t-18 t series diff ratio?

[nos_86]

does anyone know what the ratios are in these diffs?

[Javal]

There are a number of different centres / ratios available for them, the most common 4 being 3.7, 3.9, 4.1 and 4.3.

however the ones out of T-18's will be either:

Series 1 T-18 = 3.9

Series 2 T-18 = 4.1

(i may have these mixed up)

Javal.

[gumbie]

<div class='quotetop'>QUOTE (Javal @ Jan 21 2008, 07:56 PM) <{POST_SNAPBACK}> (index.php?act=findpost&pid=472555)</div>
(i may have these mixed up)

Javal.[/b]


Nope they are right

sorry just looked at that again they are not right

series 1 is 3.7

series 2 is 3.9

[Jonny Rochester]

My EPC says all T-18s have a 3.727:1 diff ratio...

The 2T-GEU equiped models had 4.1:1 diff I think.

The RA23 Celicas had a 4.1:1 diff ratio which is why a few of them are floating around.

[riojin]

theyre all 3.9 according to this

http://toyotaaxle.norbie.net/AxleList.aspx?ModelID=2

[Jonny Rochester]

Well, that lists TE71 not TE72. A big difference.

[Javal]

<div class='quotetop'>QUOTE (Jonny Rochester @ Jan 21 2008, 10:21 PM) <{POST_SNAPBACK}> (index.php?act=findpost&pid=472644)</div>
Well, that lists TE71 not TE72. A big difference.[/b]

I know firsthand that they have different ratios.

It makes sense as well, as they both had different versions of the T50. I know for a fact that at a minimum the speedo drives are different.

[Jonny Rochester]

My info says every T-18 has diff code T302, which is 3.727:1
And their speedo gears are 19:6 in the gearbox.
All, from August 1979 to May 1983.

The different versions of the T50 is to do with shaft and bearing sizes. The ratios are the same.

[Javal]

<div class='quotetop'>QUOTE (Jonny Rochester @ Jan 21 2008, 10:37 PM) <{POST_SNAPBACK}> (index.php?act=findpost&pid=472654)</div>
My info says every T-18 has diff code T302, which is 3.727:1
And their speedo gears are 19:6 in the gearbox.
All, from August 1979 to May 1983.

The different versions of the T50 is to do with shaft and bearing sizes. The ratios are the same.[/b]

Speedo gears would be different due to different diff ratios.

S1 speedo cable + dash will not work in a S2 T-18 because they will not fit the speedo drive. Same goes the other way round.

So at the very least the speedo drive is different.

Which would denote some variation in the gearbox. i wasn't implying the ratios were different, however i'm 80% sure that the splines are different between S1 and S2.

I'm not saying you're books wrong, or even that i'm right, this is just in my experience / re-enforced by JHS's antics.

you could call JHS if you want 100% confirmation?

[Jonny Rochester]

Just a photo of a ID plate will be fine. :)

I don't have many T-18s sorry. Im just testing my info.

[Javal]

<div class='quotetop'>QUOTE (Jonny Rochester @ Jan 21 2008, 11:00 PM) <{POST_SNAPBACK}> (index.php?act=findpost&pid=472683)</div>
Just a photo of a ID plate will be fine. :)

I don't have many T-18s sorry. Im just testing my info.[/b]

Nor do i, and i never have.

i've just spent too much time pulling diffs from pick-a-part, changing centers and working on JHS's T18s in the past.

[nos_86]

thanks for the info guys

[Klutch]

{ RUF 718 } マスターのステップ Atlas....懸濁液のマスターのチューナー... says:
wanna make a post?
{ RUF 718 } マスターのステップ Atlas....懸濁液のマスターのチューナー... says:
http://www.ae86drivingclub.com.au/board/in...showtopic=25585 (http://www.ae86drivingclub.com.au/board/index.php?showtopic=25585)
{ RUF 718 } マスターのステップ Atlas....懸濁液のマスターのチューナー... says:
just point out that S1 is 3.7, S2 is 3.9

[RobertoX]

I WILL SET THIS IS STONE

s1 t18 diff - no swaybar mounts 3.7 ratio

s? 3.7 with swaybar - rare

s2 (rubber bumper) 3.9 swaybar

END

lock thread!

[Nikkojoe]

Lol, i must have that rare one then (s-b mounts + 3.7 ratio):P

[RobertoX]

nah they are a series one factory option type y0