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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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  #1  
Old 09-02-2009
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4.0L ohv to 4.0L sohc

Alright I have been planning this for a little while now lol and now finally it has come to be. I had a 98 ohv with 167,000 on it, it lived up to its reputation as expected. It ran great, and had great down low torque and all it needed was a lifters and a rear main seal. The lifters tapped and it leaked a decent amount of oil, didnt burn any oil and got decent gas mileage.

I had followed this motor in a junkyard in North Dokota to see if anyone bought it for a year and a half and I got lucky because no-one did. So I saved up enough money to buy it and I bought a 03 4.0L sohc along with the transmission and t-case along with a front and rear drive shafts (all with 1700 miles). We as in my dad and I, got all the engine wiring and computer along with the key because of the pats system. Also we put in a new steering rack as it was making some noise. We have already started to do the motor swap and have gotten to the point of wiring it in. When we put the motor in we kept it bolted to the transmission and put it in as a whole unit. I have taken a couple of pictures of this to post up for you guys because I know you guys love pictures of things. :)

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This is the old motor and transmission.

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This is the new motor and transmission.

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This is when the motor was out and there was just simply nothing in there. lol

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That is the new steering rack that we put in.

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And ofcourse we gotta have a picture of the faithful engine hoist.
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  #2  
Old 09-02-2009
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HAHA...I've got the same hoist except it's orange. lol.




Did you grab the PCM from that truck? I don't think that OHV Y-pipe will work with a SOHC. I'd look at eliminating PATS.
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Old 09-02-2009
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Nice work so far man. Good luck!
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Old 09-02-2009
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im hoping the y pipe works, when i took it off b/c the unit lol wouldnt go in i broke one bolt in two and had to use a nut crusher to remove another one, remarkably the other one came out easily.
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Old 09-02-2009
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awsome! its nice to see youre actually doing it. good luck with the swap!
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Old 09-02-2009
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Quote:
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HAHA...I've got the same hoist except it's orange. lol.
hey me too but mine was free
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Old 09-02-2009
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Good work man....keep us updated!!! We want PICS!!! lol.
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Old 09-02-2009
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Hey when u done with yours you wanna do mine lol
but really i can't wait until this is done.
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Old 09-02-2009
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me too lol im gonna take a video of it running and the great thing is the motor should sound the same
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Old 09-03-2009
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Not too jack your thread. But what is actually required to do the swap?
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Old 09-03-2009
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looks like fun but i must ask why a sohc motor?? you must want top end torque to want that motor. good luck with the swap tho im not a big fan of sohc motors
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Old 09-03-2009
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I just want more hp and I dont have the time or the money to have my ohv built, so just put in a motor and gain 50hp and 10ftlbs plus the little aftermarket things im gonna do to it also. Plus all of this stuff is brand new.
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Old 09-03-2009
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Just remember - SOHC is nice - but they bog down in the low RPM's.. I dont mind myself, since I absolutely love popping it up to 4k+ all the time getting up to speed on the roads.. but I've heard good things about OHV's concerning the low end power
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Old 09-03-2009
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Quote:
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Just remember - SOHC is nice - but they bog down in the low RPM's.. I dont mind myself, since I absolutely love popping it up to 4k+ all the time getting up to speed on the roads.. but I've heard good things about OHV's concerning the low end power
youre right about the ohv having better low end, but i would NEVER trade my SOHC for the OHV ever! ive had both and the SOHC is so much more powerful. this is a cool swap i think
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Old 09-03-2009
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How much did it cost if you don't mind my asking?
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Old 09-03-2009
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What year is the engine? Depending on the year I would fix the timing chain tensioner issue before putting it into the truck.
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Old 09-03-2009
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Quote:
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What year is the engine? Depending on the year I would fix the timing chain tensioner issue before putting it into the truck.
X2 thats a good point
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Old 09-03-2009
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It's got 1700 miles... lol. My '06 had 1,000 when I dropped it in.

Anyway...his engine appears to be an '03 because of the lack of an EGR system.
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Old 09-03-2009
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03 huh? I'd take care of the issue before it happens then.
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Old 09-03-2009
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Yeah I know of that problem and the motor is already in and I dont really plan on pulling it out again, but anyway I bolted up the t-case and I tried to bolt up the old rear driveshaft to the new t-case and on the bolt up for the driveshaft to connect to it the t-case are spread out farther than on the old t-case. Does anyone know why ford did this lol? The entire drivetrain is pretty much the same on all rangers, why this small and subtle change on the t-case? It doesnt make any sense!!

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The bolt holes on the yoke(i think its called) to the t-case are spread farther out then on the older one.

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The engine sitting in the truck.

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And as you can see the new 03 front driveshaft bolts right in with no worries.
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  #21  
Old 09-03-2009
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all this is costing me $3,000 which is a small price to pay to keep it running alot longer
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Old 09-03-2009
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3k seems really high. Couldn't you of done a v8 swap for that? I'd think you could of bought a junked out v8 exploder for $500-1000, freshened everything up and had it in your truck for another $2k.
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Old 09-03-2009
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did the old engine run? wanna sell it?

good job, hope everything works out.. I want to say I saw something on here about the flange on the back of the t-case, i forget what the years are.
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  #24  
Old 09-04-2009
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yeah the old motor was great the lifters tapped and it needed a rear main seal but other than that burned no oil and had no other problems
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Old 09-04-2009
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meh, mine tap.. done it for years.

did u have an auto or manual?
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