5 Spd to 6 Spd Conversion DIY

[Hussain-Vtec]

Originally Posted by Bluevitz-rs

I couldn't find any markings on the transmission that defined it other than it's physical size difference to the 5 spd. When I got it, I didn't know if it was LSD or not. And it wasn't. I just used the info on Wikipedia

OH I see i No the wikipedia info.
But the thing is i need the code to find it easy, there are allot gears sitting over There and that will take my time to search for it and i have a to get some part's
for a friends and to buy a car too that is the case.

[Hussain-Vtec]

OK i find this Code do you have it on your transmission, Note the number is 12 which means C160 (6-speed).

On the Wikipedia site it says (Transmission with identification code ending with 12C are LSD equipped. Code ending with 12A are non-LSD).
http://en.wikipedia.org/wiki/Toyota_C_transmission#C160

C160 ratio info.

[Bluevitz-rs]

cool, I never noticed that there, I'll have to look on mine. I take it that's on top?

Actually, if that's on the bell housing, I don't have that anymore. It was sold with the rest of the 5 spd a long time ago.

[Hussain-Vtec]

Some Search TRANSAXLE ASSY part no..

TRANSAXLE ASSY, MANUAL ( 30300‑1A260 ) C160-12C LSD
1999 TOYOTA LEVIN (AE111-ACFVF) LVN BZR JPN CP 4AGE MTM 6F
Link
http://autoconnectioninc.net/DaCart/...oducts_id=8093



30300-1A260 TRANSAXLE ASSY, MANUAL 01.04.1997-01.08.2000 AE111..BZR ***6-speed***

30300-1A250 TRANSAXLE ASSY, MANUAL 01.04.1997-01.08.2000 AE111..BZG..6F

41301-12041 CASE, FRONT DIFFERENTIAL 01.05.1995-01.08.2000 AE11#..MTM..(BZG,FZ,XZ)

41301-12190 CASE, FRONT DIFFERENTIAL 01.05.1995-01.08.2000 AE111..MTM..(BZR,BZV) ***LSD? ***

[EchoLaQua]

Dude I've been searching for ages trying to find the C160.
I have come accross a few but they dont look the same as yours

They all say in their ad that they're a C160 but Im not convinced. They look completely different. Could it be the year model? What did yours come out of?

I've attached some images, yours is the one with 3 question marks, the other is one I have foung elsewhere (1 question mark).

Also here is a link to another one on ebay (http://www.ebay.ie/itm/JDM-Toyota-Co...#ht_783wt_1114). I get that its sold but it looks different too?

[Bluevitz-rs]

Mine is pictured re-assembled with the 5 spd bell housing on it. You did read the thread right?

[RJay]

Hmm, all of those gears minus the 1st are longer than in my 5 spd, but that 6th does look nice.....

[Bluevitz-rs]

Every gear is shorter than the 5 spd with the 4.5 final. I regularly use 2nd to start because 1st is so short.

[RJay]

So, if you've got an open gearbox anyway when replacing it, can't you drop out a gear or get a different one? My first gear is rather nice, goes to about 30 mp/h.
Shift to 5th at 100-105 mp/h though, so not too bad :)

[Bluevitz-rs]

The gears as far as I know are not interchangeable. 5th gear in the 6 spd only goes about 145-150km/h and has the engine turning around 4100 rpm at 100km/h. Not ideal for every day use.

[RJay]

No, that's a bit obnoxios indeed. I do 4000 rpm at 117 km/h GPS (so about 125-130ish clock) and 3500 rpm at 103/104 gps in 5th.
Never got to the v-max yet, I call game over after I've hit 63k in 3, 68k in 4 and then shift to 5th.
'cause honestly, all that does is increase the bill you get from the state. ;)

[CrankyOldMan]

Originally Posted by Bluevitz-rs

The gears as far as I know are not interchangeable. 5th gear in the 6 spd only goes about 145-150km/h and has the engine turning around 4100 rpm at 100km/h. Not ideal for every day use.

In theory the gears from 3rd to 5th could be interchanged if the shafts have the right splines, but 6th gear would require some investigation. If you need to drop the freeway RPMs in 5th gear, get a 5th gear set from an '03 Matrix C59 gearbox. Most of the 5-speed gearboxes have a 0.815:1 5th gear, but both the 5- and 6-speed gearboxes from that gen matrix have a 0.725:1 5th/6th gear respectively.

At this point, the only way to know for sure with the other gears is to get the parts and see if they fit.

[Godfryness]

Great thread, I am really looking to do this with my gen 1 xB. I have a Yaris FD and wish it would swap over. But it looks like the 6th gear is about 200-250rpm lower then my 5th now so that should help some.

[Bluevitz-rs]

Minor update

After going Boosted, I changed the gear lube to Royal Purple 75w-90 and it fix any problems I had with 4th gear.

I now wish I had an option to swap in a lower ratio Final Drive as I have so much torque now on the highway to save even more fuel. Average is 6.0-6.3L/100km

[xnamerxx]

There is a lower final drive available for the c60 but good luck finding one, it was used on european mr2 spyders. I believe the final drive is 4.3.

[Bluevitz-rs]

I've seen the options but nothing available in North America. Monkey Wrench Racing sells them and actually I can go to a 3.9:1 but the cost for me with exchange rate is way more than my whole transmission.

[thebarber]

I know a guy that has a link to euro c60's with high FD and LSD...$1000-ish, iirc

[Bluevitz-rs]

Yeah my C160 no LSD was $600 CND

The 4.5FD was perfect for NA application but with the turbo it just revs unnecessarily high.