Diff from a 5 speed onto a 6 speed?

Reply Subscribe

Thread Tools

Search this Thread

10 February 2010, 09:35 PM

Jonny5665

Scooby Regular

Thread Starter

Join Date: May 2009

Location: Neath, South Wales

Posts: 74

Likes: 0

Received 0 Likes on 0 Posts

Diff from a 5 speed onto a 6 speed?

Hi all

The diff on my 03 sti 6 speed needs to be changed, I have been put in touch with a guy who is scrapping an 03 sti but it has a 5 speed box. Would I be able to used this on my car?

Any help much appreciated

Reply Like

10 February 2010, 10:21 PM

scubbay

Scooby Regular

iTrader: (61)

Join Date: Aug 2005

Location: N.I

Posts: 3,444

Likes: 0

Received 0 Likes on 0 Posts

If its 5 speed its not an STI so no. Type R 5 speeds run the 180 diff that you need. May have to swap the crown wheel depending on your current ratio.

Reply Like

10 February 2010, 10:30 PM

dazdavies

Scooby Regular

iTrader: (22)

Join Date: Oct 2000

Location: N/A

Posts: 7,061

Likes: 23

Received 82 Likes on 46 Posts

Type R R180 diffs won't be suitable as they are a 4.44 ratio.

Your best bet is to source the correct diff which if it's a UK model will be a 3.54 R180 or if its a jap model will be a R180 with 3.9 ratio.

The R180's use bigger shafts that wont physically fit into the five speed diff.

There's plenty of them about and prices arent ridiculous.

Last edited by dazdavies; 10 February 2010 at 10:31 PM.

Reply Like

11 February 2010, 12:54 AM

Jonny5665

Scooby Regular

Thread Starter

Join Date: May 2009

Location: Neath, South Wales

Posts: 74

Likes: 0

Received 0 Likes on 0 Posts

cheers for the replies.
I have been quoted £350 for a refurbed one, but was just looking around to see if i could get any cheaper.
Would ebay be worth a look?

Reply Like