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  #1  
Old 01-06-2009, 10:17 PM
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pazmanyflyer pazmanyflyer is offline
 
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Location: Litchfield Park, AZ
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Question Homemade pre-oiler

Does any one have plans or pictures of a homemade pre-oiler for their overhauled/new engine?
Here's my case...We purchased a rebuild O290 and dad wants to have some type of pressurized system to pass oil through the engine oil passages before we re-install the cylinders. (Cylinders removed to inspect cam, crankshaft and the rest of the case internally.) This way dad, and our AP/AI signing the books, have visual confirmation that the oil passages internally/externally are not blocked. I have ideas but if someone else knows how this can be done I'd appreciate any information, plans, pictures you have on it.

Thanks
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Carlos in Arizona
Wittman Tailwind W8 N53CH (built & sold)
Pazmany PL-1 N2029 (bought & sold)
RV7 - N537TC (reserved & building)
Emp & Wings done - working on fuselage - finish kit received

"The air is an extremely dangerous, jealous and exacting mistress. Once under the spell most lovers are faithful to the end, which is not always old age." - Winston Churchill

Last edited by pazmanyflyer : 01-07-2009 at 12:08 PM.
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  #2  
Old 01-06-2009, 10:38 PM
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Default If

You install and accumulator it can do it for you.

Frank
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  #3  
Old 01-07-2009, 05:36 AM
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pierre smith pierre smith is offline
 
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Default Many different tanks........

.....have been adapted, Carlos...from Freon bottles to small fire extinguishers.

Essentially, a way to pour oil in, install a cap/plug, with an air fitting and a hose to attach to the oil pressure sending port and open the valve.

Regards,
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  #4  
Old 01-07-2009, 07:59 AM
noelf noelf is offline
 
Join Date: Nov 2007
Location: Cary, N.C.
Posts: 754
Default Two possibilities on this...

1) follow the Lycoming SB on pre oiling...Basically it says to pull the spark plugs and crank the engine until you get oil pressure.

1A) Van's Builders Instructions suggest that you disconnect the oil pressure line at the oil pressure sensor (manifold), spin the engine as above, until oil seeps out of the oil pressure line, reconnect everything, and then proceed with an engine start.

2) In the Orndorff (sp??) videos, his pre-oil procedure was to fill a pump-up plastic 2gal weed sprayer can with oil. Remove the oil pressure line (and the restrictor fitting) from the engine, and adapt a fitting onto the spray can hose that will fit the engine. Put oil in the can, pump up the sprayer, and oil will be forced into the engine and all the oil passageways. I think he indicated that it took several iterations of this, but he put the entire 7 -8 qts of oil in the engine this way.
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  #5  
Old 01-07-2009, 11:12 AM
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pazmanyflyer pazmanyflyer is offline
 
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Location: Litchfield Park, AZ
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Default Building a pre-oiler

I got a few emails from the lycoming guys at the yahoo groups and thought I'd post a few pictures of what I'm doing to pre-oil my engine. I'll be buying supplies tonight at my local Home(builders) Depot aviation department. 20-40 psi should be just fine to push oil through the case to check for free and clear passages.









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Carlos in Arizona
Wittman Tailwind W8 N53CH (built & sold)
Pazmany PL-1 N2029 (bought & sold)
RV7 - N537TC (reserved & building)
Emp & Wings done - working on fuselage - finish kit received

"The air is an extremely dangerous, jealous and exacting mistress. Once under the spell most lovers are faithful to the end, which is not always old age." - Winston Churchill

Last edited by pazmanyflyer : 01-07-2009 at 12:12 PM.
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  #6  
Old 01-07-2009, 12:16 PM
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Default

Beware when you disconnect the air hose, whatever oil is left in the rig is going to come right back out at you if it still has pressure :-).
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  #7  
Old 01-07-2009, 01:52 PM
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pazmanyflyer pazmanyflyer is offline
 
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Location: Litchfield Park, AZ
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Default Pre-oiler

Quote:
Originally Posted by scard View Post
Beware when you disconnect the air hose, whatever oil is left in the rig is going to come right back out at you if it still has pressure :-).
Good point Scott. In that case I may use shut off valves on each end.
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Carlos in Arizona
Wittman Tailwind W8 N53CH (built & sold)
Pazmany PL-1 N2029 (bought & sold)
RV7 - N537TC (reserved & building)
Emp & Wings done - working on fuselage - finish kit received

"The air is an extremely dangerous, jealous and exacting mistress. Once under the spell most lovers are faithful to the end, which is not always old age." - Winston Churchill

Last edited by pazmanyflyer : 01-07-2009 at 01:55 PM.
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