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#11
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Newps wrote:
Mike Spera wrote: Overhauling cylinders is a crap shoot, even more than new ones. Think about this, if even ONE goes bad, your economics are shot. The delta between new and overhauled cylinders is not big enough. I don't know what your prices are but here an overhauled chromed O-470/520/550 cylinder is $350 vs a new cost of approx $1100. Newps, I suspect you are comparing an overhauled "stud assembly" vs. a new "complete assembly". Hardly "apples to apples". Happy Flying! Scott Skylane N92054 |
#12
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zatatime wrote in message . ..
On 23 Nov 2004 20:12:17 -0800, (JB) wrote: first run cylinders with 1660 hrs, and the engine was running great when removed; Can I ask why your overhauling a good engine so early? There's a couple of reasons really... first is that the engine had a prop strike some 50 hrs ago. oops. Renter pilot took off with the gear handle up; left gear started to retracted and bent the tips of the blades. Then the moron proceded to his destination 50 miles away, complete with bent tips; double oops. No sudden stoppage. A mechanic checked the runout on the flange and the accessory case gears and pronounced it fit to fly, which it did for another 50 hours. The instructors flying it said the engines ran great, very strong and used little oil. Then came a gear collapse on landing... luckily my engine was feathered at the time, blades horizontal, no damage to the engine/prop at all. So there's why the ship was parted out. I figure that if I'm building a shiny new RV-8, I ought to have a newly overhauled engine up front. I originally thought about just bolting it on and flying it, but I decided to have it torn down and checked out, especially the crankshaft, just for my peace of mind. John |
#13
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#14
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JB wrote: Well there's my answer... no -R on the serial, it's a factory o/h then. I'm still thinking about what to do with the jugs; I know the prices of new ones have come down quite a bit, with jugs from ECI and Superior going for around $900-1100 or so, but still... if these are first run cylinders with 1660 hrs, and the engine was running great when removed; there's probably lotsa life left in 'em after an overhaul, and I'd get to save several hundred bucks per jug. According to their ads, Lycoming replaces the cylinders with new when they overhaul an engine. George Patterson |
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