Ring size

Joined
Jul 4, 2006
Messages
2,975
Location
Montreal
I was reading my locker manual (RD33) and notice it is written 8.9" on the cover of the manual. What is that 8.9" when i lookup ring and pinion of a landcruiser they talk about 9.5"?
 
Joined
Feb 11, 2004
Messages
1,190
Location
Tampa
Pretty sure it's 9.5.

From Rob Mullen's Cruiser FAQ:

9.1 AXLE CODES
--------------
Axle codes are never located on the axle housings themselves. In trucks
manufacturered after 1976, the axle codes are located on the build plate
which can be found inside the engine compartment. The pinion (and sometimes
the ring gear have the tooth counts (from which the ratio can be calculated)
stamped into them.
Example: K 08 2
^ ^^ ^-2 spider gears
| ++---4.11 ring/pinion ratio
+------9.5" ring gear
First digit: ring gear size
G 8"
J 9.25"
K 9.5"
Second, third digits: ring/pinion gear ratio
(These numbers apply to ALL Toyota vehicles--known Land Cruiser ratios are
indicated)
01 3.30
02 3.36
03 3.545
04 3.556
05 3.70 HD Cruiser, Aftermarket HD Cruiser
06 3.889
07 3.90 HD Cruiser
08 4.111 HD Cruiser, Aftermarket HD Cruiser
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 LD Cruiser, Aftermarket HD Cruiser
26 5.571
27 3.364
28 4.30 LD Cruiser
29 4.10
30 3.727
31 3.909
32 6.591 or 5.583
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
4.88 Aftermarket HD Cruiser
Fourth digit: no of spiders, ltd slip/locker
Code spiders
2 2 open
3 2 LS
4 4 Locking Diff
5 4 LS
 
Joined
Jul 4, 2006
Messages
2,975
Location
Montreal
Pretty sure also but when you look at arb web site they refer to 8.9", i don't know what that stands for.
 
Joined
Feb 6, 2002
Messages
15,313
Location
OC, CA
They are both right.
They are 9.5 inches across the teeth side and 8.9 inches across the base mounting surface.
 

Josie'sLandCruiser

Stop calling it a "FJ."
Joined
Feb 4, 2005
Messages
5,222
Location
Seattle, USA
Hi All:

ARB has changed their Air locker part numbers over the last few years, consolidating several models into one. so, the old RD02, RD08, and RD33 models are now all covered under the RD124 model.

The Rd02 was for 40/55/60/70 Series full-floating axles; the RD08 was for 40/55/60/70 Series semi-floating rear axles; and the RD33 was for the full-floating rearend in the FZJ80 (HZJ80 as well, I assume?)

Regards,

Alan

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I was reading my locker manual (RD33) and notice it is written 8.9" on the cover of the manual. What is that 8.9" when i lookup ring and pinion of a landcruiser they talk about 9.5"?
 

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