|
|
|
|
Thread Tools | Display Modes |
03-30-2021, 08:25 PM | #1 |
Scooby Newbie
Member#: 336566
Join Date: Oct 2012
|
3.9 or 3.54
I have a 2009 wrx. i have a 05 usdm sti rear diff which is 3.9 f.d. i want to swap a 6spd. i am reading different things about the reduction ratio. If a 6spd has a 1.1 t.r. does that make the rear 3.54? if i put in a 1.1 6speed, is it hard to swap pinion and gear in rear diff? can it be done without having to remove diff from car?
* Registered users of the site do not see these ads.
|
03-30-2021, 11:19 PM | #2 |
Scooby Specialist
Member#: 395793
Join Date: Jul 2014
Chapter/Region:
Tri-State
Location: SLC and Lake Placid
Vehicle:2005 92x Aero Beige |
Probably the easiest option is to sell the diff and just get the GR 6 speed. Going in and swapping stuff to make it work may end up costing more money than you think. Unless you have the proper tools and know how for working on a trans.
|
03-30-2021, 11:32 PM | #3 | |
Scooby Newbie
Member#: 487057
Join Date: Jun 2018
Chapter/Region:
BAIC
Location: California
Vehicle:2002 WRX Wagon PSM |
Quote:
1:1 will need 3.9 The swapping of parts is not hugely difficult, but you will need to set gear lash. If you've never done it before, it might be kinda tricky. I also wouldn't attempt it with the diff in the car. |
|
Thread Tools | |
Display Modes | |
|
|