2wd to 4wd conversion questions

The00Runner

New member
Hey I havent really posted anything on here yet but Ive gotten a lot of info from here in the past so I figured Id ask some like minded 4runner owners about my upcoming 4wd conversion to get the right advice.

Ok so i've been looking to swap my 2wd 2000 limited 3.4L for 4wd. Ive lived in florida my whole life and just moved out west in the rockies of colorado. I love my 4runner too much to trade it or sell it. It was my first car i bought when i was 17, and ive taken care of her for 8 years now. We've been through too much, so "just buying one with 4wd" isnt an option here.
Ive checked out COB's thread and some others, but im fairly new to mechanics and want to know exactly what parts i'll need to do this. Can anyone give me a parts list or any helpful information so i can finally get started tackling this project?

Thanks
 
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It all depends on the route you want to go...

Full OEM? Get a wrecked 4WD - there are a ton of little parts and wiring bits that you can't really get (easily) any other way.

You can read through my thread (linked in sig) to see generally that path.

But you can do a PreRunner adapter and go somewhat aftermarket. Or run Tacoma manual front hubs and avoid all the wiring... Or do a solid front axle... or... or...

So, we need more info to be able to answer such an open ended question.

Oh, and make sure you realize that paying somebody to do this swap will cost you about the same as buying a good 4WD 4Runner. DIY is the only way the project really makes sense.

-Charlie
 
You're new to mechanics and want to know what you need to convert from 2wd to 4wd?
If you really want to do it you'd learn a whole lot from doing the research instead of asking someone to do it for you.
 
You say you want to keep your current ride. Cool, I get that.

I'd suggest keeping it and buying a 4wd 4runner as well.
It will be easier, work better, happen quicker and maybe cheaper!
 
It all depends on the route you want to go...

Full OEM? Get a wrecked 4WD - there are a ton of little parts and wiring bits that you can't really get (easily) any other way.

You can read through my thread (linked in sig) to see generally that path.

But you can do a PreRunner adapter and go somewhat aftermarket. Or run Tacoma manual front hubs and avoid all the wiring... Or do a solid front axle... or... or...

So, we need more info to be able to answer such an open ended question.

Oh, and make sure you realize that paying somebody to do this swap will cost you about the same as buying a good 4WD 4Runner. DIY is the only way the project really makes sense.

-Charlie

Thanks Charlie, i hadn't come across your build yet, so thanks for sharing that. I've been looking near me on craigslist and found a few options for buying a salvage 97 4x4 4runner for parts for $500. I'll be giving them a call tomorow
 
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You say you want to keep your current ride. Cool, I get that.

I'd suggest keeping it and buying a 4wd 4runner as well.
It will be easier, work better, happen quicker and maybe cheaper!

I agree, I really wish I could afford to buy another one and register/insure it. Because theres a beautiful 1st gen for sale right down the street from me for 4k. I would love to have that for my romper and keep my 4runner. But i just cant afford that right now:/
 
I agree, I really wish I could afford to buy another one and register/insure it. Because theres a beautiful 1st gen for sale right down the street from me for 4k. I would love to have that for my romper and keep my 4runner. But i just cant afford that right now:/

Believe me. Atl they nostalgic feelings you have for your baby will transfer to the 4x4 if you sell yours.

You can't afford $4k but you can afford 4x4 swap? Your new to mechanics but want to jump into a major Project? Anyway you look at it your going to be spending lots of money and major downtime on you're truck. You skip the down time, labor and may save money if you just go buy a 4x4.
 
JayRolla is spot on.

I know its not the answer you want to hear but based on your limited mechanical skills and low funds, you would be way better off just selling your rig and buying a 4x4.

The amount of time, labor, money and headaches from trying to do the swap will not be worth it given your situation.

Trust me, you will quickly fall in love with your new 4x4 rig.
 
Thanks Charlie, i hadn't come across your build yet, so thanks for sharing that. I've been looking near me on craigslist and found a few options for buying a salvage 97 4x4 4runner for parts for $500. I'll be giving them a call tomorow

If you still plan on doing this, I would look for a wrecked '99 with multi-mode and Rear Locker.

I'm no expert and a could be totally off the mark here, but I think there are significant enough changes between the '96-'98 3rd gens and '99+ 3rd gens as far as electronics and wiring goes. You may want to find a doner that is closer to your 2WD's year.

Again, I could be off the mark though.. never really looked into this.
 
JayRolla is spot on.

I know its not the answer you want to hear but based on your limited mechanical skills and low funds, you would be way better off just selling your rig and buying a 4x4.

The amount of time, labor, money and headaches from trying to do the swap will not be worth it given your situation.

Trust me, you will quickly fall in love with your new 4x4 rig.

Haha no doubt, i would totally fall in love with a new 4x4 if i got one. Im just nervous selling my near perfectly maintained ride, which has absolutely nothing wrong with it atm, and buying something that I have no idea of its history. I mean i guess thats car buying, but I just dont want to shoot myself in the foot here ya know?

I've just always thought a swap would cost like 10k, and it was like the hardest job ever. But recently ive been doing research and see people doing it themselves for around 2k and making it look easy (just find the parts, nearly everything is bolt on). So i got all excited and have been looking up the parts to see if i could possibly do it. I looked around on ebay and craigslist for the basic parts like a 4x4 tranny, manual hubs, CVs, front diff, front/rear driveshaft, and it was looking more and more like this was a doable job. It seemed to me that all I was missing was someway to lift my car up to work under it, and a tranny jack. But im sure theres a lot more to it that im missing. Which is why I came here hoping to fill in some of the blanks.
 
Your current rig may have no issues now but when you attempt to make is 4wd, I can promise you, you will run into issues. I'm not saying it can't be done, but when you admit you have limited mechanical skills, that is the deal breaker in my opinion. It's not "rocket science" per say, but this is not like just changing your brakes.

In the end, "is the juice worth the squeeze"? In my opinion, no. Take your time and find an awesome 4wd rig that you can afford. Sell you 2wd in Florida where it will fetch the most money and use it towards a new 4wd rig.
 
If you sell it it won't sell for much here in Colorado. Nobody wants a 2wd runner here.
Sell it back home in FL. You'll get a lot more for it.
That being said.......... 3rd gen runners are a dime a dozen here. It's not hard to find one in good mechanical shape.
 
to answer the actual question -

- 4x4 spindles
- Front CV Axles
- Front Differential with ADD activator
- ADD activation solenoids
- Front Driveshaft
- Rear Driveshaft
- Automatic Transmission w/ Transfer case
- Console bezel for 4x4

You will also need to do some basic wiring for the ADD system

I would utilize a standard "J" shift transfer case instead of the more complicated multi-mode unit which I believe requires a PCM and other things to get to work....

I am currently swapping my 1998 4Runner from a auto 2wd to a 5-speed 4x4....
 
Believe me. Atl they nostalgic feelings you have for your baby will transfer to the 4x4 if you sell yours.

You can't afford $4k but you can afford 4x4 swap? Your new to mechanics but want to jump into a major Project? Anyway you look at it your going to be spending lots of money and major downtime on you're truck. You skip the down time, labor and may save money if you just go buy a 4x4.
Very good point here. I have multiple extra cars to drive, extra money for a project like this and have built, rebuilt and motor swapped multiple vehicles. Oh, and the help of a friend with a lift at his house, access to a welder, etc.

So, in my case, the 4WD swap was a fun project over a few weekends.

Oh, and budget somewhere between $500-1000 in maintenance parts, fluids, beer, etc. while you are in there...

-Charlie
 
to answer the actual question -

- 4x4 spindles
- Front CV Axles
- Front Differential with ADD activator
- ADD activation solenoids
- Front Driveshaft
- Rear Driveshaft
- Automatic Transmission w/ Transfer case
- Console bezel for 4x4

You will also need to do some basic wiring for the ADD system

I would utilize a standard "J" shift transfer case instead of the more complicated multi-mode unit which I believe requires a PCM and other things to get to work....

I am currently swapping my 1998 4Runner from a auto 2wd to a 5-speed 4x4....

Thanks, this was the info I was lookin for, much appreciated. You've given me hope yet again. Haha.

I'm lookin forward to hearing your end results as well.
 
one other thing to consider is the down-time on your truck while you convert it to 4x4. How long will the project take? If you hit a snag during the conversion the truck may be undriveable for awhile so plan on having a back up set of wheels to get you around...

More power to you for taking on a big project, the best way to learn how to do a major project is to do a major project.
 
All the same stuff people told me. Do it if you want to do it. They're just not as bold as us.

I wrote this in Feb 2012 after my conversion, just a little insight to why I found it to be worth doing.





"You're wasting your time, just sell it and buy another."

I've heard that all too much. But there's one thing KBB can't put a price on. A salvaged vehicle? Alright, maybe two things. While I'm well aware of my 4Runner's private party and trade in values... I wouldn't let it go for three times that much. That's the thing: there is no option for sentimental value.

Just my luck when I walk outside and see my pride sitting there, covered in dirt. They're right, though, I did buy the wrong one. This was the same truck that titled me first winner of the Castrol Edge: Unlock Your Performance contest.

But, am I about to sell my perfectly good 4Runner? After all it's been through? Well, after 3 years of forums, modding, and drooling over awesome builds, it was time to say goodbye to my 2WD Automatic 4Runner.

This would not be an easy task, not emotionally or physically. What kind of a person would I be? My 4Runner never let me down, not even when I decided to jump it on worn stock suspension or when I thought it'd be a good idea to drive through a stream past the hydrolocked Ford Ranger that hadn't been so lucky. 200,000 miles meant nothing to this thing. It would kill me to look at a different VIN and try to call it my own. And yes, I do know my 4Runner's VIN by heart.

The answer was simple: it couldn't be done. The pathetic amount of money I would receive from selling it, regardless of all the work I had put into it, would bring me right back to when I was 16 and looking for a cheap used car.

Somewhere, in the deep faint past of forum threads where posters stopped going online ages ago, there was a glimmer of hope. I had seen it done before... the elusive 2WD to 4WD conversion. Ah, but information was scarce. Every thread I ever posted about the subject would end badly. Easy enough for everyone on the forums to tell me to sell it; they already had 4WD. To make matters worse, I had a four-banger, and everyone else had V6's. This meant that I'd have to be the first for this project, at least, online.

I remember reading the comments on my Castrol Edge video. I don't know what came over me, but during the shoot, I told Matt Farah that I could go anywhere the 4WD guys go with my 2WD. Obviously, not true, and the comments everyone posted really made sure I wouldn't forget that.

Well, $2,450 and a tow truck later, I was about to slap everyone who doubted me in the face. I wanted to show them all that I could do it. I wanted my 4Runner to do what I told the camera it could do.

I bought a wrecked 4Runner, a 2000 4x4 5-speed. I could use the parts I needed and part the rest of the truck out. I was in full motion now, there was nothing going to stop me. A buddy of mine owns Japanese Car Specialties, a local shop. He was fine with lending me his lifts. I drove both 4Runners down there and went to work.

Three solid weeks, many cuts, curse words, and sleepless nights went by, and now I've got my dream 4Runner. Finally, no more glorified station wagon. Now it's aching for all the 4WD-oriented mods that it could never have before.

Check out the full conversion, loaded with pictures: http://www.toyota-4runner.org/3rd-gen-t4rs/61636-cobs-4runner-timeline-pic-heavy-41.html#post908338

I am angry at myself for even thinking of selling it. This thing was born to be mine and only mine, and I would have let it down by selling it to some idiot who wouldn't maintain it correctly (have you realized that I'm obsessed yet?).

I just wanted to share my story, and you should share yours in the comments below: ever embarked on a difficult, barely-feasible build on a car that by all outsiders' accounts wasn't "worth it"?

Thank you for reading.
 

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