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diff ratio Q
Posted: Tue Jun 26, 2007 12:04 am
by brumbyrunner
Can anyone tell me what the diff ratio is in a 2003 WRX STI (Aust. delivered)?
I'm thinking it's 3.9:1
Posted: Tue Jun 26, 2007 11:31 am
by Suby Wan Kenobi
I think it was 3.9 as well but if you have the serial number of the Box Brett has a listing of what ratio coincided with that number
Posted: Tue Jun 26, 2007 5:17 pm
by Outback bloke
3.9 as you thought. Buy the diff and worry about the shafts later.

Posted: Tue Jun 26, 2007 8:26 pm
by brumbyrunner
I was outbid. Ended up selling for $405 plus freight would have been $80 so I let it go. I am a fair way off needing an R180 anyway. When I do step up, I think I will get shafts made with Porsche flanges so I can run 904 or even 934 CVs.
Posted: Wed Jun 27, 2007 9:50 am
by bluesteel
someone on the rslib board picked that one up
