Info on F series diff ratios above 4.3

[FAST EDDIE]

What came with a higher ratio than 4.3 in a F series diff?
I already have 4:3 gears and wanna go higher cos im having gearbox issues and wanna use 3rd not 2nd.

[Jonny Rochester]

If TRD did make it, you could find it yourself.

http://trdparts.jp/english/

[FAST EDDIE]

cheers man

[Anthony]

Hey Eddie, you can get 4.556 from the front diff of some hilux surfs, or 4.778 from the rear diff of a diesel 4wd townace import only)

[slydar]

the higher ratios usually come in the front of hiluxs. i have also seen 4.6 in a yr22.

[slydar]

first letter in diff code is ring gear size. these are the relevent ones that we use.

6.38" S
6.7" T
7.1" E
7.5" F
8" G

first two numbers in the code are the ratio.
here they all are.

3.300 01
3.360 02
3.545 03
3.556 04
3.700 05
3.889 06
3.900 07
4.111 08
4.222 09
4.375 10
4.444 11
4.625 12
4.790 13
4.875 14
5.125 15
5.286 16
5.600 17
5.714 18
5.833 19
6.167 20
6.667 21
6.780 22
6.833 23
7.640 24
4.556 25
5.571 26
3.364 27
4.300 28
4.100 29
3.727 30
3.909 31
6.591 32
4.807 "
7.503 33
5.583 "
6.781 34
4.786 "
7.636 35
5.600 "
4.778 36
3.583 37
3.417 38
3.154 39
5.375 40
3.308 41
6.500 42
3.550 43
3.214 44
3.533 45
2.928 46
2.929 "
3.944 47
3.356 48
3.729 49
3.400 50
3.736 51
3.722 52
3.250 53
3.941 54
3.333 55
2.821 56
4.058 57
3.238 58
3.234 59
3.519 60
2.724 61
2.892 62
2.655 63
4.312 64
3.837 65
3.071 66
3.526 67
3.095 68
4.176 69
5.857 70
2.962 71
3.949 72
4.285 73

3rd number will be 2,3,4 or 5. 2 is open (no lsd) with 2 spider gears in the differential. 3 is 2 spider, with lsd (some ma61 supras) 4 is 4 spider gear open, 5 is 4 spider gear with lsd.

stock adm ae86 s312
stock adm t18 t302 early t312 late
stock jdm ae86 t282 or t283 if it has factory lsd.
stock ta22 t292 mostly (4.1 ratio)

[slydar]

also in every case so far that i have found, an irs ring and pinion will work in a live axle diff and vice versa.

[FAST EDDIE]

Hey Eddie, you can get 4.556 from the front diff of some hilux surfs, or 4.778 from the rear diff of a diesel 4wd townace import only)

Cheers for that Ant im guessing it will be the turb diesel version surf?

[FAST EDDIE]

also in every case so far that i have found, an irs ring and pinion will work in a live axle diff and vice versa.


wow thats some serious figures thanks slydar, i didnt quite understnad all that so correct me if im wrong haha realy appreciate all your help!!!!

if im lookin at the hilux surf plate and seeing F4.5 then whatever number depending on lsd or open i should be on a winner?

[FAST EDDIE]

and how do i physicaly know what ratio the diff is by looking at it and counting teeth im guessing?

[Anthony]

petrol and diesel both have that ratio in certain versions. You can trust the diff code on the build plate with 4wd's generally because they would have to change both front and rear for it to be different. unlikely.

[slydar]

on the build plate it should have 1 letter and 3 numbers.

you need the front diff out of a 4x4 hilux. the build plate i think only lists the rear if i remember correctly.. the code for the rear will be GXXX, first 2 numbers are the ratio code. check them against the list above and thats the ratio. front and rear ratios are the same.

toyota ring gears will have the ratio actually written on them.

sometimes its just the number of teeth. something like 41 11.

or just the actual ratio in a circle, like 4.8 with a circle around it. thing to note here is when its written like that, the figure has been rounded. eg my t series 4.778 has 4.8 written on it. but the code on the car was T362.

[FAST EDDIE]

wicked!! im fairly sure that diff you gave me said 4.3 in wrecker writing how acurate would that be man?

[slydar]

and sorry should have explained, in that list, the ratio ive written first, then a space, then the 2 digit code for that ratio.

so 4.444 is 11
4.625 is 12
4.556 is 25

those are the numbers youre looking for.

[Anthony]

yeah it was 4.3 for sure. ive got a 4.7 for mine this time. to go with w58.

[Golberg]

Removed caps for you :)

[FAST EDDIE]

ooooh thats why i didnt get it hahaha

[FAST EDDIE]

yeah it was 4.3 for sure. ive got a 4.7 for mine this time. to go with w58.

4.7 sheesh tats prety serious but might have to go to that!!! you dont have any 4.5 lying around up there do ya?

[FAST EDDIE]

well i just went to a comercial wrecker who imports toyota ratios and he was saying he had a 4.7 ratio which got me excited so after alot of measuring and realising the 4.7 was smaler than a f maybe a t or an e he had what he said was an oddball 4.55 ratio, after trying the axle and comparing it to my 4.3 centre it turns out the centre he had was a 4.55 f series. so theres another one to add to the list there is a 4.55 solid axle centre diff available!!!!

[Celica RA45]

the 4.55 is called a 4,6 they are also 4.78 and 4.88 availible as well brand new crown and pinions are about 450 aussie

[slydar]

4.556 > code is 25... pretty sure that list is fairly complete.

either way, got what you need now?

[dr1ft-pig]

just want to clarify one more thing...

i read in here that u can get centres from the front of hiluxs,etc

will the front ratio be the same as the rear??? in theory they should be but is there something in the tranny case that makes a difference???

[FAST EDDIE]

yes front and rear diffs r the same ratio.

not sure slydar have to try it i neede to try either 4.55 or a 4.77 to see what i need. will see how this onw goes then may need to go to 4.7

[dr1ft-pig]

sweet so if i ind a good ratio code on the compliance plate i flog both centres

i like this alot... going to 4wd wrecker tomorro

[FAST EDDIE]

i have the trans axle code of a 07 diesel hilux and saw an f in the code and dont get how this code works so the knowledgeable let me know.

trans/axle a340f bo1b

[FAST EDDIE]

up to the top for all those that were away on the weekend

[FAST EDDIE]

up to the top again

[Anthony]

no good eddie, the f is part of the auto transmission code. the diff is b series, incompatible.

[slydar]

that code doesnt make any sense to me.

the next biggest size diff after G is A, and that is what i would expect in the rear of a late diesel hilux, but yeah i couldnt tell you if the front diff was gonna be f series or not.

but yeah that code doesnt make sense to me.. or set out how they usually are. maybe if you took a photo of the build plate i could help but yeah later stuff is a bit strange sometimes.

eg's for say, a ta22 celica, which will have a 4.1 t series. code will be T292

another eg, say, mid 80s tarago, mostly are e series 4.3, they will be E282

to get an F series out of a 4x4 hilux, usually earlier stuff is G series rear, so it might be G282, if its G series rear it will be F series front, front and rear ratios will be the same, so you can assume with some level of certainty that the front diff is a 4.3 F series.

[Rip it]

Also remember that all rear Hilux's are G series, independent fronts are different, could be worth looking at the code for an independent front, should be F series. They are different front and rear.

[FAST EDDIE]

damn thats the exact cod i read off the plate next to trans/axle oh well i was excited was an o7 hilux

[Dazzla86]

yeah it was 4.3 for sure. ive got a 4.7 for mine this time. to go with w58.

What does she rev at 100 with 4.7's with the w58???

[sundee]

Also remember that all rear Hilux's are G series, independent fronts are different, could be worth looking at the code for an independent front, should be F series. They are different front and rear.

ive got an IFS hilux ill check the diff code tomorrow

[GOODY]

I've got a 4.5 shimmed lsd that I'm wanting to swap for a 4.11 if that interests you? I'm not 100% sure if it's an f or g series though. Is there a quick way to find out?

[sundee]

sweet so if i ind a good ratio code on the compliance plate i flog both centres

i like this alot... going to 4wd wrecker tomorro

I wouldnt do that.. those early hilux's with the solid front end have a G series Rear.. but F Series front..

[driftke70]

I've got a 4.5 shimmed lsd that I'm wanting to swap for a 4.11 if that interests you? I'm not 100% sure if it's an f or g series though. Is there a quick way to find out?

pretty sure you couldnt have a shimmed lsd if it was g series.

also ant how necessary do you think 4.7 is with a 58? I have a 55 in there till i finish the car and can afford a nice 58, but if the center needs to be changed id rather have that good to go before I get it all back together, its a 4.3 at the mo.

[Anthony]

hard to say. 4.3 will be fine, I just wanted to get the same overall ratio as the J160 in 2nd with 4.3 was as I liked it. I guess with the W58 and a 4.3 it would just be a little quicker. probably not such a bad thing.