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Old 12-29-2010, 08:25 AM
cowboykilroy cowboykilroy is offline
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Default 4.0 sohc oil pan

I have an 01 edge 4x4 ext cab with the 4.0 sohc .The oil pan has a removable bottom cover ( not a skid plate) The plate comes off and you should be able to see the oil pump and rods. My questions are, can you access enough to be able to change rod bearings and oil pump?and is this 4x4 only? Because to get the complete oil pan off, the engine has to come out.
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Old 12-29-2010, 10:11 AM
Psychopete Psychopete is offline
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Default Re: 4.0 sohc oil pan

If rod bearings NEED replaced, most likely your crankshaft is going to need professional machine work.

I have only replaced rod and mains in an engine with out machine work (180K), under these conditions - they weren't causing any problems and the bottom end was fine. Crank looked really good and no gouges that caught my finger nail across the journal. I did it because I had the pan off for a rear main seal replacement, so I replaced bearings, timing chain, oil pump/pickup. I have a spare engine for the car, so it isn't a huge deal if it fails (which has been doing fine so far).

If you put good bearings, on a bad crank journal, be prepared to find another engine, because it will fail. Old boss did this on a 3.0L Vulcan, engine lasted 2 days at best.
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Old 12-29-2010, 02:54 PM
cowboykilroy cowboykilroy is offline
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Default Re: 4.0 sohc oil pan

Yes I understand that. but my question is more concerning why the removable bottom on the pan?
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Old 12-29-2010, 08:28 PM
98blownranger 98blownranger is offline
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Default Re: 4.0 sohc oil pan

no you need to pull the top half on the pan also
Originally Posted by redrumedge View Post
98blown you should be an MD! that's the same stuff my doc asks and ur spot on man!!!
98 4.0 2wd-----supercharger fully build heads cam...all show with go......3 time world of wheels champ 5 time national winner

lots of ranger parts for sale leftovers from my 94/96
96 sitting on the frame, waiting to go lower

custom billet parts by me intake adapters and billet steps for the step sides

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Old 01-02-2011, 10:19 PM
fairlaneguy fairlaneguy is offline
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Default Re: 4.0 sohc oil pan

Not much can be accessed through the bottom pan alone. I think they made it like this so after the asses at the oil change places screw up the drain plug, it's easier to remove and weld in a replacement plug

At least that's what I found with my sisters 4.0


Also if you need new bearings, might as well pull the motor and rebuild it.
2005 FX4 Level 2 Ranger 4.0L
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Old 05-12-2011, 03:39 PM
lowranger96 lowranger96 is offline
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Default Re: 4.0 sohc oil pan

These motors have a stud girdle built in. The bottom cover comes off to unbolt the pan from the main studs
1996 GO - 10:1 CR 4.0, P&P 98TM heads, 422 Cam, BBK 66mm TB, FMS 30-lbs Injectors -3.73 & Trac Loc - Caltrac Traction Bars - 5sp swap with hurst shifter - SN95 rear brakes, 12" sport trac front brakes
Suspension - DJM 4/5 - Rear air shocks
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