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06-10-2010, 09:33 AM | #1 |
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1940 engine oil capacity question??
How many quarts of oil is correct for a stock 1940 flat head V/8 with out a filter? I have heard 4 without a filter and 5 with a filter. Which one is correct?
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06-10-2010, 09:57 AM | #2 |
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Re: 1940 engine oil capacity question??
I do not run a filter on my flatheads and I have always used 4 qts. However, I always check the level of my dipstick and that I am at the fill line on the stick. Just a precaution.
The stock filters usually take up to another qt so that's why you have the difference in the numbers of qts with or without. |
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06-10-2010, 04:25 PM | #3 | |
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Re: 1940 engine oil capacity question??
Quote:
The engine (crankcase capacity) was designed to be five quarts. That's it. Simple truth documented by Ford archival drawings. The only oil pan on our prewar flatties that I know of that had a four quart capacity were the very first 60HP pans. They too were soon redesigned to a capacity of five quarts. I have yet to understand where folks keep coming up with four quarts? |
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06-10-2010, 04:27 PM | #4 |
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Re: 1940 engine oil capacity question??
My 1939 85 HP 221 will only hold 4 quarts to the top mark on the stick. No filter. I have never seen a 5 quart flathead that had no filter?
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06-10-2010, 04:42 PM | #5 | |
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Re: 1940 engine oil capacity question??
Quote:
1940 Ford model 022A Crankcase capacity is 4 qts. 1940 Ford model 01A and 09A Crankcase capacity is 5 qts. My 1940 Ford Owners Manual says; "Oil pan capacity 5 qts." (page 61) No mention is made of adding an additional quart if you have a stock oil filter. |
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06-10-2010, 05:11 PM | #6 |
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Kube
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Do you have a copy of the "Ford archival drawings" that you can post? My 46 owners manual and 1946 service manual states the capacity as 5 Qts "minus oil filter absorbtion". So, if you think the filter could absorb 1 qt than the crankcase capacity is 4 quarts. I don't personally think the filter could hold a full quart so how about a compromise? 4 1/2 quarts? Best bet is to fill it to the full line. John |
06-10-2010, 07:07 PM | #7 | |
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Re: Kube
Quote:
Oil filters were an option in those days. Usually (not always) they were installed at the dealership. The owners manual, service manuals and service letters did not take into account an oil filter. They merely stated what the crankcase capacity was, that is 5 quarts. I do not have copies of the drawings. I did however view them. The 022 model mentioned in another post is in fact the 60HP. I do not recall when Ford changed that to 5 quarts but can look it up in my notes of anyone desires. |
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06-10-2010, 07:12 PM | #8 | |
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Re: 1940 engine oil capacity question??
Quote:
I did look through my notes and see that Ford changed the capacity of the 60HP (022A) late in 1937. I made a note to the side of my research that dealers were supposed to change these 4 qt. pans when the cars were serviced and send the old pan to Ford for credit. All 85HP pans were 5 quart design. C'mon guys, I ain't makin' this stuff up. It is what it is. |
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06-10-2010, 07:53 PM | #9 |
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Re: 1940 engine oil capacity question??
Kube,
O K. As long as you can "recall seeing it" I will consider that the 1946 owners manual and service manual is wrong. John |
06-10-2010, 08:05 PM | #10 |
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Re: 1940 engine oil capacity question??
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06-10-2010, 08:40 PM | #11 |
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Re: 1940 engine oil capacity question??
Warren,
5 qt with filter. Chris |
06-11-2010, 02:33 AM | #12 | |
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Re: 1940 engine oil capacity question??
Quote:
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06-11-2010, 08:16 AM | #13 |
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Re: 1940 engine oil capacity question??
But when is a "quart" not a "quart"? US quarts are 32 ounces while Canadian quarts are 40 ounces. So for you (us) Canadians, it is really confusing - EH! I use 4.5 "liters" or so, in my 41, which is about the same as 4 US quarts - no filter, which gets me to the fill line on the dipstick that I have which I hope is the correct length.
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07-05-2010, 11:09 AM | #14 |
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Re: 1940 engine oil capacity question??
Make it an even 6 just to be sure
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07-05-2010, 11:35 AM | #15 |
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Re: 1940 engine oil capacity question??
Just because it will hold 5 quarts, does that necessarily mean it needs that much? Just wondering.
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07-05-2010, 12:17 PM | #16 |
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Re: 1940 engine oil capacity question??
4 quarts without a filter fills all my old Fords to the full line on the dip stick with no filter. Any more then that and the oil drips out the cotter pin hole. I also find it takes about 4 3/4 quarts with a filter. 105,000 miles on one engine with 4 3/4 and a filter and still running good. G.M.
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07-05-2010, 03:33 PM | #17 |
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Re: 1940 engine oil capacity question??
I can only comment on the 40 Ford 85 HP pan, cuz that's what I've got. I took the pan after it was cleaned, leveled it from front to back and side to side. Then I filled it with (4) four quarts of Kerosene. At 4 quarts, the fluid level is above the sump area in the pan. When I added an additional quart, the level gets real close to the rear oil pan seal, and it becomes very apparent that without a pan baffle, when braking, too much oil is sent forward and will pile up and leak, I think. I like 4 quarts: + 1 with a filter
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07-06-2010, 04:26 PM | #18 |
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Re: 1940 engine oil capacity question??
4 quarts with no oil filter. I like the filter but I do not trust the old original cloth lines.
Definitely 4 quarts on a stock 1940 oil pan. Travis Brown Kolb CO. |
07-06-2010, 04:50 PM | #19 |
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Re: 1940 engine oil capacity question??
Then how come TSB #6000 page 3 dated Feb 6 1942 clearly states the capacity is 5 quarts.
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07-06-2010, 06:08 PM | #20 |
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Re: 1940 engine oil capacity question??
I wonder the same thing. Its kind of funny the things published in those old books We will never figure out the mistakes that was made in black and white.
I sure am not interested in an argument or debate over oil pan capacity I am simply stating the facts 4 Quarts in a 1940 pan. Travis |
07-06-2010, 07:02 PM | #21 |
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Re: 1940 engine oil capacity question??
Ok. Now my head is starting to hurt. I have a set of Ford manuals on CD put out by Detriot Iron. I find in the Engine and Tune Up, Section K, page 37 the capacity is 4 IMPERIAL quarts. 4 imperial qts equals 5 US qts. The only V8 that these manuals state having a 4 US qt capacity is the 60. The stick in my pickup shows full with 4 US quarts. I do have a filter so I run 5 US quarts.
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07-06-2010, 08:45 PM | #22 |
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Re: 1940 engine oil capacity question??
That sounds like 4 in the pan to me.
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06-20-2016, 03:52 PM | #23 |
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Re: 1940 engine oil capacity question??
5 US Quarts = 4.73 Liters
5 US Quarts = 4.16 Imperial Quarts
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06-20-2016, 06:48 PM | #24 |
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Re: 1940 engine oil capacity question??
5 qts according to the 1939 Deluxe 85HP Owners' glovebox manual.
Same engine as the '40. |
06-20-2016, 09:23 PM | #25 | |
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Re: 1940 engine oil capacity question??
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06-20-2016, 11:40 PM | #26 |
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Re: 1940 engine oil capacity question??
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