Aw4 power handling/ reliablity and performance upgrades.

[child9]

It may be better to use a JDM A340e from a Toyota Aristo (2JZGTE powered Lexus GS300). It is even closer to the Jeep AW4 than the Supra version.

[Mesh]

Originally Posted by norcalchris

=] my first sticky! I just smiled like a little school girl. lol

It's not only your first sticky it's the first sticky for the Street and Performance forum.

If you have the money and go with the IPT parts you might as well send in your old torque converter to be customized. I'm currently sitting on an IPT rebuild kit and and just moved into a place with a garage maybe I’ll start building up my spare transmission.

[5-90]

Originally Posted by norcalchris

=] my first sticky! I just smiled like a little school girl. lol

So happy to help - and I could hear you giggling all the way over here...

If it makes you feel any better, I was halfway considering sticking this thread before I read CherBear's post - once I saw that, it pulled me off of the fence.

[XJLI]

Originally Posted by child9

It may be better to use a JDM A340e from a Toyota Aristo (2JZGTE powered Lexus GS300). It is even closer to the Jeep AW4 than the Supra version.

how so?

and whats the availability like on them? i've never bothered to look anything like this up on say jhot or whatever those other jdm importing sites are. i'm def interested in building/getting a faster shifting aw4 in the future.

[Talyn]

There are also modifications that can be done to the PCM to firm up shifts. When I had my PCM flashed they turned torque management off and turned stall torque off. This resulted in firmer shifts and a more connected feel. I am not 100% what these features do, but since its in the PCM (not TCM) I would think that TCM sends a signal to the PCM to reduce engine output during shifts.

[XJLI]

Originally Posted by Talyn

There are also modifications that can be done to the PCM to firm up shifts. When I had my PCM flashed they turned torque management off and turned stall torque off. This resulted in firmer shifts and a more connected feel. I am not 100% what these features do, but since its in the PCM (not TCM) I would think that TCM sends a signal to the PCM to reduce engine output during shifts.

interesting... you have more info on the flash?

[child9]

One of the clutch pistons is thinner in the Supra A340e due to a slightly shorter bellhousing and different TC. Some of the kits that upgrade the Supra trans include a billet piston. I'll upload a pic later. The Lexus version (and our Jeeps) have a thicker piston and don't require the billet version until you are trying to go over 700+, which I wonder if the 4.0L is even capable of holding that anyway.

[Talyn]

Originally Posted by XJLI

interesting... you have more info on the flash?

I don't recall the company that did it off hand, but it was done through kolak@aol.com. There were also other modifications done to the PCM.

[XJLI]

awesome thanks for the info guys. i really wanna get this motor singing since its fairly low miles and possibly throw some boost on it.

i loev the aw4 but it sure does soak up power, this thread is fantastic. i'll def be doing tranny mods in the near future.

[R6TeXJ]

subscribed!

Any write ups on how to do any of this stuff, rebuild, valve body pics? I know little to nothing about trannies

[NorCalChris]

Originally Posted by child9

It may be better to use a JDM A340e from a Toyota Aristo (2JZGTE powered Lexus GS300). It is even closer to the Jeep AW4 than the Supra version.

Theres two versions of the A340E. The ones in TT setups are way different then the AW4. The A340E's in N/A cars,trucks, suvs, is most closely related to the 23 spline AW4. Same solenoids, same amount of clutches, etc, etc.

Originally Posted by Mesh

It's not only your first sticky it's the first sticky for the Street and Performance forum.

If you have the money and go with the IPT parts you might as well send in your old torque converter to be customized. I'm currently sitting on an IPT rebuild kit and and just moved into a place with a garage maybe I’ll start building up my spare transmission.

It is the first sticky here. Thats awesome. Also, can you possibly email me some pics of the IPT rebuild kit? WickedXJ@gmail.com. I really want to see the clutches and that (c-2 clutch pack). The pic on their site just doesnt do justice.

Originally Posted by 5-90

So happy to help - and I could hear you giggling all the way over here...

If it makes you feel any better, I was halfway considering sticking this thread before I read CherBear's post - once I saw that, it pulled me off of the fence.

Hey I'm glad you did make it a sticky, if people actually read the write up and follow the links that I posted they can learn alot of info.

Originally Posted by XJLI

i'm def interested in building/getting a faster shifting aw4 in the future.

If you read my original post theres a link to a write up on placing shims in the accumilators to reduce shift times. Make sure to read the whole write up and then try it. Theres guys who claim after they did it, thier A340E's shift faster then their manual counter parts.

Originally Posted by R6TeXJ

Any write ups on how to do any of this stuff, rebuild, valve body pics? I know little to nothing about trannies

I didnt find any write ups on rebuilding the valve body, but the shimming of the accumilators has a link posted up.

[R6TeXJ]

Originally Posted by norcalchris

Theres two versions of the A340E. The ones in TT setups are way different then the AW4. The A340E's in N/A cars,trucks, suvs, is most closely related to the 23 spline AW4. Same solenoids, same amount of clutches, etc, etc.



It is the first sticky here. Thats awesome. Also, can you possibly email me some pics of the IPT rebuild kit? WickedXJ@gmail.com. I really want to see the clutches and that (c-2 clutch pack). The pic on their site just doesnt do justice.

Hey I'm glad you did make it a sticky, if people actually read the write up and follow the links that I posted they can learn alot of info.

If you read my original post theres a link to a write up on placing shims in the accumilators to reduce shift times. Make sure to read the whole write up and then try it. Theres guys who claim after they did it, thier A340E's shift faster then their manual counter parts.

I didnt find any write ups on rebuilding the valve body, but the shimming of the accumilators has a link posted up.

you are awesome! The community thanks you!

[Mesh]

Here is a link to my rebuild http://naxja.org/forum/showthread.php?t=962764 It's not a step-by-step but gives some good pictures of the inside. I can take some pictures of the IPT kit but i'm still working on moving so it may be a week or so.

[NorCalChris]

Originally Posted by R6TeXJ

you are awesome! The community thanks you!

Its the least I can do. This forum has fueled my addiction more then any other site. I guess its time to become a member finaly. Its something I've always said" I'll do that next pay check". Then a few years later I've never done it. Haha.

[NorCalChris]

Originally Posted by norcalchris

Its the least I can do. This forum has fueled my addiction more then any other site. I guess its time to become a member finaly. Its something I've always said" I'll do that next pay check". Then a few years later I've never done it. Haha.

Like I said I would, Im finally a member on here. !!!!!!!!!