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oil line quandry; upper hose from filter goes where?
Topic Started: Aug 13 2011, 08:30 PM (869 Views)
Galen
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Unlike everyone else it seems, there is no threaded opening on the left side of my engine block for the hose from the oil filter- just the small oil gallery plugs in a row. Noe in the rear left of the block is the upper hole for the vertical thin metal oil line to the head and another small threaded hole just below it. Now on the right side of the block below the distributor is a little larger (1/2 inch) threaded hole open- could this be used for connecting the upper oil filer hose?

I am confused.
1954 CJ3B -Transport Yellow-
1953 B4 Dodge Power Wagon
1941 Dodge WC 1/2 ton military
1967 Plymouth Valiant
Culpeper, VA
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Gunslinger
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I've got a 3A with an L134 engine, my oil pressure gage line goes into the most rearward of the 1/4 inch holes in the block left side. However it requires a fitting, the block should be 1/4 pipe thread, and the hose is something else. I say that because I've purchased a couple of hoses and they seem to have different threads and sizes. I would take the hose to NAPA, and have them find a fitting for you that mates to the hose and the 1/4 pipe hole.

Just as an after thought, I did buy a Sunpro o/p gage for mine, it came with a bunch of fittings and one of them did fit into the block. Just an option. I did find that the Sunpro was more accurate at the lower pressure readings/
1950 CJ 3a named Triple X, 1997 Cherokee Sport, Colt 1911 National match
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yjcanibul
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Galen are you assembling a new engine or has your's been running ?

on my 57 the dirty oil is pumped into filter from this fitting just
below fuel pump , mine has the oil filter relocated to drivers
fender so i am not certain if this is standard , since my hoses are
longer than std i had local shop to build me some.

the return line goes to the crank timing cover , the purpose of the hard line
at back of block drivers side is to supply oil to upper valve train so you
cant survive without it


Posted Image
57 3B : big speedo / Hurricane / YF 938 SD / IAY-4012 / T90 / D18 / 5.375 final drive / open diffs / Firestone 6ply Military NDCC / 12v Delco SI alt / Kayline Top / venting windshield / tub patched / "still fixing leaks one at a time"

89 wrangler : h/duty axles + 5spd / 200+hp 4.2L / arb locked / multiport fuel inj / warn hubs+winch / 1/4 mil km / fishing+trail riding / gets me to work
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Galen
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Thanks! I found the fitting right there below the fuel pump BUT, in my case it had a pug here! Fortunately i was able to turn it. Why was this not used before- strange. And th And the open hole below the distributor? Any thoughts on this?
1954 CJ3B -Transport Yellow-
1953 B4 Dodge Power Wagon
1941 Dodge WC 1/2 ton military
1967 Plymouth Valiant
Culpeper, VA
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Gunslinger
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On mine that open hole below the Distributor is the block drain for the anti freeze. You do need to plug it!
1950 CJ 3a named Triple X, 1997 Cherokee Sport, Colt 1911 National match
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yjcanibul
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like gunslinger said its the block drain , this pic i took the spigot out and its
plugged with debris i had to use coat hanger to clean ....


Posted Image
57 3B : big speedo / Hurricane / YF 938 SD / IAY-4012 / T90 / D18 / 5.375 final drive / open diffs / Firestone 6ply Military NDCC / 12v Delco SI alt / Kayline Top / venting windshield / tub patched / "still fixing leaks one at a time"

89 wrangler : h/duty axles + 5spd / 200+hp 4.2L / arb locked / multiport fuel inj / warn hubs+winch / 1/4 mil km / fishing+trail riding / gets me to work
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Gunslinger
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There is a theory out there that the oil filter line will rob oil from the front bearing, causing premature failure. Some mechanics plug this under the assumption that because the oil filter is a bypass system, only taking 10% of the oil flow, it really isn't doing that much anyway. For a restoration they may have a point, new oils are good for a lot more miles than most of us will put on our jeeps in a year, and we will most likely change oil once a year anyway, so why filter it. Its a point of view. You get to decide if you want to filter the oil or not.
1950 CJ 3a named Triple X, 1997 Cherokee Sport, Colt 1911 National match
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skiprocks
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This thread brought up a question with my own willys. The "mega" parts box that came with it when I purchased it several years ago included two oil filter canisters, neither of which are mounted. I haven't been able to run it much and change the oil religiously, but now I'm going to reinstall mine as well.
Skip Owens
1961 Willys CJ5 - F134, older restoration
1961 Willys Pickup - L226, 2006-8 frame off restoration
1930 Ford Model A Coupe
NE Florida
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yjcanibul
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this is excellent pic of oil flow found in the '53 3B mechanics manual , notice
the arrows show pressure from oil pump both directions and it does
appear to pump into filter housing from same port below fuel pump

one thing i notice when opening filter housing is the oil pooled in it is much darker
than I can see on the dipstick, and if you dont tighten the lid on the housing you'll
soon find out if you got good oil pressure or not :rolleyes:

Posted Image


edit: Galen, here's a good picture of drivers side rear line hookup, the port
just below the hard line at rear is where my oil pressure switch is
Posted Image
57 3B : big speedo / Hurricane / YF 938 SD / IAY-4012 / T90 / D18 / 5.375 final drive / open diffs / Firestone 6ply Military NDCC / 12v Delco SI alt / Kayline Top / venting windshield / tub patched / "still fixing leaks one at a time"

89 wrangler : h/duty axles + 5spd / 200+hp 4.2L / arb locked / multiport fuel inj / warn hubs+winch / 1/4 mil km / fishing+trail riding / gets me to work
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