jmswltn

Today i disassembled the tails from the 340h (for practice) and 340f

here is what i found

This is the 340f from an 88 22re 4runner



This is the 340h from a 91 3vz 4runner



what i found is the shafts are in fact the same spline just different lengths

also i took the drive flanges from the 340h and slipped them on the output of the 340f it was a perfect fit.

seeing this i am lead to believe you could take one of these and replace the lexus 3 bolt flange then be able to use a 4 bolt shaft from the trucks. this would be obviously 2wd but maybe a much more affordable option.

both of these trans incorporated a 2 sided rotor of sorts for a speed sensor (i believe) i was thinking the pickup in the transfer adapter could be used to output a speed signal for the lexus cluster

more to come..

jmswltn

as i had expected the 4 bolt flange slipped right on



so if you were looking for a cheaper 2wd option for the uz there you go

here is the shaft from the 341e



this is a view of the pickup rotor through the 340f transfer adapter



initially i was going to bore this hole out to fit the lexus sensor


341e sensor


340f

but after cutting down the shaft to fit the transfer i could no longer use the rotor assembly.

i am going to attempt to use the drive shaft nuts for my rotor signal

serg4x4

it is all result in 10 days?

jmswltn

I dismantled the transmissions on july 10

i dismantled the lexus starting july 11






i scrapped the rest of what i wasnt going to possibly use or sell yesterday july 16

so about a week so far... but it is a yota so really the project is never done.

i have to do everything my self as i dont have access to a fabrication shop or a big budget

the motor looks gigantic with all the wiring crap on it

toyminator2000

Just be thankful that you don't have to do it in a small two car garage.

jmswltn

i practically am there is so much stuff in that little building. my borrowed space is only about 16x25..
but either way i am still thankful i have any place to do this at all.

I am now looking into what to do with that mess of wires left over. i have the entire "front cut" of wire harness to sort thru.

what gets me is 3 out of 4 plugs for the ecu went to the engine harness. the other runs into body harness but from looking at the pin out all 4 go to the engine and trans. thats just stupid, it just makes the whole thing more difficult

yota864x4

ive always wanted to see someone do a chevy transmisson behind the 1uz... id like to run a nv4500 behind mine

jmswltn

this company offers a clutch and flywheel kit for $400 nissan trans but still a good resource

http://collinsadapters.com/index.php...tch-combo.html

CaptainjMorgan

I'm trying to decide if I'm crazy .... The internals of the A340h are very close to the Lexus transmission internals...... So wouldn't it be possible to wire in the a340H to the Lexus harness and make everyone happy... ? I say this because I am attempting this right now .... And wanted to verify before I got to far and to crazy that it was possible? Anyone tried this?

CaptainjMorgan

I know the 5 speed is much easier .... But when your paralyzed its a bit difficult to try and do five things with your hands at once

jmswltn

I would say it won't work the insides (valve body) is much different



340h left Lexus 341 right

I am going Lexus 341 to 340f case using the drive shaft bolts for the rotor sensor and maybe an electric Speedo for speed sensor #1 if needed but would like to keep the cable Speedo if possible

serg4x4

jmswltn

Serg What On The 341 Needs Drilled And Tapped?

CaptainjMorgan

Thanks Serg! So I've been reading for the last 4 hours trying to make sense of the different options.....
There are a lot more than I thought...

CaptainjMorgan

So what I found...

A340h married transfer case 89-95 4Runner.
It is possible to use this set up. Not sure if the TC will bolt up to the 1uz flywheel ( going to check in morning). It is possible to divorce them with an adaptor 550$

A340e/341e A340e SC 400 92-99/ A341e 90-94 LS 400.
It is possible to use this set up. You have to modify the tail shaft and case. There is an adaptor for this it is 699$. The transfer case will needed in addition to adaptor 100-500$ from salvage.

A340f 95-03 4Runner, 95-03 Tacoma, 00-04 Tundra, 85-98 pickup,1996-98 T-100.
It is possible to use this set up. I'm going to pick on the Tundra. It bolts to the 1uz. Transfer case drop is on the drivers side. 400-1500$ from salvage

T-100 is a good option because it used the passenger side drop transfer case for those who are going to use IFS. 200-600$ from salvage

So these transmissions are from the "A34" family and are similar in there electronics and internal parts. There are a few differences but nothing that can't be rearranged or moded slightly for use.

serg4x4

jmswltn

I assume you just have the motor without trans, if this is the case you should probably go with the tundra. As you can see in my picture the bell housings are different distance from the trans. Even if the 340h tc would bolt up to the uz flywheel it wouldn't be in the right position to seat up to the oil pump.

If you don't have the accessories harnesses transmission and ecu it might be a good idea to get a parts car

CaptainjMorgan

When I bought the engine I had the option I chose not to buy it with trans I was trying to save a little $ but it was a bad idea... I was misinformed. I have the complete wire harness and ecu for the 1uz and everything from the runner. I bought a bellhousing for the 1uz and was told it will bolt to any of the "A34's"

I think the route I will go is the T-100, it's going to stay IFS for another year till I decide what to use for axles (d60s, rockwells, or chromoly something)and gather parts (the engine swap is way over time and money budget). That way it won't matter what side the dif is on because I can easily use an adaptor and change it if needed. I've been taking pics will post when trans issue is taken care of...

jmswltn

I myself picked up a sc motor thinking it was a good start till I figured out how stripped it was of several crucial items and had the wrong pan for ifs. This led me to buying a parts car to basically get everything I needed for free after scrapping and selling it off, short of the needed maintenance items and the 340f to scavenge parts from.

At least you have a bell housing.. I'm pretty sure you need the torque converter and oil pump/input section of the trans to swap with whatever 340 you plan on using. Cebby covered it in his build. I'm pretty sure he was intending on using the h trans but changed directions.

serg4x4

Yes