need help on Conversion of MR2 tranny Options

[team_omega]

So does anyone know how to convert the MR2 tranny to FWD? I seen posts that they'll write it up and post it but haven't seen anything. I need to know how you guys/gals did your mr2 tranny.

SORRY posted in wrong area.....just noticed it...

This post has been edited by team_omega: Sep 7, 2006 - 12:45 AM

[azian_advanced]

i thought it should just fit right in a FWD car...

[WannabeGT4]

Copied and pasted from here:
http://www.geocities.com/zegoat2000/e1531.html

E-153 Transmission Conversion
This is the alltrac gearbox.

If you look at the pic this is what u have to do:

-remove the green thing which is the bracket for the gear shifter cables from the alltrac tranny and put it onto the mr2 one.
-unbolt the bolts in the red and yellow square and remove the entire yellow/red/purple sections on the alltrac tranny. When u remove the red bit the shift linkage comes out of the gb. For it to come out you need to remove the bolts in the pink box.

-u need to remove the red bit in the mr2 tranny but this has nothing coming out of it. The shifter stuff comes out of the opposite end. To get this out u need to cut of the shifter stuff and then u can pull it out. Replace this all with the alltrac stuff and cover the whole at the opposite side where the alltrac linkage came out of (use a coin or something).

- u need to make holes for the bolts in the yellow square to go into. The space is there, just
make a hole and tread it.


Here's another explanation.....
I just did the conversion ur talking about today. This is how u do it:

You cut the MR2 selector shaft with a hacksaw or grinder just infront of where it coems out of the gearbox, only way to pull it out. Then you undo both top plugs, filler and vent, and undo the front selector cover. then pull the MR2 selector shaft out. Use the GT4/Celica selector cover and push the shaft in, and bolt it up. You will need to use a clearance drill and tap on the castings on the top of the box to bolt the selectors down casue its not drilled, thats quite simple, just dont go too deep. Then tap it, i think its M10x1.25. Just get a tap same as the bolt out of the FWD box that holds the selector arm to the casing.

Make a welsh plug for the front of the selector housing where the mr2 shaft came out of and glue it in.

Presto! Your done. Can do it in an hour or 2.


As for the axles.....
After searching everywhere on the internet and asking alot of people questions of which axles to use with the 3sgte swap with a E-153 MR2 turbo/Solara tranny...I was finally able to get the right information and this is how you do it:
1)Look on Car-part.com or at junk yards for these parts:
a)1991-95 MR2 turbo intermediate axle w/ carrier bearing or purchase the entire passenger side axle if you want to be sure to get all the parts and driver side axle(you will need the inner shaft which inserts into the transmission)
b)1990-93 All-trac front axles for driver and passenger sides( they are actually identical in everyway)...make sure you find out if your car has ABS and order the axles pertaining to your car if it equipped with ABS or not. I am not sure if there is a difference but it would be a waste of time and money if it was.
2)The driver side all-trac axle was simple. There are 6 allen wrench bolts which hold together the inner shaft to the axle shaft on the MR2 turbo driver side axle. Place the piece with those 6 bolts into a big vice and get a allen wrench and a long pipe to get some leverage on those bolts.
3)After you have taken out all the 6 bolts, loosen the vice and seperate the two pieces. You should now have the MR2 turbo driver side axle in 2 pieces.
4)Place the Driver side MR2 turbo axle (HUB end) on the side and place the all-trac axle (HUB end) lining up the 6 bolts onto the MR2 turbo inner shaft end. Torque down those bolts.
5)At this point you should have the hub disconnected from the steering and the strut. Place the inner shaft into the transmission and shake it and turn it until you feel it pop into place. Then lift the hub and insert the shaft into the hub. BTW...All-tracs,GTs,and GT-S' all have the same hubs so the all-trac axle should fit perfectly with no problem. Torque everything down.
6)Now for the passenger side which is a little bit more work but basically the same idea as in instructions #2-#4. You dont need to do any work to the intermediate/center shaft. You will see the same 6 allen wrench bolts and you will swap the MR2 turbo outer with the all-trac outer.
7)Installing the passenger side is easier if you have someone help you hold the outside end while you push,turn and wiggle the shaft into the transmission.
8)when you feel the shaft pop into place line up the carrier bearing to the engine block and place 2 bolts. (It is obvious where you will see the holes line up for the bolts)
9)Make sure you install the support bar that bolts to the carrier bearing and the engine block for added support.You may have to pick up that stay/support bar seperately from the dealer or if you are lucky it will come with the MR2 turbo axles.
10)Same thing before with reassembling the hub end and voila! You have a working axle setup with a MR2 turbo/Solara tranny.


E153 Transmission Conversion Cont.....
Well I picked up a 1999 E-153 Solara transmission which already has the linkage on the correct side for FWD. If you wanted to convert the MR2 turbo tranny you would:
1) have to pick up a shifter actuator from a E-153 solara.
2) Then take out the MR2 turbo shifter acutator by unbolting the 4 bolts near the linkage and 1 really big bolt on top of the actuator.
3) Install the solara shifter actuator from the opposite end and weld a quarter in the hole that is gonna be left where the shifter linkage use to be (like Dirty explained earlier).

Some MR2 turbo owners actually pick up a newer E-153 trans from a solara (because of its nice syncros and lower mileage) and do the same thing but they are converting from FWD to RWD shifter linkage setup...so its interchangeable between the two transmissions. The only reason why I went with the solara transmission is because it is newer and has less miles on it.
Sean S...Do you want me to rewrite that axle setup again so that it is easier to understand?


Go onto car-part.com and search for a E-153 tranny either from a MR2 turbo or a V6 camry...I would go for the MR2 turbo tranny and make sure you get the correct tranny that has the electric speed sensor on it and not the cable driven speedometer hook-up...looking at your car you have the electrical speed sensor since it is a 6th gen.

Mounting this tranny is basically like mounting the all-trac tranny...you will need to either modify your existing crossmember or use the all-trac crossmember. Also the rear mount bracket that bolts to the rear of the tranny is an all-trac rear mount bracket.

If you need help with how to do the axles...do a search on either the forced induction or the 5th gen forum...topic: E-153 axle set-up. Like ST184_turbo said...use the inners(including the intermediate shaft and carrier bearing) of the mr2 turbo and the all-trac outers and the all-trac shares the same hubs as the GT/GT-S.

Oh and the shifter cables have to be modified too if you are going to be using your original S53 cables. I would say that you pick up the all-trac cables too and when you decied to change your tranny...pull out the S53 cables while the motor/tranny is out and install the all-trac ones.
I used the all-trac cables from a 4th gen and I still had to modify one of the cables nearest to the driver...the cable was about 5/8" too short right near the shifter assembly lever and needed to be extended. I am not sure about the 5th gen all-trac cables...since I have a 5th gen I was thinking that maybe the difference in length had to do with the differences in generations...they possibly could have worked without extending the cable.
So your list should look something like this:
1)E-153 tranny(MR2 turbo(which you will need to convert) or camry V6)
2)All-trac: Mounting brackets rear and front,crossmember,outer axles for both sides, and shifter cables(which you might have to modify a little unless you get the all-trac shifter assembly..I reused the original shifter assembly in my 1990 GT-S)
3)MR2 turbo clutch set-up, pressure plate and disc( just tell that to whomever you order the clutch from...trying to explain that you are using the V6 camry tranny with a 3sgte might confuse them)
4)MR2 turbo inner axles (I just ordered the whole axle set for both sides to make sure i got everything that i needed)
Good luck and hope this clears this up for you!

[team_omega]

yeah i found that too. but some people here say that that write-up is not the whole thing or is a bad write-up...