Is there a problem fitted the STi7 or 8 6 speed box and diffs to UK WRX 2002 re the ECU?

I've been advised that there are extra signal outputs from the 6 speed gearbox & rear dif to the ECU & dif control switch.
My earlier ECU wouldn't be compatible with this?

John Banks etc...how did you get around this problem?

 

The issue you'll have will be controlling the DCCD, assuming the box you get has one fitted.

You can, of course, install the box as it comes, in which case you'll have no way of controlling the centre diff, and thus will be stuck with the 33/66 front to rear torque split. This isn't the end of the world, and there are a few people running this sort of transmission setup without any problems at all.

However, if you do want some form of manual control, let alone the fully automatic mode offered by the JDM cars, then yes, you will need (considerable if you want a full DCCD-A) extra wiring harness, control modules, thumbwheel/switches, dash display etc.

 

Arh, sounds expensive...

I didn't know the std Sti7's with suretrack had DCCD centre...anyway...I might have to opt for the std setup with no control due to funds. Maybe then I might look at it as a project for the future. A manual control would be okay for me...although I know the auto DCCD is out of this world for traction.

 

It'd help a bit if you cut this "STi7/8" bollocks out and told us properly what market and model of car the gearbox is coming from.

You didn't say whether you were getting a DCCD box or not. What you did say was that you'd heard comments about the six speed boxes having extra signal outputs and a diff control switch. The only six speed boxes who have these extra signals are the DCCD equipped ones.

If you're getting a box out of an STi Type UK, or a lower spec, non-DCCD JDM car, you will obviously not have the problem of the extra wiring...

 

Sorry grease...wires cross like. Powerstation said there's problems with extra signals from 6 speed box.

I'm after a UK 6 speed with suretrack diffs...not found one yet. But If std UK Sti7 box comes without DCCD, then that's what I'll be getting.

So no probs with extra signals if std uk box?

 

Lol, there's no such thing as a "std UK STi7". Does not exist, never did. Only STi7's are JDM ones, and the bugeye Type UK's are, if you're going to give them a number, 8's. Better all round if you forget about the numbers and just talk model years and market. That way no chance for someone to misinterpret/misunderstand wot you're saying!

No problems with "extra signals" with an STi Type UK box, no, just speedo sender, reverse and neutral position switches as you'd find on a 5MT. Only potential issue (which the likes of David W and JB will no doubt know the answer to) is whether you've got to do anything with the speed sensor output to get it to read properly on a classic.

 

Ah, okay, sounds better...budget safe by the sounds of that then. Yeh, I'm looking for STI type uk box and diffs...

It's for a new age, 2002 wrx so I would expect the speed sender would be the same?

 

If I remember right, the speedo drive on the 6MT is on the front diff, whereas on the 5MT it's on the gearbox output shaft. Not sure whether this alters the number of pulses you'd get per wheel rev.

Sure the likes of Dave, Richard D and John will know, so with a bit of luck it won't be long before they see thread and comment.

 

I wonder what sort of signal the DCCD needs to drive it - it can't be rocket science. Anyone ever put a 'scope to it?

 

I'm sure there's a fix for speedo as a decent few have done the install...even on new age I think (prodrive guys have done installs on uk 2002 wrx).

Tracking a box down is going to be the hardest part by the looks of it...

Cheers for the advice greasemonkey.

 

I fitted a new UK STi 6 speed box (without DCCD) and it fits straight in my Euro MY00. All the wiring is compatible. There was a spare wiring loom with open connectors on each end, so I just removed that, but the ground straps, speed sensor, neutral switch all just plug in.

 

Ditto what John says, i just transplanted the speed sensor from my UK MY00 gearbox into that of the JDM 6 speed. Yet to check the speedo, need engine in for that, but dont think there will be a problem.

correct

 

Do you think the fitment will be the same for an MY02 UK WRX? Would be nice as I think the setup costs enought without having fitting problems.

 

Yes, under the skin they are pretty much the same.

 

Be careful which 6 speed box you get, not all have suretrac diff, there are a few different models of the 6 speed.

This may help....

6 speed part no.

Cars
32000AF460 Standard (without SureTrac)
32000AF500 with SureTrac
32000AF470 with DCCD and SureTrack

boxes
TY856WB1AA is a STD frt, STD ctr 6MT, rev1
TY856WB1BA is a Suretrack frt, DCCD ctr, rev1
TY856WB1CA is a Suretrack frt, STD ctr, rev1
TY856WB2CA is an Export model (NZ, AU) 1.1:1 ctr?
TY856WB2FA is an Export model (NZ,AU), rev2
TY856WB2GA is a RA spec C w/DCCD,tranny cooler, rev2

Conrad

 

Steven , which one is yours? Cheque in post today also

 

Gearbox: 32000AG170
Propshaft: 27111FE020
Quickshift: ST350104S020

Is what I got. The box is UK with the tall 5th and 6th, and there is something funky with the front diff that makes me giggle like the last one didn't

 

Interesting John because that number isnt in the list

Conrad

 

Lol, does it tickle your bollocks on WOT, or is that not the sort of funky you meant?

 

Conrad

TY856WB1CA is a Suretrack frt, STD ctr, rev1

guessing johns will be

TY856WB2CA is an Export model (NZ, AU) 1.1:1 ctr?

John can you check, just infront of the startermotor on the top of the gearbox, is a sticker with this code on. should correspond to one of the above.

steven

 

TY856WN2CA

 

TY856WB1AA is a STD frt, STD ctr 6MT, rev1
TY856WB1BA is a Suretrack frt, DCCD ctr, rev1
TY856WB1CA is a Suretrack frt, STD ctr, rev1
TY856WB2CA is an Export model (NZ, AU) 1.1:1 ctr?
TY856WB2FA is an Export model (NZ,AU), rev2
TY856WB2GA is a RA spec C w/DCCD,tranny cooler, rev2
TY856WN2CA is a UK Suretrack frt, std ctr, 1.1:1

 

Cheers for the info Conrad.....always iffy buying a box and not knowing if it has suretrac when you want it - only other way of telling is to take it apart - no way!

 

And what can you say about this two transmission numbers?

TY856WN2FA (Spanish Bugeye STi "prodrive Lmtd. edition")
TY856WN3FA (Spanish MY03 STi, mine )

If you can not help me whit this, where can I get adviced?

Kind regards!

Note: I´m pretty sure that the 3FA comes with Suretrack fron diff, since driving on corners and with the trotle on, the nose of the cars thend to close... but wanna be 100% sure...

 

I´m still wanting to know where to get adviced...

 

What box is a ty856b4vs does have surtax fitted

 

[QUOTE=wagon dec;9967119]What box is a ty856wn4ca does it have suretrac diff

 

Blimey that's an old thread resurrection.............. It was nice to look back on one of Greasemonkey's rants LOL

Shaun