How much oil.. enlarged pan? 300 5cyl turbo D - PeachParts Mercedes-Benz Forum

coachgeo · #1 05-23-2003, 11:24 PM

How much oil to put in it... Im afraid to over fill

ok..... to mount this engine into a Unimog you have to tilt it 13 degree's. The PO then modified the oil pan and brought its bottom back to level.

here is the pan. (engine was out for clutch job at the time)

coachgeo · #2 05-23-2003, 11:26 PM

is this modified? What does each letter mean? Also there are two scratch marks.. can't tell if they are on purpose or accidental they are labled as "Mark"

william rogers · #3 05-24-2003, 12:12 AM

measure the added part then do the math to find how many cubic inchs you have added there are 57.75 cubic inchs in a quart......
William Rogers.......

coachgeo · #4 05-24-2003, 12:31 AM

the added part is a wedge not a square or rectangle... remember.. the engine was tilted 13 degrees..... thus it is a Wedge that had to be added to bring it back to level.

I'll try this formula and see what I get;

Pyramid= (1/3) * (base area) * height

edit..... nope... a pyramid would be wrong formula Im sure. Any other suggestions

what if I calculate it as a rectangle and divide by two (hight*width*length)/2

Im thinking this cause if I see it right any two equal wedges put atop each other the right way forms a rectanguler box as a whole.. hmmm maybe not...... that picture in my head is assuming one angle is 90 degrees on the two equal wedges.

coachgeo · #5 05-24-2003, 12:52 AM

ahhhhhh.... what does a normal 617.952 engine hold in oil anyway?

rwthomas1 · #6 05-24-2003, 01:42 AM

Dividing the rectangle by 2 will get you there. Stock they hold 7.9US quarts. Cool truck! RT

coachgeo · #7 05-24-2003, 01:43 AM

Guru tech friend says Im right..

and can be calculated in simular fashion as : B x .5H x D

still assuming wedge is a right angle one

coachgeo · #8 05-24-2003, 02:07 AM

oh wait....... I have to subtract how much oil the oil cooler holds since at the moment those hoses are just put together since the oil cooler went out..

Damn........ this is a word problem in a math book

If the oil pan held 7.9 quarts before modification
and the oil coolerheld (?) but cooler no longer exist
and the oil pan copacity was increased in a wedge shape by a base of B and hight H and a depth of D....

how much oil would u need to fill your pan and hoses?

agggggggggggggggg.

Anyway...... how much oil does oil cooler hold... assuming the 7.9qt above included this.

leathermang · #9 05-24-2003, 08:37 AM

I think you are going about this from the wrong direction...
Did the PO extend the oil pickup tube to fit the new pan ?
If yes,,,, then you can pretty much use the 8 qt figure....
The main thing is that you do not want to foam the oil by having the crankshaft or the air from the crank turning whip the oil.
I am assuming that the PO was trying to avoid this with the addition of the oil pan capacity... particularly since he put the extra space at the bottom as opposed to the sides, where many race pans are extended.
As long as you do not have the oil level any higher than it would have been when the engine was level and have 8 qts in the system you will be fine.
If you want to find out how high a CERTAIN amount of oil is, without drilling holes in the pan.... you can get one of those thermometers which stick to the side of propane cans to tell how much is still in them..... then pour already hot oil into the pan and watch the thermometer show the oil level. Keep marking your dipstick to calibrate it...
It sounds like you are trying to " take advantage" of the larger oil pan, when the PO may have only intended it to counteract the tilt of the engine to avoid foaming....

coachgeo · #10 05-24-2003, 11:03 AM

ahhhhhhh...... very good points Leather. I was assuming I had to deal with increased oil copacity.

Ok..... so how much WITHOUT the oil cooler assuming the 8qt (7.9) is including the oil cooler. Remember my oil cooler lines at present are just plumbed together cause of a bad oil cooler leak.

leathermang · #11 05-24-2003, 11:20 AM

First I am assuming that small a tilt will not cause oil to be pooling someplace instead of flowing back to the bottom of the pan...

So, you need to know about how much oil is ' running around' when the engine is running... how much is NOT in the oil pan during operation..

IF the owner extended the oil pickup to the same distance from the bottom of the pan that the original had... then you can just go with the 8 qts...

If he did not, then you just need to be sure the oil suction tube is never sucking air, no matter what kind of bumps or hills you encounter...

Actually , if the PO did NOT extend the pickup... then you should consider doing that yourself ( IMO ).

I assume your oil cooler is either designed so the oil does not syphon out.. or has valving to keep it full... so in that case... when you start the engine and fill the oil cooler.... you can then drain the oil and measure it... and I think you would be safe to then put 8 qts back into the actual pan.... but for future reference you should mark down the amount the cooler and lines hold... then if you have them empty again you can just stick the total amoun in without worrying...

coachgeo · #12 05-24-2003, 11:39 AM

the cooler that the PO installed was an MB cooler and both ports were on top so it could not drain out and I dont think it could siphon either due to this. I assume it just replaced the stock cooler that goes with a 617.952. It is NOT installed cause it is cracked. I just have the hoses plumbed together. Guess I can fill it with the old oil and see how much it holds and subtract that from the 7.9 ASSUMING the 7.9 includes the cooler.

From what I can tell the coolers overall size looked the same as the 617 turbo I saw in the junk yard. (to bad the cooler in it is crunched some)

coachgeo · #13 05-24-2003, 06:44 PM

Quote:

Originally posted by coachgeo
is this modified? What does each letter mean? Also there are two scratch marks.. can't tell if they are on purpose or accidental they are labled as "Mark"

Any one got info about dippy sticks?

This is the White topped Dipper. Pic is further up in this thread.

coachgeo · #14 05-24-2003, 07:27 PM

Well I took a guess. My guess was the modified dip stick was to show proper oil level in modified oil pan.

Another MB person said that marks B and D on the dip stick were stock. I assumed that with the bigger pan being deeper than stock then the markings the PO put on the stick (C and E) were to be the new markings for this pan. C =full and D =Qt. low

To accomplish that it took 8 quarts w/out the oil cooler.

I cant afford Syn right now so I used Lucas oil at 20% and regular heavy duty diesel rated oil. Besides in a month or so Ill be draining it alll again to put in a new oil cooler.

PaulH · #15 05-25-2003, 02:32 AM

According to my MB Maint. Manual (USA), your dip stick is for a 617.95 diesel. Oil cap. during an oil & filter change is 7.5 liters. The oil pan itself has a cap. of 6 liters. The handle is round per the pictures. Ref. 0101.40/1 I'm not saying that this is correct, but, it is what the book says. (Then, if the pan has been modified, this info is moot.) Good Luck! Paul