Automatic to Manual transmission possible?

[YotaFun]

So I am getting a little tired of my worn out auto trans in my beloved 4Runner.
That and I just checked her fluid and it's past the point of no return....
I could replace it with another junkyard trans with a little less miles but with no idea of the condtioni t was in before it saw the junkyard, all for around $300, and t-case is included.

However, I have a chance to ge a steal of a deal on a manual trans with t-case out of a 96 Tacoma with a 3.4 in it.
Miles are around the same as my truck (167k).
I know it's been done on a 2nd gen here but how about a 3rd gen?

What would be involved, obviously flex plate to flywheel, cltuch pedal, clutch master cylinder, clutch and pressure plate, and I believe engine ecu?
And I assume that driveshafts are different?

Anything else I am missing, I figure I will driver her till the trans gives and then do the swap.

Thoughts? Comments? Concerns?

Thanks in advance!

Avi

[YotaFun]

Bump, any thoughts?

[corax]

with a sawzall, grinder and welder, what can't be done?

Is the Trans Control Module separate from the Engine Control Module? Does the firewall match a Taco (for easier mounting of a pedal assembly)? Best bet might be to find someone with a 3.4 manual trans Taco and start comparing, measuring and taking pics - then off to the bone-yard with 'ya

[YotaFun]

No I would have to replace the engine ECU for a manual trans.
I was looking at my buddies manual 3rd gen and honestly looks like I would just have to get the different shifter boot for where the opening for the shifters are, trans mounts are the same.

I have a line on a manual trans and t-case out of a 96' 3.4l taco for $100 (think the guy did a Chevy 350 swap)

I am goign to pm him about his ECU, but looking around, the auto ecu's I find range from 50-200 dollars so I am figuring the same for a manual ecu.

I already got prices on the clutch master and slave cyl and they are reasonable as well as all the lines I would need to run for them.

I was thinking of doing a marlin crawler clutch and I guess finding a stock flywheel.

then I would just need to find the right pedals and start going to town.

I guess I just didn't want to go into this completely blindsided hoping someone might have done it already.

I think the most difficult part would be the wiring, would the ecu just be plug and play or would i have to switch around pins and do some splicing and butting and such.

[04 Rocko Taco]

HOPE for plug and play, but be prepared for pinning it out.

I would reccomend going with the Marlin flywheel as well truly Avy. He machines them with a .0024" lip, and trust me, it makes a difference. most stock ones fall in the .0014"-.0017" range and Toyota specs it out as to far gone to use at .0011"

[YotaFun]

oh and I did a little math for what it would be to get a performance built auto trans with a proper torque converter:

a built auto trans is $3375
a torque converter to compliment it is another $475
so $3850,
give or take a few dollars for me getting the trans there an back (the place that does it is located in Wayne, NJ) close to $4k?

I could possibly rebuild an auto trans myself:
That would be
valve body upgrade: $689
Performance Transmission Rebuild Kit w/ Raybestos Blue Plates: $658
repair manual: 32.00
thats $1379
add the $475 for the torque converter and thats $1854

[CJM]

Have you contacted level 10 or IPT trans in NJ yet? Dad had the custom work done for vette at both those places. They totally redid the man trans for I think 3k but its a vette and they had to make parts for it too.

[corax]

I think the most difficult part would be the wiring, would the ecu just be plug and play or would i have to switch around pins and do some splicing and butting and such.


In my experience many module connectors are similar - best bet would be to talk to the Toyota guys at your school and get someone to print out the full engine control diagram for both and compare pin number for pin number, also if they can print a connector pin diagram for both, you can compare that way. If the connectors are the same, but not the pinout you can just back out and move the terminals

[Obi..]

Just do it Avy! Among the best mods I have ever done, it keeps the wife from using it. :angel:

[YotaFun]

Well I think I ran into my first snag which is ecu connections.
I will post pics up later but pretty much I would need a new harness to pull this off...

[MTL_4runner]

Well I think I ran into my first snag which is ecu connections.
I will post pics up later but pretty much I would need a new harness to pull this off...


You can repin without buying a whole new harness. It will be quite a process to install that though. Best scenario would be to find a donor vehicle and get everything you need off that one truck.

[YotaFun]

The connectors are different between the two ecu's I will post pics tonight

[MTL_4runner]

The connectors are different between the two ecu's I will post pics tonight


Yes, but you can repin the other ECU's connector.
Maybe I misundertood and you meant just splicing on a new harness connector.

[YotaFun]

I am sacnning the pics now, will be up shortly.
I think if I can get the connectors, I can use my existing harness just pin everything to the right portion of the connector and but off the wires that will not be used.

Give me 5-10 min and it should be up

[YotaFun]

Here is the ECU Wiring showing both A/T and M/T trans wiring:
http://i8.photobucket.com/albums/a2/Nighthief/4Runner/Manual%20Trans%20Swap/scan0001-1.jpg
http://i8.photobucket.com/albums/a2/Nighthief/4Runner/Manual%20Trans%20Swap/scan0002.jpg
http://i8.photobucket.com/albums/a2/Nighthief/4Runner/Manual%20Trans%20Swap/scan0003.jpg
http://i8.photobucket.com/albums/a2/Nighthief/4Runner/Manual%20Trans%20Swap/scan0004.jpg

Here is the Connector view and pins for an AT Trans:
http://i8.photobucket.com/albums/a2/Nighthief/4Runner/Manual%20Trans%20Swap/scan0005.jpg
http://i8.photobucket.com/albums/a2/Nighthief/4Runner/Manual%20Trans%20Swap/scan0006.jpg
http://i8.photobucket.com/albums/a2/Nighthief/4Runner/Manual%20Trans%20Swap/scan0007.jpg
http://i8.photobucket.com/albums/a2/Nighthief/4Runner/Manual%20Trans%20Swap/scan0008.jpg

Here is the connector view and pins for a manual trans:
http://i8.photobucket.com/albums/a2/Nighthief/4Runner/Manual%20Trans%20Swap/scan0009.jpg
http://i8.photobucket.com/albums/a2/Nighthief/4Runner/Manual%20Trans%20Swap/scan0010.jpg
http://i8.photobucket.com/albums/a2/Nighthief/4Runner/Manual%20Trans%20Swap/scan0011.jpg

[Obi..]

Avy, Toyota's pre-emptive/lazy, however you wish to look at it, those connectors are pretty common (E5,6,7,8) from mid 1995-on. I have my last set still for my possible future swap or someone else's project here. I get them out of Camry's, a couple of Lexus's, and some Corolla models. If you can't get a set, let me know, and I'll take a decent offer, you'll need to pick up an E7 b/c I used it for another deal. *Makes me wonder why people play it like these connectors are hen's teeth, they must not have the Jedi skills I do? LOL..

The Auto connectors are at the top, and the manual ones are at the bottom.
http://farm5.static.flickr.com/4007/4526864302_a04bb716ba_b.jpg

[YotaFun]

if i can find a donor taco or runner in the junkyard I will pull them,
if not I will just hit up toyota and see if I can just get the connectors and then start going to town,
I don't mind switching pins around I have done it before for big diesel trucks i am sure i can get teh tools to do it for the toyota connectors.

I just need some tech info from some of you gurus, a little help seeing what wires from the auto trans to the manual trans ecu stay and where they go, I will start studying them more with in the next 9 weeks (i don't plan on doing this swap till i am going down the road and all of a sudden can't accelerate anymore ;) )

[Obi..]

In my experience, honestly, since they differ a little bit on such little things from year to year, sometimes even within the same year (pins off by like 1 or 2 spots) I have found out that the best bet is to identify and label each schematic with colored ink coding, or just download the colored versions from techinfo. Then just get 4 sheets of 8x11 white, tape them top to bottom, and on the left side write out your factory pins and on the right the new pins, then connect the spots and you have a match.

Kind of like how you had to do back in gradeschool, get it. Silly simple yes, but damn near fool proof, then just follow it up and do them. :D If you can pinout a ecu for a cummins, this is the same deal, just 3-4 times the wires.