diff ratios

[phrogmodz]

im in the process of fitting a hilux diff
in the kp60 and am interested in recomended
ratios to run and why
1984 kp60
1995 ae101 4agze map
td04 turbo

also factory ratio of starly diff?
cheers

[Rick]

If you can tell me the the axle code from the vehicles indentification plate I can tell you the ratio of starly diff.

[phrogmodz]

cheers ill grab it tomorrow

[Rick]

In fact you can do yourself , quite handy information to print off for later, also bloody handy when trying to find a hilux diff.


Read the Axle Code from the vehicle indentification plate.

first digit: ring gear diameter

A 138mm
B 145mm
C 6.25"
D 6.62"
E 7.1"
F 7.5"
G 8"
H 9"
J 9.25"
K 9.5"
L 10.5"
M 12.5"
N 13.5"
P 14"
Q 12"
R 162mm
S 6.38"
T 6.7"
U 6"
V 10.6"
W 15.5"
X 142mm
Y 158mm
Z 202mm
- no ring gear = FWD

Second, third digits: gear ratio

01 3.30
02 3.36
03 3.545
04 3.556
05 3.70
06 3.889
07 3.90
08 4.111
09 4.222
10 4.375
11 4.444
12 4.625
13 4.79
14 4.875
15 5.125
16 5.286
17 5.60
18 5.714
19 5.833
20 6.167
21 6.667
22 6.78
23 6.833
24 7.64
25 4.556
26 5.571
27 3.364
28 4.30
29 4.10
30 3.727
31 3.909
32 6.591 or 4.807
33 7.503 or 5.583
34 6.781 or 4.786
35 7.636 or 5.60
36 4.778
37 3.583
38 3.417
39 3.154
40 5.375
41 3.308
42 6.500
43 3.550
44 3.214
45 3.533
46 2.928
47 3.944
48 3.356
49 3.729
50 3.400
51 3.736
52 3.722
53 3.250
54 3.941
55 3.333
56 2.821
57 4.058
58 3.238
59 3.234
60 3.519
61 2.724
62 2.892
63 2.655
64 4.312
65 3.837
66 3.071
67 3.526
68 3.095
69 4.176
70 5.857
71 2.962
72 3.949
73 4.285

Fourth digit: no of pinions, LSD slip-yes/no

Code pinions ls
2 2 no
3 2 yes
4 4 no
5 4 yes

[phrogmodz]

your a legend i just did a search
and found all that info from a
previous topic and emailed it to work
to aid in finding the right hilux diff.
cheers

[wde_bdy]

If its NZ new though then its unlikely to have the diff code on the chassis plate. If it does would be curious to know if its an X code or U code.
I would probably be looking to a 4.1 or 4.3 ratio diff for the 4A depending on what your intended use is.

Callum

[phrogmodz]

yeah nz new - no code
4.1 is what ive been thinking too
but was hoping to find someone who
has done it and can shed some light
on how it id all go.
its gonna be mainly a road car with some
strip and possibly some track

[fangsport]

while on the subject of diff codes, what is the code from your CE71??

[spencer]

If its NZ new though then its unlikely to have the diff code on the chassis plate. If it does would be curious to know if its an X code or U code.
I would probably be looking to a 4.1 or 4.3 ratio diff for the 4A depending on what your intended use is.

Callum

If its a drophatch is it always going to have a U-code? Anyway I would go for a 4.1 or 4.3 as above good thing with hilux diffs is the wide range of ratios. I have collected heaps whenever deals come up, he plans is I can have a 4.5 or 4.7 for the drags/ taupo track etc

[phrogmodz]

not sure on the diff code on the 70
iv been planing to check that for
months and havent got round to it
dont get to the shed its in very often

[wde_bdy]

If its a drophatch is it always going to have a U-code? Anyway I would go for a 4.1 or 4.3 as above good thing with hilux diffs is the wide range of ratios. I have collected heaps whenever deals come up, he plans is I can have a 4.5 or 4.7 for the drags/ taupo track etc

Thats what I'm looking into, every 4K (KP61) drop hatch I have looked at have been U code. But I also know someone with a KP60 (2K) drop hatch who has an X code. Theory is the 2K drop hatch still ran an X code, while the 3K (KP62) and 4K (KP61) were upgraded to the U code.

Callum

[MetalupYoAss]

Im running 4.5:1 hilux with T50, on 195,45,16 wheels, almost identical final drive to ae82 fxgt, does 3550 rpm at 100km so its sweet up thru the gears and sufficient (but not perfect) for motorway cruising

[QikStarlie]

i got the same as above also. had a 4.3 in for a bit before that. not much diffrence

[Peradx]

I run a T50 with a 4.8:1 most of the time but if I want to got fast I'll put in the 5.3:1 thou with the 5.3 the top end is only 160kph , so I'd stay with 4.8:1

[phrogmodz]

thanks guys

[MetalupYoAss]

Transmission calculator

http://www.geocities.com/z_design_studio/

Gearbox ratios

http://www4.tpgi.com.au/users/loats/tec ... boxes.html

[phrogmodz]

that diff code on the ce71 is
s314