Bob's swap project: Level II meets 5.0L
Originally Posted by rwenzing
What was I thinking?
Just to point out, between my GF and I we now own 3 products w/ Mazda transmissions..

At least one of us is finally getting things right!
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Thanks, Mark. Something like that is definitely in the 4R70W's future. I've also heard good things about Baumann kits and upgrades:
http://www.becontrols.com/products/products.htm
http://www.becontrols.com/products/products.htm
Originally Posted by Rangerless
Might be a dumb question What about the emissions a 99 in an 2003. Will it pass. or do you not have to worry about that.
the downside to it, theres POS cars everywhere.
Originally Posted by Rangerless
Might be a dumb question What about the emissions a 99 in an 2003. Will it pass. or do you not have to worry about that.
Fan clutch:
The fan and fan clutch on my used engine were damaged during what wrecking yards jokingly refer to as "handling". A replacement for the special, unique "short" clutch for the 5.0L Ex is about $150 and doesn't include the fan. So, I ordered a used "5.0L" fan and clutch from a guy I've done business with before. However, by the time it arrived, my $30 bargain had morphed into a 4.0 Explorer assembly - argh.
The 5.0L Explorer uses a whole array of special parts on the front of the engine to shorten it up for the cramped Explorer engine bay (virtually identical to a 98+ torsion bar Ranger). The stock 4.0 SOHC Ranger fan/clutch assembly is about 1/2" longer than the 5.0L Ex. I found that there was 0.265" extra room inside the Ranger nut so I shortened it by 0.250". That mod leaves it only 1/4" longer than the 5.0 part and I think I can work around that.

Oil cooler:
I got an engine oil cooler from a 96 5.0 Ex and mounted it on the 99 engine. All I had to mount the right angle adapter was the 99 center bolt but it had to be shortened about 1/8" to fit. No problem. This is the oil-to-coolant type of cooler that is commonly found on police vehicles, hipo models and some trucks.

Transmission mount:
The stock 5.0 Explorer tranny mount is a very wimpy piece. The one that came mounted on my used transmission was already thoroughly fragged. The F150 T-case I'm using is way heavier than the Ex AWD unit so it was a no-brainer to predict that the trans mount will live an even harder life. I considered buying a "Lifetime Warranty" OE style Explorer mount from AutoZone and just replacing it annually but decided that wasn't the way I wanted to go.
So, I dug around in my collection of semi-useless stuff and found two identical, nearly new 1992 F150 4x4 tranny mounts. The bolt pattern matched the 4R70W but there was an interference between the mount and two of the extension housing bolt heads. That was easy enough to fix by countersinking and substituting flat head bolts. Now I have a legitimate 4x4 trans/t-case mount ... and a spare!
The beefier mount on the right is the one from the 92 F150. The crossmember was cut and modified to keep the trans at the stock angle while using the taller mount:
The fan and fan clutch on my used engine were damaged during what wrecking yards jokingly refer to as "handling". A replacement for the special, unique "short" clutch for the 5.0L Ex is about $150 and doesn't include the fan. So, I ordered a used "5.0L" fan and clutch from a guy I've done business with before. However, by the time it arrived, my $30 bargain had morphed into a 4.0 Explorer assembly - argh.
The 5.0L Explorer uses a whole array of special parts on the front of the engine to shorten it up for the cramped Explorer engine bay (virtually identical to a 98+ torsion bar Ranger). The stock 4.0 SOHC Ranger fan/clutch assembly is about 1/2" longer than the 5.0L Ex. I found that there was 0.265" extra room inside the Ranger nut so I shortened it by 0.250". That mod leaves it only 1/4" longer than the 5.0 part and I think I can work around that.

Oil cooler:
I got an engine oil cooler from a 96 5.0 Ex and mounted it on the 99 engine. All I had to mount the right angle adapter was the 99 center bolt but it had to be shortened about 1/8" to fit. No problem. This is the oil-to-coolant type of cooler that is commonly found on police vehicles, hipo models and some trucks.

Transmission mount:
The stock 5.0 Explorer tranny mount is a very wimpy piece. The one that came mounted on my used transmission was already thoroughly fragged. The F150 T-case I'm using is way heavier than the Ex AWD unit so it was a no-brainer to predict that the trans mount will live an even harder life. I considered buying a "Lifetime Warranty" OE style Explorer mount from AutoZone and just replacing it annually but decided that wasn't the way I wanted to go.
So, I dug around in my collection of semi-useless stuff and found two identical, nearly new 1992 F150 4x4 tranny mounts. The bolt pattern matched the 4R70W but there was an interference between the mount and two of the extension housing bolt heads. That was easy enough to fix by countersinking and substituting flat head bolts. Now I have a legitimate 4x4 trans/t-case mount ... and a spare!
The beefier mount on the right is the one from the 92 F150. The crossmember was cut and modified to keep the trans at the stock angle while using the taller mount:
Last edited by V8 Level II; Dec 22, 2007 at 03:27 PM.
Originally Posted by redranger4.0
Does michigan have a law like CT where the donor engine has to be from the same year vehicle or newer?
Originally Posted by Gearhead61
Why don't you just run an electric fan Bob?
Originally Posted by rwenzing
we do not have an annual safety inspection or a state I/M emissions program. Basically, nobody official ever bothers to check what's under the hood.
I can't wait to see the finished product as the progress pics just build more anticipation. Another job that'll look OE?
Originally Posted by Lord Of War
Will a 5.0 fit the stock 4.0 transmission.
So your going from a 5spd-auto? how come you didn't go with a another manual?
Originally Posted by rwenzing
The 4R70W transmission and the 5.0 engine require the Explorer PCM. A 6 cylinder/manual Ranger computer could not even be reflashed to run the Ex calibration.
The overall wiring is not bad. Besides some minor pinning differences, there are just a couple of funnies with the speed sensor and the A/C WOT cutout. At least, that's all I know about going into the project....
I would have preferred a manual but there are not many possibilities that will work easily with a late model Ranger 4x4 swap. Each of those manuals has a problem or two, so I decided to use the auto instead. The Explorer 4R70W is a decent trans, it bolts direct to the 5.0L engine and the F150 t-case and it works perfectly with the stock Ex 5.0L calibration.
The overall wiring is not bad. Besides some minor pinning differences, there are just a couple of funnies with the speed sensor and the A/C WOT cutout. At least, that's all I know about going into the project....
I would have preferred a manual but there are not many possibilities that will work easily with a late model Ranger 4x4 swap. Each of those manuals has a problem or two, so I decided to use the auto instead. The Explorer 4R70W is a decent trans, it bolts direct to the 5.0L engine and the F150 t-case and it works perfectly with the stock Ex 5.0L calibration.
Originally Posted by 01xltranger4x4
Bob, is the rear driveshaft behind your current 4.0/manual combo going to work with the new 5.0/auto configuration?
Originally Posted by 01xltranger4x4
Interesting, are you going to have a custom one made or is there a DS out there that you think will work?
I'm hoping that there is a 2WD regular cab Ranger (or other) shaft that is close to 48" eye-to-eye. Preliminary measurements say that is about what is needed. I'll know exactly what I need when the transmission and t-case are in position.
If I can't find one that bolts up, I'll have a Ranger or Explorer shaft shortened. 96~2001 4.0L 2WD Explorer 4-door automatics are 50".





