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#1
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Stephen N Mills wrote:
Costs: Our A&P has recommended three engine shops: America's Aircraft (OK), Airmark Engines (FL), and Graham Engines (GA). I have talked to all three. Each advised cam replacement, not major overhaul. I would pay attention to them. I think your A&P is going a bit overboard. George Patterson Why do men's hearts beat faster, knees get weak, throats become dry, and they think irrationally when a woman wears leather clothing? Because she smells like a new truck. |
#2
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What is the condition of the rest of the engine? What are the
compressions? (Consider giving it an automotive style compression test also, those sometimes reveal things a static one won't). End play on the crank? Oil usage? Oil seepage out the ends of the engine? Does the cockpit smell oily when the heater is on? Scope the cylinders. Valve wear? No one really KNOWS what the future of your engine may be. It is a pity the previous rebuild did this. Perhaps they did not replace the cam? What else didn't they replace? (the bearings?). If all they did was top it, you did ok. But if all they did was top it, perhaps you should go for a full rebuild now. The bottom line is: HOW MUCH MONEY DO YOU HAVE? Do the best you can afford. |
#3
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OK,
Here's another point to consider. About 4 years ago I had a couple of bad cylinders on a Continental IO520. All in all I decided to "fix it up and get a couple of more years out of it". Good economy, right? Turned out that the cost of overhauls for that engine have climbed $8,600 since that time! (Using a Superior quote as a benchmark... $18,900 up to $27,500). Getting "a few more years out of it" turned out to be VERY false economy. All other factors aside, give some consideration to the economy of overhauling it NOW to avoid price increases. The costs of metals and metal parts have been rising astronomically in recent years! Rich Doug wrote: No one really KNOWS what the future of your engine may be. It is a pity the previous rebuild did this. Perhaps they did not replace the cam? What else didn't they replace? (the bearings?). If all they did was top it, you did ok. But if all they did was top it, perhaps you should go for a full rebuild now. The bottom line is: HOW MUCH MONEY DO YOU HAVE? Do the best you can afford. |
#4
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Steve, the reality is that the inactive partner will refuse to spring
the extra bucks for a reman engine... So, you and active partner will have to pay the difference... Based on your posting I suspect that is not in the works... You will, in the end, decide on replacing the cam and lifters and taking a chance on the engine making TBO.... No FBO would OH at 750 hours - he would IRAN and put it back in service... So, quit gnashing teeth - consider you and active partner pulling the engine in the hangar, boxing it, and shipping to the engine shop for IRAN... On return you two move the plane to the A&P shop, help him with the install and get his sign off on the logs... Easy money for him, less expense for you, and both of you get some great experience... win-win... denny |
#5
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Stephen N Mills wrote:
Advice? Any advice about the path to take, and any pireps on the three engine shops mentioned (or any others) will be most humbly and gratefully received. If you're just replacing the cam, you don't need an overhaul shop. Either way, replacing the cam or the complete overhaul, I'd go with a local shop rather than shipping parts all over the country. Just imagine what happens when everything doesn't quite come together right afterward, and you are pursuing warrantee fulfillment with a shop several states away. Even if the shop is desirous of helping, the distance makes it a hassle. There's got to be someplace in Atlanta or nearby that can do the work. |
#6
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![]() Advice? Any advice about the path to take, and any pireps on the three engine shops mentioned (or any others) will be most humbly and gratefully received. If you're just replacing the cam, you don't need an overhaul shop. Either way, replacing the cam or the complete overhaul, I'd go with a local shop rather than shipping parts all over the country. That's a great point. We have been very happy with our decision to use our local shop to rebuild our O-540 in 2002. Although you still end up shipping *some* parts all over the place, and (of course) the new engine parts come from the factory. (In our case, Superior, which has allowed us to dodge ALL of the Lycoming O-540 ADs thus far...) -- Jay Honeck Iowa City, IA Pathfinder N56993 www.AlexisParkInn.com "Your Aviation Destination" |
#7
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Jay Honeck wrote:
Advice? Any advice about the path to take, and any pireps on the three engine shops mentioned (or any others) will be most humbly and gratefully received. If you're just replacing the cam, you don't need an overhaul shop. Either way, replacing the cam or the complete overhaul, I'd go with a local shop rather than shipping parts all over the country. That's a great point. We have been very happy with our decision to use our local shop to rebuild our O-540 in 2002. Although you still end up shipping *some* parts all over the place, and (of course) the new engine parts come from the factory. (In our case, Superior, which has allowed us to dodge ALL of the Lycoming O-540 ADs thus far...) On the other hand, if you are planning to sell before your next TBO, you might consider a nationally known shop. In general, I think buyers prefer an engine by a nationally known shop instead of a local guy they know nothing about (assuming you want to be able to sell to non-local buyers). I know when I have looked at engine logbooks, an overhaul by a small shop that I can't find information on by googling is a turnoff. |
#8
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On the other hand, if you are planning to sell before your next TBO, you
might consider a nationally known shop. In general, I think buyers prefer an engine by a nationally known shop instead of a local guy they know nothing about (assuming you want to be able to sell to non-local buyers). I know when I have looked at engine logbooks, an overhaul by a small shop that I can't find information on by googling is a turnoff. Good, valid points. On the OTHER other hand, most really good planes sell locally without advertising. And, of course, assuming you're planning to keep your plane, it doesn't matter at all. -- Jay Honeck Iowa City, IA Pathfinder N56993 www.AlexisParkInn.com "Your Aviation Destination" |
#9
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Seems to me that for this decision you need to understand what the
other parts are like. What kind of OH was it? New cylinders? A wise mechanic who OH one of my engines always put in new camshafts. His theory: You hang the camshaft on a string and build the engine around it. A re-ground one might not make it thru the second OH. So was this last OH to service limits? If so, it's talking to you. If it was a decent OH, you might be tempted to repair it. Bill Hale |
#10
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![]() "Stephen N Mills" wrote in message ... Vicky, our '75 Cardinal RG, is sick. We changed the oil and got a report of iron in the oil analysis (from Blackstone) and iron particles in the filter (from Second OilPinion). Hmmm... 26 tach hours later, same thing. Pulled a cylinder: yep, cam spalling. (Assume wailing, rending of garments, gnashing of teeth here) The engine is a Lycoming IO-360-A1B6D, 750 hours since first major in Aug 2001 Other factors: 9000 hours on the airframe. Fresh paint, poor (not 'bad') interior. Decent IFR avionics: GX60, KX155 w/ GS, GTX327, JPI-700, no autopilot. 750 (+?) hours on the dry vacuum pump; this will be replaced at this time. Also will be replacing with the lightweight starter. Human factors: myself and two partners; one of whom is inactive and has been looking to sell out. We fly about 200 hours a year. With a new partner, we expect to increase that. Options: Our A&P is leaning towards a major overhaul rather than just a cam replacement. I am concerned about possible other damage to the engine from those iron particles riding around in the oil. But our inactive partner (I haven't talked to him yet) will probably want to get out for minimum bucks. Active partner and I are looking at long-term value. We plan on owning this plane for a long time. Costs: Our A&P has recommended three engine shops: America's Aircraft (OK), Airmark Engines (FL), and Graham Engines (GA). I have talked to all three. Each advised cam replacement, not major overhaul. The price seems to be about $2000 for our A&P to r&r the engine, ?? for shipping, and $5000 to $6000 to the engine shop. Time frame of about 3 to 4 weeks at the shop. All of this assumes no additional problems are found when they open it up. Wither? While active partner and I would love to get a factory reman'd non-D engine, that does not seem reasonable. And we don't even want to think about the cost of that. And even doing a major would move our current bill from about $8000 to $17000 or more. Advice? Any advice about the path to take, and any pireps on the three engine shops mentioned (or any others) will be most humbly and gratefully received. N2679V, 'Vicky' '75 RG @ PDK, Atlanta Steve Mills, in major bummed-out mode |
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