOA's but the engine was in bits inside, his experience left me questioning the value of them for anything other than coolant and fuel dilution and now seeing this even more so.
Very nice work!


The only way I would do a UOA would be for the condition of the oil. Dirt, fuel, or coolant.
_________________________
2007 Ford Fusion 227,000 miles
M1 0-20 EP
2017 Ford Fusion 49K
M1 0-20 EP
10,000 mile OCIs on both engines
M1 ATF and MC LV
M1 10-30 in all OPE
MC filters


Top
Page 1 of 2 1 2 >