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Auto Boxes
Posted: Sat Dec 27, 2014 1:39 pm
by yarney
Marry Christmas everyone
Has anyone got or know where i can find info on Australian Subaru auto boxes, gear ratios, diff ratios and all that good stuff for around the 1999 models Thanks
Jan
auto boxes
Posted: Thu Jan 08, 2015 2:39 am
by FALCONCONVERTTOSUBARU
No idea Yarn ill try and keep an eye out for you.
Posted: Tue Jan 20, 2015 9:15 am
by FALCONCONVERTTOSUBARU
Have you tried talking to Subaru? and giving them your Vin they might have something on file for what the car would've had fitted?
Posted: Tue Jan 20, 2015 5:55 pm
by yarney
FALCONCONVERTTOSUBARU wrote:Have you tried talking to Subaru? and giving them your Vin they might have something on file for what the car would've had fitted?
Falcon what i am thinking of doing is a converting from 4.11 to 4.444 but want to keep the revs down on hwy driving so the turbo isn't using to much fuel
I want to get an idea on n/a boxes and jdm boxes to see what final drive ratios are with 4.444 diffs The other thing is i want to have the lowest 1st gear ratio i can get as well
I'm happy with 1st gear they way it is a little lower would be nice for off-roading
I hope you can make cents of all that
Jan
yup
Posted: Wed Jan 21, 2015 7:26 pm
by FALCONCONVERTTOSUBARU
ahh ok makes sense to me yeah well when you find out let me know that sounds like something id be keen on to
even though I've only got the crappy (well everyone says they are) 3 speed auto it might be handy having that knowledge for later modification.
Posted: Thu Jan 22, 2015 10:51 pm
by vincentvega
Jan
If they are the same as the early (pre 99) autos then there is no difference in gear ratios. The only difference is the diff ratio.
I was looking into the exact same idea when I built my auto years ago. In the end I realised they all had the same ratio.
The FSM for the various cars will list the ratios in the specifications section. Have a look at a few FSMs
Posted: Thu Jan 22, 2015 10:53 pm
by niterida
AFAIK (99% certain) all the auto boxes are the same internal ratios. Only the final drive changes 4.11 or 4.44
Posted: Thu Jan 22, 2015 10:57 pm
by taza
Forester GT box is the way to go. My 01 auto GT does 6-7 l per 100km on the highway as its doung 2300rpm... then can drop back to 3rd and make full use of the 167 wheel kw :P
Posted: Fri Jan 23, 2015 10:19 am
by vincentvega
he is driving a foz GT already. wants lower diff ratios..
Posted: Sat Jan 24, 2015 8:45 am
by yarney
Yes i want lower diff ratios but want to keep the revs down on the hwy
Jan
Posted: Tue May 05, 2015 10:53 pm
by RSR 555
yarney wrote:Yes i want lower diff ratios but want to keep the revs down on the hwy
Jan
Lower diff ratios will keep you RPM down on the highways.. Higher ratio will increase your RPMs
What car is it going into? as the later boxes use different TCU controllers