Automatic Turbo Impreza Project

[scoobzie]

does anyone think it would be good and to hold more power this is just a thought on a project my friend is considering the transmission wont have the same strains as a manual. and could hold more power does anyone no of it being tried i was speaking to a friend and he thinks it would be worth doing for a laugh any thought,s on this

Edited August 17, 2008 by scoobzie

[st3ph3n]

I would say by the complete lack of replies that this is a project that would be completley insane and not worth the effort.

Unless you plan to fabricate your own auto box, or procure one from .... say a high power merc and retrofit it then you're barking up a gum tree.

An expensive adventure into the unknown.

[scoobzie]

it,s not me thats doing it a friend of mine is going to try it he builds chopper bikes for a living

[st3ph3n]

Then I'm sure he'll have no problem building it!

[Johnny50]

I'm sure some of the early Classic WRX estates came as an Auto ??

Worth looking into.

[emoe]

I'm sure some of the early Classic WRX estates came as an Auto ??

Worth looking into.

The problem with building an Auto box to cope with the power output is to have firstly a torque converter that is capable of holding under the acceleration. a lock up converter is normally the only way to go.

Fluid heat up then becomes a factor and most ATF fluids under heat and extreme pressure will cause foaming. So a good cooler is needed.

Now we get to the main unit.

the actual Valve body itself will need to be matched to the pump pressure (which would have to be quite strong in order to cope with the TC demands)

Then you will need to have a decent set of Clutch bands, and again the pressure valves that actuate them will need to be large enough to both cope with the raised pressure needed for the TC and delivery to the band actuators to ensure drive to the secondary gear sets.

lastly, a decent actuator spring will need to be matched. Judging by the amounts of variables in Impreza Engine Outputs, this is all going to have to be a custom one-off system to manage properly.

The classic WRX that came with an Auto box was down on power so throwing excess of 200hp through that box will start to see failures and hydrolocking.

Now this is not a statement to say IT CANT BE DONE, because i know for a fact that it can,

The problem is money, time and recources to make an auto box work.

Unless you can retrofit an ALLISON auto box from a Chevrolet pickup!!! that would work! they are indestructable GUARANTEED to 1000bhp and 1200Lbs tourque!

[craigdmcd]

You could use the box from a GT-B, these are designed to have around 260ps, but I believe they struggle with much more than that. If you get a late enough version with the correct wiring and ecu, then you can go for the tiptronic option. Not worth the time or money in my own opinion though.

[jimser]

heres the man you need to talk to about autos

"tony the goalie"