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4.0 ohv

  1. KevinSonOfDad

    4.0 O.H.V. Machining and Rebuilding Specs and links

    *articles and machine shops will be updated as people give me info of other sources and shops near them* Articles and Resources for Rebuild The Ranger Station Performance Build Article Engine Builder Mag Article on the History and Differences Between 4.0l Parts Over the Years Machine Shops...
  2. KevinSonOfDad

    4.0 OHV Spec questions

    This will go alongside my post for the 4.0 ohv machining specs. If anyone has any questions regarding specs machining or measurements of the 4.0 ohv post them here
  3. KevinSonOfDad

    4.0 OHV V6 light performance "optimization" build

    Looking for any advice on a build I'm looking to do. My rangers stock 4.0 is getting pretty worn out at almost 250k miles. I'm looking to get a junkyard engine and rebuild it in my spare time (I work a full time job as a engine machinist so i have access to the equipment) I'm mainly looking to...
  4. OBD II Wiring Diagram

    Hey All, I finally got my 2000 Ranger 4.0 OHV fixed. I broke down and took it to the shop.. Turned out to be a clogged catalytic converter. The Mechanic tried his scanner (on top of my Launch, Innova, and Actron) but couldn't get communication from the ECU (is what the scanner says). It won't...
  5. Blue_Bunny72

    3.0/4.0ohv motor mount compatibility

    Hey guys, I'm swapping my 3.0 to a 4.0 ohv in my 98 4x4. I was wondering if the 4.0 motor mounts would bolt on to the 3.0 frame or if I have to arrange for some drilling and welding. Thanks!
  6. GriffinM6

    ISO Retainer Springs & Roll Pins

    As the title says I’m in search of the rocker rail retaining clips and pins for my 93. I didn’t realize how hard it would be to find these parts so while I was dismantling my rails to replace the rockers I messed up the originals. Does anyone have a link as to where I can find/order them or any...
  7. 1985 2.8l v6 ranger swapping in a 1996 explorer 4.0l ohv

    Hey there everyone. Wanted to know if anyone would be able to tell me if they have done this swap. I have the motor installed but now I'm at the point where I need to wire everything together, of course when I took the harness and motor from my donor, I had to rush and didn't label any of the...
  8. crs.wdp

    High idle 1991 Ranger 4.0 OHV, 1200 rpm

    First time posting here but I've been reading all the posts on here as well as other sites trying to solve my high idle. I'm running out of posts to read so I figured I'd try posting it and see if anyone has any more tips. It idles at 1200/1300 rpm. Its a 1991 Ranger 4.0 OHV Auto 4x4 STX reg...
  9. Upper radiator hose sucking shut and engine temp fluctuating

    I have a 1993 ranger with the 4.0 ohv, me and my dad just did head gaskets on it, put a new thermostat in it, new water pump, new radiator cap, new heater hoses and new upper and lower radiator hoses, it’s not overheating but we’ve noticed that the upper radiator hose sucks shut and then...
  10. 1993 4.0 low idle, wavers up and down

    Alright so as the title says, my truck idles pretty low once warmed up, and it wavers up and down about 100 rpm. It's especially bad with the A/C on, sometimes it drops under 500 rpm and the truck shudders a bit. Here's a vid, vertical vid warning, my bad...
  11. C130MARINE

    heads, lifters, pushrods, shaft style rocker arms

    Hello Gents, Okay here is my situation. I have a 91 STX 4x4 with 4.0 OHV truck has sat a 1 1/2 yrs now. Parked it because lower intake was leaking. Building a nasty 347 swap. Okay well now i need this truck to be my daily for a few months. I tear her down only to find collapsed intake lifter...
  12. 1991 Ranger 4.0 stalls in gear, only when warm....

    I've been reading for probably the past week or two on everything I could pull up on google. I have tried a ton of things and done a bunch of testing and haven't been able to pinpoint the problem here, time for the description! Just picked up a 91 ranger and was told it needed a new head...
  13. 96 OHV Intermittent Chirp at Highway Speed

    Hey all, 96 OHV, 212,000 miles I've got a chirp every once in a while from behind the dash, usually when passing someone at highway speed, when the engine hits ~2200-2800 RPM. It sounds like it's coming from behind the tape deck, and I've heard it both when a tape is running and when there is...
  14. michael_cope

    88 Ranger 4.0 turbo swap update

    Hello All, 2010 since I last posted my ranger project! so here you go! Sum It up... 1988 Ranger STX 4.0L Swap from explorer, Coil on plug conversion, 5 speed, custom wiring, explorer eec, T3T4 turbo inter-cooled, 10inch 6 puck clutch, 9inch ford diff 3.73 spool, rear mounted radiator, battery...
  15. Ranger y pipe

    Has anyone tried the explorer y pipe on there ranger? I have to think it's the same. 95 4.0, its just only listed for the explorer. Last piece I need for my exhaust rebuild.
  16. 1998 XLT Cruise control

    I'm not exactly sure where I should start in diagnosing my cruise control problem. The on/off buttons illuminate when headlights are on, but set speed/coast buttons do not. When I push On, then push set speed nothing happens. I checked fuses and no problem there. Please let me know what you think!
  17. 4.0 ohv ultimate performance build lets go nuts

    im building a new engine for my 1995 ranger its not gonna be my daily driver much longer so im gonna go nuts. the 4.0 ohv is at this moment a bare block in my garage. heres what i have planned so far tom morana 4.3 stroker kit, stage 3 heads, performance cam, sts twin turbo setup on at about...

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