Different manual tranny types??

MMamdouh · Post by **MMamdouh** » Sat Dec 03, 2005 2:43 pm

hi guys... does the following cars use the same manual tranny??

1.5 SOHC Lanos
1.6 DOHC Nubira
2.0 DOHC Leganza

MMamdouh

GsiTurbo · Post by **GsiTurbo** » Sat Dec 03, 2005 4:36 pm

1.5 SOHC Lanos - D16
1.6 DOHC Nubira - D16 or D20(most likely D16)
2.0 DOHC Nubira - D20

Both gearboxes look the same, difference is in the gear ratios and thickness of the gears.

Tom

daftmajin · Post by **daftmajin** » Sat Dec 03, 2005 5:13 pm

Quick q here. D20 will fit on Lanos 1.6 DOHC right? Forgot.

GsiTurbo · Post by **GsiTurbo** » Sat Dec 03, 2005 6:35 pm

daftmajin wrote:Quick q here. D20 will fit on Lanos 1.6 DOHC right? Forgot.

100% bolt on.

MMamdouh · Post by **MMamdouh** » Sat Dec 03, 2005 11:35 pm

OK so if i am considering the following engine swaps what tranny you recommend?

1- 1.5 Lanos---> 1.6 DOHC
2- 1.5 Lanos---> 2.0 DOHC
3- 1.6 Nubira--> 2.0 DOHC

also what is the difference in gear ratios between an F16 and F20? basicly i am looking for a shorter ratio tranny to get the fastest acceleration... i don't care about top speed.

MMamdouh

tango · Post by **tango** » Sun Dec 04, 2005 2:21 am

There seems to be some confusion as to what's different with the D16 and D20.

On the Tacuma it's the final drive ratio that's different on the D16 and the D20. D16= 3.944:1, D20= 3.722:1

However, the D16 fitted to the Lacetti has a final drive of 3.722:1 (like a D20). However 1st gear in the 1.8L has a ratio of 3.545:1 (the 1.4L and 1.6L have ratios of 3.818:1) yet they are all labelled D16.

Now, a further development is that the D20 fitted to the Evanda (Magnus) has a final drive of 4.176:1. On top of that, only 1st and Reverse have similar ratios to the other D20s. 2nd, 3rd, 4th, and 5th are all different.

A D20 from a Magnus would be the best bet for acceleration it seems.

See the tehnical data here for a better look:
http://chevy.mrmax.dp.ua/EN/GMDE_TIS_START.html