Automatic gearbox controller

[poida]

Madmount does that mean I could buy an auto surf with a 340 and just bolt the 1uz up to it using the 1uz housing. Does the 340 in the surf have the extra clutches that the 340 for the 1UZ has?

 

[madmont]

The a340 in the surf has less clutches than the 1uz version and being an almost identical case will bolt up to the bell housing. The a341 transmission has a taller first gear than the a340 and I would expect the torque convertors to be different stall speeds between the various motors

 

[poida]

So it looks like the best idea is the a341 onto the transfer. I'm assuming by what I have read that the output shaft has to be changed/shortened on the a341 is it alright to just cut the shaft short as opposed to changing it? Then I also have to adapt the speed sensors? Or if I cut the shaft on the a341 will they then still fit on it?

 

[Zuffen]

Poida,

Dissmantle both boxes and swap the output shafts.

I have an address on someone doing this with a Soarer box (same box different car) at work. I;ll try to remeber to post it tomorrow. It's a job you can do yourself if your adventurous.

 

[poida]

I am adventurous but that can sometimes land me in trouble. Anyway it sounds like the only way to go. I'm still having fun understanding the speed sensors. i.e wich ones are on the surf auto and which ones are on the soarer and what needs to be put where. I can make signal convertors out of pic micros if needs be. e.g. Converting a 1 prong signal to a 4 prong signal. I'm re-reading the "verifying auto trans types and uses" post to work it out.

 

[Zuffen]

If you swap the output shaft over you would use the rear housing off the Surf and thus all it's speed sensors.

This should be an easy swap. I wouldn't think a trans specialist would charge too much to swap the shafts and freshen up the box at the same time.

 

[poida]

OK for swapping the shaft but as I understand it the surf and soarer boxes have different speed sensors and the soarer auto would need the soarer sensors from its shaft hybrided onto the surf shaft. I understand this from the "verifying auto trans types and uses" post by MacroP.

 

[Zuffen]

From memory the changes are quite simple.

I came across them on another Site. Could be Pirate 4x4 or Outerlimits not sure but look around it's out there.

 

[sideshow]

i have wired up afew surfs

one was auto

the only prob was the customer got rid of the factory harness so i had no idea where some wires went

and they also stuffed the orig gbox so not sur eif the thing would not change due to wiring or mechanical


anyway

u can bolt yr 1uz bellhousing onto the surf auto tranny

then u can wir eup the 1uz and keep the surf auto with the surf wiring on the auto

the surf has its own ecu for the tranny


if u use a crown 1uz then u wont get any probs with errors and stuff

u just have to work out which torque converter to use

i thinki u use crown bellhousing and torque converter

but best to do measurements

then all u need to make is some engine mounts

 

[poida]

Thats sounding good. I like it. I just read somewhere that the td surf has a a343 which is quite a tough box. So this could be easier than I thoight. Sweet. Thanks Sideshow. Hopefully you're spot on. I definately want the surf. The one with the Recaro interior and sunroof would be nice.