4 Speed Auto to EFI Viatara in Sierra

[mike]

As the title suggests I'm considering the 4 Speed Vit Auto box to mate up to my 16V Efi Vitara 1.6 which lives in my 86 Sierra. Search hasn't given me much info and I've been told that box is all electronic and would be a biatch to sort for my Sierra.
Anyone Done it? or Know what it'd take to make it all happy?
Cheers
Mike

[mnemonix]

The 4 speed AW4 is a factory match for your g16b engine.
Ideally, you'll want to source a gearbox from a pre 1997 g16b vitara, as vehicles later than this year integrate the transmission control module with the vehicles ECU. Wiring the TCM is a simple job for anyone who can handle the wiring aspects of a g16b conversion.

You'll need: gearbox, torque converter, TCM, shifter, kickdown cable, auto pedal box etc.
The transmission tunnel needs widening in several spots if your car was a factory 1.3. Much more work is required if it was originally a 1.0.
The rear gearbox mount will need to be fabricated.

If you use the vitara transfer case, new driveshafts will be needed.
If you use the sierra transfer case, an output adaptor to support the jackshaft is needed and the jackshaft must be shortened to suit. pm "JoeBlow" to make one for you. The sierra transfer can remain in the factory location, but beefing up of the mounts is desirable.
A few people have engineered twin transfers, utilising both the stock vitara and sierra transfers for the best spread of gear ratio's.

[mike]

Awesome response! thanks muchly!!

[supazuk]

i have one of these on the way, hopefully it makes fitting the auto relatively easy.

http://www.trailtough.com/index.php?pag ... &Itemid=53" onclick="window.open(this.href);return false;

[Guy]

i have one of these on the way, hopefully it makes fitting the auto relatively easy.

http://www.trailtough.com/index.php?pag ... &Itemid=53" onclick="window.open(this.href);return false;

If you dont mind posting .. what were you stung for shipping on that ?
I am looking at the autoing my Zuk as well.

[supazuk]

i have one of these on the way, hopefully it makes fitting the auto relatively easy.

http://www.trailtough.com/index.php?pag ... &Itemid=53" onclick="window.open(this.href);return false;

If you dont mind posting .. what were you stung for shipping on that ?
I am looking at the autoing my Zuk as well.

$120us

[Guy]

i have one of these on the way, hopefully it makes fitting the auto relatively easy.

http://www.trailtough.com/index.php?pag ... &Itemid=53" onclick="window.open(this.href);return false;

If you dont mind posting .. what were you stung for shipping on that ?
I am looking at the autoing my Zuk as well.

$120us

Bugger me shipping from the states is murder .... thanks.

[suzi-fan-22]

i was thinking about this the other day, and i wanted some pros and cons for on and offroad

also is there a downhill decent control/switch?

what else needs to be done/modded to bolt it up to a sierra transfer?

anyone have any links or guides?

thanks

[Gwagensteve]

Conversion Kit: (Note, you still need to perform a 1.6 conversion as well as this kit)

http://www.trailtough.com/index.php?pag ... &Itemid=53" onclick="window.open(this.href);return false;

Install instructions:

https://acrobat.com/app.html#d=9BB9zOiHS3SrbM5chAU7MA" onclick="window.open(this.href);return false;

No there is no "descent control" however, if your car is properly geared and your brakes work properly descents are no problem at all, you'll often find that 2nd low is fine. It is possible to play around with the torque converter lock to provide manual engine braking, but the auto cars I've been involved with don't find descending a problem without doing this. Gearing is critical though. An auto is more forgiving of tall gearing than a manual, until descending.

Cons: Can't push start the car - if the starter is dead you aren't getting the car going. Can't "dump the clutch" to clean the tyres out. ( you can]/i] neutral drop, but it is hard on the auto) Auto temperature needs to be monitored to avoid damage. (Cooler/gauge). Some loss of in gear "punch" due to the converter. Added weight.

Pros: Totally unbeatable control. Wheel speed is "decoupled" from engine revs so you can control torque at the wheels without having a fixed wheel speed. Never roll back when pulling away off road. Park locks the wheels irrespective of handbrake. Gear changes without loosing momentum or wheel speed. No clutch to fill with mud or slip.

The harder the terrain, the more an auto shines.

Steve.

[phils.zook.on33's]

i thought id throw in my 2c. i have fitted a vit 3 speed to my zook and would say its the best thing iv'e done to the car(its a truggy) to increase its drivability over harsh terrain. the 3 speed was a cheaper option to the 4 as i picked everthing i needed up for bout 200$, the install was pretty basic as well with more tunnel needing to be cut out as the 3 speed is a widder unit to the 4 speed. a home made adaptor was made for the gearbox to 6.5 sierra case, flex plate, bellhousing and tourque convertor were all bolt up. a vacum line was installed to the inlet side of the engine and the shifter fitted.

two of my mates run the 4 speed box 1 in the factory wiring harness coupled to a vit 1.6 efi and 6.5 sierra case, the other a full manual valve body with a fancy controller box fitted in a vit with 1.6 carb engine coupled to hilux 4.7 case. both having advantages and disadvantages compared to the 3 speed.
-the 4 speed has lower first gear and higher 4th gear over the 3 speed.
-the 3 speed will hold 1st gear regarless of engine RPM but the 4 speed will auto change into second when overrevved and sometimes while decending step hills even when locked in 1st.
-the manualised 4 speed will hold any gear its locked into but will not kick down even if needed and will also not start in first gear if u stop but will try to start in whatever gear its locked into.

hope this helps someone out there.