Gearbox diff question

[Guest]

If my gear box hs a 4.4 ratio and my rear diff is 4.1 what handling/drivability issues would this cause??

[funkytown]

you'll lunch your center or rear/front diff real fast.

it will feel very unsettled when trying to make it turn.

they HAVE to match dude. Change one of the two asap

[gotasuby]

ive got a 4.44 rear diff if you need

[Guest]

It does feel very unsettled when taking corners which is what led me to think somthing maybe up, i was on the drag strip friday night at meremere and taking off from the line both front wheels light up big time yet the rear doesnt at all

[Guest]

Sounds like centre viscous is smoked out already !

[Guest]

what ratio is a ver 5 sti wrx sedan?

[funkytown]

 98_STI_WAGON said:

what ratio is a ver 5 sti wrx sedan?

'should be' 4.444 if its manual.

Whats the gb code of the plaque on the strut tower

[Guest]

my wagon has had a conversion to an sti gearbox but i think the rear diff was left factory

[funkytown]

 98_STI_WAGON said:

my wagon has had a conversion to an sti gearbox but i think the rear diff was left factory

yer so tell me what the code on the plaque says.. and i will tell you waht the diff ratio is (assuming its been left factory)

Actually can you post the 'new' gearbox code as well please..

if the g/b has been changed and you think the rear diff is still the same then its likely you have a 4.444 rear diff and 4.111 front.. which would make sense as to why your front smoked up.

If it was the 4.11 at the rear i would expect the rear to smoke badly.

[Guest]

752vbcaa gearbox code of gearbox in car

754vb1aa code on strutt tower

[gotasuby]

gearbox is 4.44 out of v3-4 sti

[gotasuby]

origonal is 4.11

[Guest]

sux when you buy a car and the previous owner tells you its one thing but turns out being another

[DRFVDR]

 Ichi Ban said:

Sounds like centre viscous is smoked out already !

This too

u will be up for a new centre viscous coupling

[hijacka]

 DRFVDR']

[quote name='Ichi Ban said:

Sounds like centre viscous is smoked out already !

/quote]

This too

u will be up for a new centre viscous coupling

I smell a rwd conversion,Weld it up and while the box is out remove the front crown wheel..this way you will never have to worry about matching diff ratios and wheel dia/diff binding again

but i have about 10 centre diffs lying around if you want a replacement pm

[slystiguy]

I was actually wondering about this same issue because I am buying a new gearbox in a week or 2... I have a 4.1 dif an the sti box im looking at is 4.4 so what is required to make this box work in my car?

[Koom]

You need the rear diff to match the 4.444 ratio (otherwise you'll destroy the centre diff).

Either R160 or R180 depending on what model you have in the first place?

[gotasuby]

i got a 4.44 r160 if you need

[slystiguy]

thanks for the info, will get back to you on diff

[DacerX]

sounds like a good plan, double check everything

[hijacka]

 slystiguy said:

I was actually wondering about this same issue because I am buying a new gearbox in a week or 2... I have a 4.1 dif an the sti box im looking at is 4.4 so what is required to make this box work in my car?

You can change over the front diff of your new box using the 4.1 pinion and crown wheel from your old box..give me a pm if your wanting someone to do this for you and we can work something out.

[slystiguy]

cheers again hijacka I will do

[Guest]

Sorry to dig up old threads. I think my viscous coupling might be shitting a brick as I get a bit of bind whilst turning both forwards and in reverse. What is the cost for one of these?

[Guest]

the other day someone posted a link to another thread about a guy buying a stuffed sti box so he could change out the rear diff etc etc it was in this thread and now seems to have disappeared. I have done a search but can not find it....

[pl0x]

Just search center diff & about 4th one down (in case we lose these posts to)

http://www.clubsub.org.nz/forum/index.php/topic,14965.0.html