As some of you may know, I've been on the lookout for a 4.3:1 ratio for my T-series diff (and an LSD if I can find one cheap enough).

 

Anyway, as far as I know my diff is out of an RA28 Celica (so I'm told anyway), and has a 3.9:1 ratio. Center is broken, missing bits that should be there. I did count the teeth when I first took it out, but have forgotten now, but I think it was a 43/11 ratio (3.909).

 

Anyway, I was speaking to the boys at Option1Garage the other day (they seem to be the only people I can get an LSD or gears from, everybody else seems to talk a lot and not deliver), and they had a Cusco center and ring gear. Ring gear out of a 4.3:1 ratio, 43 teeth. But they don't have the pinion.

 

Now, looking at this page, it says that the TA23's and some other Celicas had a 41/10 ratio (4.1:1). Not sure how well this applies to the Celicas we have here, but I do know that most of them came with a 4.1:1 ratio so could either be 41/10 or 37/9.

 

Also, was speaking to Chin (Acoustic) when I was back in Malaysia, and he mentioned that he's got a 4.1:1 now, and he's looking for *just the ring gear* for a 4.3:1 because then he will have a 4.3:1 (reusing the 10-tooth pinion).

 

Is this true? Can ring gears/pinions be swapped with each other like that? Or do they have to match each other?

People on Toymods recon this could be a negatory.

OT: Wow talk about price difference...

 

TA22 diff center from Wacol: $75. Whole diff, $100.

TA22 diff center from Kelly: $175. Whole diff, $220.

As far as I know, you can't mix and match like that, I believe that you require the right pinion for the right ring gear. I know that this is (apperently) the case with Corolla ones.... :P

what's involved in changing diff gearing.

 

ie: for my car, the diff is the same as an oz Crown I believe.. but it'd be nice to have a bit better acceleration eventually.

 

thats done by changing diff ratio right?

Changing diff ratio can help acceleration, yes. bigger number = bigger acceleration, less top speed.

mmm ok.. i guess long gearbox ratios (3spd auto) don't help also eh