Toyota A series differentials (~1995 onwards) ratios? can i use G series crown/pinion

[takai]

You have a 700hp hand brake? Really quick 100 to 0 times?

Yeah, tis a 7M. Released out the back on a chain, oldschool anchor stylez.

[ed]

Missed by <-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------->
that much

we'll see pretty soon then, huh?

[Mos]

is anyone able to collaborate the following information????

According to the EPCD, the GS171 Crown Majesta came with an interchangeable 4.556:1 A series diff, C&P Part number is 41201-80015 if you wanted to check pricing with Toyota

I looked at the available OEM A series ratios a few years back which covers 3.2:1 through to 4.556:1.
GS171 is the same A series diff as JZA80/JZZ30/UZZ40 - I cross referenced the open diff centre part number from a UZZ40 to be sure... we bolt in UZZ40 and JZA80 centres and C&P in JZZ30 housings.
Surely easier and cheaper than rigging up a G series cradle in there.

I think this is incorrect.

GS171 1G-FE diff case is 41311-22060
GS171 1G-FE diff gear is 41201-80015 which is 4.556 ratio

JZS173 1JZ-GE diff case is 41311-22060
JZS173 1JZ-GE diff gear is 41201-80004 which is 4.300 ratio
which are both identical to the GXE10 and some SXE10s

We know that the GXE10 has an A/F 7.5" series diff. The EPC, therefore, suggests that the GS171 diff is in fact an F and not a G, regardless of whether it's an A or something else.

Going a bit further:
JSZ175 2JZ-FSE diff case is 41311-22080
which is the same as the:
JCE10 2JZ-GE or IS300.....
Incidently, the diff gear is 41201-80050 for both the 2JZ-FSE JSZ175 and 2JZ-GE JCE10 at 3.727.
This would imply it's a G series diff.

Too bad Linden's EPC throws an error when I try to select JZA80

The EPC isn't too good at identifying which engine that part belongs to (or I don't know how to do it other than tracing it back by looking at the specific car with the specific engine).

Mos.

[Draven]

anyone have a working EPC they can look up late model JZA80 diffs?

[ed]

late model is A series, same as early NA and TT auto

[wilbo666]

41201-80027, Final Geat Kit, 9305-0208, JZA80 (4FC,5F)..TWC *FGR=49:12=4.083
41201-80031, Final Geat Kit, 9305-0208, JZA80 (6F..TWT,4FC..TWT) *FGR=49:13=3.769
41201-19645, Final Geat Kit, 9605-0208, JZA80 (6F..TWT) *FGR=49:15=3.266
41201-80055, Final Geat Kit, 9305-9605, JZA80 (6F) *FGR=49:15=3.267

Will xref shortly...

41201-80027:


41201-80031:


41201-80055:


41201-80055: -> JZA80 Only



Mos:
I'm not able to get a part number just for the casing...what am I missing?

Also my EPC doesn't go upto JZS17x....and I can't look at lexus stuff (such as GXExxx)...care to enlighten me!?

Cheers
Wilbo

[Draven]

I know this... more interested in what type of A-series

The g-type?

[madmont]

Here are a few images from the EPC
Crown Majesta ratios



41311-22080 applications (all g series)






41201-80050 applications (all g series)



GS171 diff



GS171 diff assembly



JZA80 diff gears

[madmont]

41201-80015 (F series)

[Sciflyer]

We know that the so called "A" series Supra/Soarer/Aristo diffs cover ratios from 3.27:1 to 4.08:1, and they are all pretty easy to get hold of

The question is will the centres or ideally just the cw+p gearsets from the JZX/IS/GS which give you access to ratios above 4.08:1 fit?

[Mos]

The question is will the centres or ideally just the cw+p gearsets from the JZX/IS/GS which give you access to ratios above 4.08:1 fit?

NO!! At least not the ones you've pointed out thus far.

41201-80015 (G series)

What information suggests it's G? Everything I can see suggest this part number is F.

You guys are not looking at all the info (unless I'm reading this completely wrongly).
GS171 is NOT a G - it sits on a 41311-22060 diff case - 41311-22080 is the G series case.
41201-80015 is not a G - this crownwheel sits on a 41311-22060 diff case.

JCE10 is the 2WD IS300 - accepted as G series - 41311-22080 diff case.
JCE15 is (i'm fairly sure) the 4WD IS300 which appears to have the same diff as the GXE10 and GXE15 - presumably because it has two diffs they don't need to be as strong and you get exactly the same assembly front and rear.

Be careful with things like JZS17* because it can be a 1JZ-GTE/2JZ-FSE (bigger diff) or 1JZ-GE (smaller diff) or 1JZ-FSE or whatever - it does not imply G series diff.

Mos:
I'm not able to get a part number just for the casing...what am I missing?

On the same page that has the 41201 number there should be an assembly for the actual hemisphere - should start with 41311 or 41301 (from memory) or others. This is the bit that the crownwheel bolts onto.

Also my EPC doesn't go upto JZS17x....and I can't look at lexus stuff (such as GXExxx)...care to enlighten me!?

Altezza GXE1*, SXE10, JCE1*. The Aus IS200/IS300 have different part numbers. For the IS200 at least, the part cw&p part numbers do not appear in the toyota EPC, however the case is 41311-22060 (based on a phone conversation with Lexus dude).

Mos.(with no access to EPC right now after an awesome meal at Tetsuya's!)

[madmont]

Quote:
Originally Posted by madmont
41201-80015 (G series)

What information suggests it's G? Everything I can see suggest this part number is F.
You are correct I am wrong again the part number is for the front diff of the Hilux which is F series
I have now corrected it

[wilbo666]

On the same page that has the 41201 number there should be an assembly for the actual hemisphere - should start with 41311 or 41301 (from memory) or others. This is the bit that the crownwheel bolts onto.

Ah OK, when you said case, I was thinking the big cast thing that all the other parts sit in and you bolt into the car

That is what Toyota call it tho... and I guess it is the case for the spider gears / LSD components tho

Ta

Note: I'm also away from my EPC so can't xref the JZA80 diff centre (case) atm...

Cheers
Wilbo

[clubagreenie]

Mos, what do the UZS models have? potential there as can be 2 or 4wd and wagon may have live axle still?

[wilbo666]

JZA80 Diff Centre:


41301-14100:


41301-24031:


41301-14080:


41301-24040:


41301-24030:


Cheers
Wilbo