Is it possible to achieve awd 3sgte daily driver in california? Options

[st94]

I have been looking into swapping my 1994 ST 1.8L w/ auto tranny for a jdm 3sgte. Is it possible to use with awd tranny in CA?
I am aware that the Japanese do not have EGR systems. Is it possible to use a intake manifold and egr system from a close relitive in california for smog purposes?
Will the gt-4's gas tank mount in the same spot on the 6G st?
I wish to achieve awd, is their a large problem that I am overlooking? Because not many people are doing this it seems..
Is it because lack of drivetrain/suspension parts in the US?
Is their holes to accomidate the driveline bracket?
Cat converter?
exauhst, will it get in the way of the driveline?
I am assuming the front ST halfshafts wont spline up with the jdm tranny?
Will I be able to use the front hub assembly?
How would I cope with the rear diff between the rear halfshafts?

This post has been edited by st94: Mar 4, 2010 - 11:35 PM

[Hanyo]

Hi welcome to the board.

All the issues your bring up can be easily solved once you get the awd drive train in. The st/gt celica has the same frame from the back of the driver seat on forward.

The main problem you will face with an AWD conversion is getting the rear end suspension welded in properly. You need to consider when you cut out the stock rear-end to make room for the AWD parts; you are modifying the unibody and frame. If you can find someone who is skilled enough to do that, then everything else would be a breeze.

to answer your questions:

Since you have a 94st you must put in a 94+ mr2 turbo 3sgte in order to be bar and smog legal. You need to transfer all the mr2 emission stuff over. The jdm motor will not work because of the egr and the ecu can not be BAR. Bar and smog does not check what transmission you use.

The gas tank will mount up according to how you modified your car. Everything from the driver seat back will have to be custom to make the car AWD. Some people use a gt4 subframe so everything from a gt4 will transfer over. Others custom made a rear subframe therefore they had to use a fuel cell. In order to pass the bar you must use a OEM gas tank. Depending no how anal the bar inspector is, they might let you slide with a gt4 gas tank. In order to officially pass smog and bar you must use a MR2 gas tank.

The exhaust will run the same route as gt4's exhaust. After all the gt4 already has awd and an exhaust.

The st axles will not work. You will need hybrid axles, basically you will be using gt4 awd axles mixed with st axles.

you should be able to use the ST hub assemble.

how you cope with the rear diff and half shaft depends on how well you source your parts and how good you can fabricate everything.


To conclude you questions. You have two routes to go. the first route is to weld in the GT4 rear subframe. This will allow you to bolt up all the OEM gt4 parts and make your st celica into a gt4 just by swaping over aparts. The second option is to go full custom and make your own subframe and source different parts to make your car AWD.