FIRST TIME TOY OWNER's 3.4 SWAP THREAD

[syber_kowboy]

Originally Posted by RaginYota how different is the 4runner EWD compared to a pick-up?? I understand that the runner will hav rear wiper..ect..ect...?? I think as far as the body harness go they are the same. I'm not positive but I'm pretty sure. The interior wiring is different because of the rear window, the wiper, the speakers, etc but I'm pretty sure the engine and body plugs are the same from truck to truck. Actually I'm 99% positive because I used body plugs from a 90 auto pickup in my swap and they were exactly the same except it wasn't 4wd.

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[MotoXJunky]

http://www.chaosfab.com/92300.html

Thats the suspension im putting on the front.

http://www.off-roadweb.com/features/...4x4/index.html

this is my ideal rear suspesion... i wanna keep my rear intact cuz i want to make it available for a blow-up mattress so i can camp

any opinions?

[RobD]

None of that matters.

All you're doing is wiring up the engine computer. Wipers, etc, are not controlled by the ECU. You're looking at wiring up things like the speed sensor and power. Nothing else.

My engine/ECU came from a 97 Tacoma. No problems with the 91 4Runner.

[A New High]

Does it matter if the 3.4 is out of a 2wd or 4wd? Also I heard the 99 and up have bigger injectors and the MAF is changed? And the engine ECU is totally separate from the tranny controller, so I can use a 3.4(that had an auto behind it) in front of my R150F without any wiring problems, right?

Sorry, /hyjack

[MotoXJunky]

I spent half the day trying to get my hub and rotor off and was unsuccessful (ok not half the day but a good part of my evening). im trying to take out my front diff i must be retarded or something

[syber_kowboy]

Originally Posted by A New High

Does it matter if the 3.4 is out of a 2wd or 4wd? Also I heard the 99 and up have bigger injectors and the MAF is changed? And the engine ECU is totally separate from the tranny controller, so I can use a 3.4(that had an auto behind it) in front of my R150F without any wiring problems, right?

Sorry, /hyjack

You really want to get a 4WD ECM and harness. I think the MAF came in 2000 but I don't know about a separate tranny controller. I think you can use an auto ECM and harness with a manual by tricking it into thinking it's in neutral the whole time but someone wrote something about that causing mapping issues or some such thing. Sorry there are some many "I think" "something" "someone"s, but all the specifics seem to blend together these days.

[MotoXJunky]

Rob or Kowboy.. i found a 3.4l 4runner engine with ecu and uncut wireharness with all the accessories. it was from an auto for around 1.5K should i jump on it? If it DOESNT have an ecu will it be easy to get one i need?

[scuba]

Its safe to get the ecu with the same motor from the donor to not f things up...if you cant find one for same year/tranny, you might be down a while looking for said ecu...
But 1500...how many miles...?

[RobD]

Originally Posted by MotoXJunky

Rob or Kowboy.. i found a 3.4l 4runner engine with ecu and uncut wireharness with all the accessories. it was from an auto for around 1.5K should i jump on it? If it DOESNT have an ecu will it be easy to get one i need?

If you find the complete engine with ECU and uncut harness, yes, jump on it. Or, better yet, just buy it. That won't be as painful as when you land on the engine.

[scuba]

[mastacox]

Originally Posted by A New High

Also I heard the 99 and up have bigger injectors and the MAF is changed?

Just thought I'd jump in and say that the 99-up injectors are not bigger, their design is just a little bit different and they are just a plastic body. pre-99 injectors and post-99 injectors are completely interchangeable AFAIK. Hard to say if they're better or worse (the plastic bodies can crack if clamped incorrectly), but their flow ratings are basically the same.

Not sure about MAF, but they did start using throttle by wire in 2001 I think, which could change things in the swap.

[syber_kowboy]

1500 for a 3.4 with low miles is a pretty good deal but like scuba said, If you don't get the correct ECU with the purchase you'll be searching quite a bit. An auto ECU will go for at least $100. You also have to consider the tranny. I spent about $2k for a motor, tranny, accessories, crossmember, and all the little bits and pieces I needed. You might be able to find a better deal. Just FYI

[MotoXJunky]

thanks. it has 52,XXX miles on it I emailed dude about the ECU so we'll see what he says

[mt_goat]

Originally Posted by mastacox

Not sure about MAF, but they did start using throttle by wire in 2001 I think, which could change things in the swap.

No throttle by wire on my 2001, I think it was after 2002, like 03 or mid 02.

[MotoXJunky]

you guys know anybody that has attempted a 4.7l swap?

[scuba]

4.7 like outta a toy v8..?
idk.
But I know of a member that put a lexus 1uzfe in his second gen runner...

[MotoXJunky]

yeah the new toy V8 yeah i heard of the 1uz swap seems to complicated

[syber_kowboy]

I think the 4.7 is a little big for the engine compartment. The lexus engine fit but he had to lift the truck quite a bit and it still was really tight. I'd stick with the 3.4 man it's got tons of power and really easy to do.

[MotoXJunky]

so i talked to the dude and he has a 4x2 5vzfe ecu to come with the engine and all the accessories. im ripping out my front driveline so the 4x2 ecu will work good with that, but since its from a different vehicle and engine will it still hook up fine?

[syber_kowboy]

Originally Posted by MotoXJunky

so i talked to the dude and he has a 4x2 5vzfe ecu to come with the engine and all the accessories. im ripping out my front driveline so the 4x2 ecu will work good with that, but since its from a different vehicle and engine will it still hook up fine?

It depends on if the ECU is compatible with the harness and motor. You don't "have" to rip the front end out. Just leave it. But why do the swap if you aren't going to have 4wd? I have a 4x2 auto T100 ECU that'd I'd sell you cheap but if you are using a manual tranny I'd suggest you find a manual ECU. I think they made some changes to the throttle body in mid year 96 so if the motor is older then that and the ecu or harness is newer you are going to have issues.

[MotoXJunky]

I want to swap so i get more power and an available supercharger. Im not a mudder, crawler type of guy. i am a prerunner/desert type of guy and 4x4 isnt my things hence y i am taking out the front driveline and transfer case. My truck is also auto and imma keep it that way. i plan on buying either a Art carr or winters shifter for it as well.

[MotoXJunky]

So I got home from san diego for xmas vacation couple days ago.. and my house was robbed. NO JOKE. I came home to an empty house.... well they did leave most of my clothes. The local P.D. came and took fingerprints and the such so hopefully they will find the s. All my tools in the garage are gone, they even tried to take my engine hoist. They didnt find my pink slips tho (guess i hid them too well). n e ways, seems like my project is going to be on hold for a couple months while i replace all my and take care of all this. sorry guys, i will post when i have some new info