Gearbox confusion!
 

I'm in the process of having a 6 speed conversion on my 2002 WRX, and have come across a few oddities!

The OE 5 speed gearbox code was TY754VN2AA - which is listed as a US box with 3.9 final drive however it is an EU/UK car?

The replacement box is a JDM 6 speed code TY856WB4KA which cam with a matching rear diff (3.9)

Here are the oddities!

APi confirmed that my box was a UK box therefore 3.354 ratio (due to drop gear I believe) so I had to use the supplied rear diff, this caused a further issue with the rear shafts not fitting as my rear diff was LSD and the supplied was a helical so needed different shafts, is the helical rear diff vastly inferior to the LSD?

My replacement box is listed on all the websites as a JDM box with DCCD however we cannot find the DCCD wiring plug? Also the person I bought it from also said it was not DCCD? Any ideas what might be going on?

From your code this 6 speed is from
JDM Impreza WRX STi MY04 + V-Limited MY04 TY856WB4KA 3.636 2.375 1.761 1.346 1.062 0.842 3.545 1.000 3.900 DCCD (35:65) A.P. Suretrac automatic DCCD system


This is from http://spda-online.ca/modules/tinyco...ite/tc_28.html


Jura

should be two wires coming out the side of box with one being black & the other green. but i'm sure brent would know that !

That's the weird thing he opened the 'cover' and there was no harness/socket inside - the online codes all say it's a DCCD?

got a pup then !

Sounds like the uk gearing has been put in a different case

Odd as it was originally an API supplied box!

Could it be a forester or wagon 6 speed jdm, will have the jdm code but no dccd

think poeple are clutching at straws. your fitter should be able to tell you what it is ,and what it is is what it is !

No point in asking was there then

not really with out a pic of the right hand side of the box , would be easy to see if there was dccd or not

I'll have a look once I get the car back on Sat!