Amount of oil remaining in the engine
 

As part of pulling my engine to do some work on the AA I decided to see just how much oil is left in the engine after draining the oil.

I drained the oil allowing about 10 minutes of time until I put the plug back in.
Then I pulled the engine and mounted it on my engine stand.
After getting it on the stand I pulled the drain plug and caught the oil. Put the plug back in, tipped and rotated the engine several times over the next couple of days pulling the plug each time and catching the oil.
17 ounces is what was left in the engine.

Your results may vary :)

Re: Amount of oil remaining in the engine
 

Thanks Dave for your experiment. So you found a tad over 1/2 quart of residual oil in contrast to the popular belief that there is 1 quart of residual oil in the engine.

Things that may affect your experimental finding:
>When you took / take the engine apart, are there any holes in the dipper troughs in the oil pan tray?
>Leakage of oil from the valve chamber via worn oil pump bushings / shaft, and excessive main and camshaft bearing clearances.

Re: Amount of oil remaining in the engine
 

I usually pull the pan with the engine still in the upright position, just because!

Re: Amount of oil remaining in the engine
 

Guten Abend,

yes, what Dave wrote I can confirm. A few months ago I had to remove the engine. Also because of the pockets in the valve chamber and because the soldered-in thread insert for the drain screw has a collar, there was a considerable amount of residual oil.

I didn't measure it, but I also guess about 1/2 liter / 16 ounces.

Re: Amount of oil remaining in the engine
 

Thank you Werner. I've been trying to work out what they are talking about 17 ounces? 1/2 a quart? It's a different language especially when the US gallon and US ton are unique to that country.
At times, I have tried to find a conversion table or conversion factor but so far, I haven't found one that specified whether the ounces/quarts are US or imperial. Very confusing!

Re: Amount of oil remaining in the engine
 

Hey Synchro,

Blame it on the British. Since Australia is still part of “Empire”, I would think you would have kept the weird British System. Wish the U.S. had gone to the Metric System. They teach it in science classes over here but it hard to visualize because everything else is in pints, quarts, and gallons.

David Serrano

Re: Amount of oil remaining in the engine
 

Bob you make a good point. However I won't be pulling the pan on the engine as it is coming out for other non engine related maintenance along with putting a higher compression head on it.
Engine was completely rebuilt 5000 miles ago by Herm Kohnke so I'm pretty sure that excessive wear isn't a factor on this one.

Re: Amount of oil remaining in the engine
 

Dave, I understand the British system (I grew up with it) but why did you Americans fiddle with it? If you're going to use a "gallon", why not use the "proper" or original gallon. Likewise a ton. I've never heard an explanation for why liquid measures and weights were changed by you guys but not distances. I'd love to hear if anybody can explain it, really.
The confusion IMO, comes about because we don't know which gallon or quart or ton is being used when figures are quoted. If everybody used metric, we would all know what is going on. As far as I know, the US is the only place in the world that is not.
Like you I think the US would be better off gong metric but it's not up to me. When we changed, as I remember, things went quite smoothly with the possible exception of the more senior people who had difficulty for a while getting used to he new way. Kids these days have no clue about the imperial system.

Re: Amount of oil remaining in the engine
 

Wikapedia is your friend: https://en.wikipedia.org/wiki/Compar...rement_systems


Now you know.

Re: Amount of oil remaining in the engine
 

That certainly shows how complicated having two imperial systems has made things!
Oh how simple things would be if we all used metric (just ask NASA!).

Re: Amount of oil remaining in the engine
 

I thought the accepted amount was 1/2 a qaurt(32oz/.946 liters) or 16ish ounces near to a half a liter. How did rotating the engine get more oil out of the plug? I was expecting you to have pulled the pan and poured the excess into a measure.

Re: Amount of oil remaining in the engine
 

Guten morgen Werner, and to all. The reason we here in the States haven't gone metric is because our leaders are just plain stupid!

Re: Amount of oil remaining in the engine
 

Maybe political but why change something “we” setup to be our measurements. That’s like saying we should change our language.
Sorry just could not resist.😡

Re: Amount of oil remaining in the engine
 

Yes, the non-metric system has many disadvantages!

Machines that are manufactured for the USA or sold to Europe from there require different manufacturing machines and other tools. This makes these devices very expensive.

There have also been serious accidents. A Boeing crashed in the USA because gallons were mistaken for liters when checking fuel.

The first Ariane 4 had to be blown up because metric and non-metric values ​​were incorrectly implemented in the flight control system.

Another major confusion is that the USA not only uses inches for thread of screws, but also use other flank angles. An English inch screw does not fit on an American nut!


But we stray away from the topic. I am not entitled to politicize here.

Re: Amount of oil remaining in the engine
 

I rotated the entire engine while it was on the engine stand not just the crank shaft.