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CJohnston(at)popsound.com
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 Posted: Fri Sep 15, 2006 7:55 pm Post subject: engine inspections? |
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hey all -
i'm looking into buying an overhauled engine from a private seller, and wondered what cost is usually associated with having an engine shop disassemble and inspect the engine? i'm looking at an 0-540 E4B5 that i want to change over to fuel injection, and also install electronic ignition instead of mags. as an ex-drag race engine builder, i have a pretty good handle on engines in general, but i've never dealt with an aircraft engine, and would rather have a professional make sure all is good. any and all advice would be GREATLY appreciated. also the engine is an O-540 E4B5, which i think is appropriate for the RV-10 from the research that i did, but if somehow i've misread or misunderstood the engine identifiers that are comparable, please, someone let me know before i waste a bunch of money!
thanks in advance!
cj
#40410
fuse
www.perfectlygoodairplane.net
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Tdawson(at)avidyne.com
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| Posted: Sat Sep 16, 2006 5:19 am Post subject: engine inspections? |
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$4000 to $5000 for tear-down, inspection, and re-assembly, assuming all is okay. Don't know on changing ignition or injection.
TDT
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pitts_pilot(at)bellsouth.
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| Posted: Sat Sep 16, 2006 9:52 am Post subject: engine inspections? |
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Chris, I don't know how much it would cost for a shop to do it. Your
racing engine was far better technology ...... the aircraft engines are
simple as a rock. First I'd poke a small light up through one plug hole
and look into the cylinder through the other to check for rust. Look
through both plug holes! Then I'd remove the cylinders on both sides to
access the cam to see if it has rusted on the faces. You can pull the
cylinders off (beg, borrow or steal the cylinder base wrenches) 'till
the piston pin is visible and leave the piston in the cylinder. Just
don't let the con-rod bang against the case. Then use a mirror to check
the cam follower faces for spalling. This is the weak spot in an engine
that has sat for a long time. The bottom end seldom is a problem, but
you won't know until you run it and find metal in the filter. If you
decide to tear down the engine yourself, splitting the case is the
hardest part. You can use a hardwood block and a heavy hammer to
alternately rap the through bolts and it'll part OK. Another good
indicator of health is the lash in the oil pump gears. Just bget both
manuals ..... ACS has them or you can order direct from Lycoming .... or
Continental ....... whatever you have. Shoot, if you still have your
tools from the racing days ..... you won't have to buy a piston ring
compressor!!!!
Linn
do not archive
Chris Johnston wrote:
| Quote: | hey all -
i'm looking into buying an overhauled engine from a private seller, and wondered what cost is usually associated with having an engine shop disassemble and inspect the engine? i'm looking at an 0-540 E4B5 that i want to change over to fuel injection, and also install electronic ignition instead of mags. as an ex-drag race engine builder, i have a pretty good handle on engines in general, but i've never dealt with an aircraft engine, and would rather have a professional make sure all is good. any and all advice would be GREATLY appreciated. also the engine is an O-540 E4B5, which i think is appropriate for the RV-10 from the research that i did, but if somehow i've misread or misunderstood the engine identifiers that are comparable, please, someone let me know before i waste a bunch of money!
thanks in advance!
cj
#40410
fuse
www.perfectlygoodairplane.net
|
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Vern(at)teclabsinc.com
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| Posted: Mon Sep 18, 2006 9:25 am Post subject: engine inspections? |
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Hi Chris,
There is a lot you can learn about an engine before paying for an
inspection.
1. Get the serial number and call Lycoming with it. They can tell you
any dealing they have had with the engine.
2. Buy a copy of the overhaul and maintenance manual for the engine
(available through Lycoming or at www.escoaircraft.com).
3. Get an ADs list from either Lycoming or the FAA website. See if these
are complied with. Some people will say these are not need because of
being an experimental, but most ADs are for you safety.
4. Go to Lycoming site and make bloody sure the crankshaft is not
affected by the crank AD. This is a BIG ticket item.
5. Ensure the engine doesn't have ECI Classic Cast cylinders. Again,
another big ticket item with an AD on them.
6. Get third party feedback about the overhualer. Also find out if the
overhaul was to new of service limits. Call the EAA chapter in the area
of the overhualer and ask them if they have any experience with them.
7. Ask for copies of the overhaul receipts. Was the engine case line
board? Was the cam and crank reworked, replaced? Is it undersized and by
how much? Are the cylinders new over overhauled?
8. Look through the log and find out how many hours total time and times
it has been overhauled? I have been told three overhauls are about all
that can be expected from a case. But this was one person's opinion.
Check the logs for teardown inspection (read sudden stoppage) or thing
related to prop strikes. Was it repaired correctly after such an event?
9. Look at how long and how the engine has been stored.
10. Also check the engine mounts the RV-10 uses the small holed mounts
#70456.
11. If the engine is mounted and running get a hot compression test and
oil analysis (about $19). Check what the plugs look like. If this isn't
possible get a cold compression test. If the engine is preserved,
neither of these will be meaningful or possible.
12. If possible fly behind it. Check cold oil pressure and hot oil
pressure note the difference between these. Are they within limit for
that specific engine?
13. Try and get the N number for the plane it came out of and look it up
on the NTSB website for possible accident involvement.
And now the disclaimer: This list is not an all inclusive inspection
list and doesn't replace an inspection. But it will help you eliminate
the "also runs" from your list for very little cash. I'm not an IA or an
A&P but I have been in the same position you're in and these are a few
points I have gleaned.
Hope this is helpful,
Vern (40324 wings; left ready to close right maybe another week:)
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