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How to find my diff ratio
Moderators: toaddog, Elmo, DUDELUX
How to find my diff ratio
Looking to find what ratio my rear diff is. Car only recently bought so have no idea if it is an original diff or not. It is in a 1985 Hilux dual cab diesel. Cheers
Or you just look at this
http://www.rsmotorsport.com.au/technica ... _Hilux.pdf
Or off Pirate4x4
Originally posted by TNToy
----------------------------------------------------
If you have the axle code of your vehicle, it is easy to find out what size differential, what ratio, and what pinion set-up you have. This will also help if you are hunting for a particular unit off another vehicle. The axle code is in the vehicle ID plate under the hood or drivers door. The axle code is 4 digits: a letter followed by 3 numbers.
Example: G292 = 8.0" 4.10 final ratio 2 pinion
Code:
1ST R&P SIZE 2nd/3rd R&P RATIO 4th DIGIT PINION SET-UP
F = 7.5" 07 = 3.900 2 = 2 pinion
G = 8.0" 08 = 4.110 3 = 2 pinion LSD
10 = 4.375 4 = 4 pinion
14 = 4.875 5 = 4 pinion LSD
25 = 4.556
28 = 4.300
29 = 4.100
31 = 3.91
38 = 3.42
43 = 3.56
54 = 3.90
66 = 3.07
.
.
Code:
Ratio Ring/Pinion Color Crawl:Ratio
3.42 ...42/12... Purple ...31:1
3.90 ...39/10... Red... ...36:1
4.10 ...41/10... Pink.. ...37:1
4.11 ...37/09... Orange ...37:1
4.30 ...43/10... Blue.. ...39:1
4.37 ...35/08... Green. ...40:1
4.56 ...41/09... Yellow ...41:1
4.88 ...39/08... White. ...44:1
5.29 ...37/07... None.. ...48:1
5.71 ...40/07... None.. ...51:1
http://www.rsmotorsport.com.au/technica ... _Hilux.pdf
Or off Pirate4x4
Originally posted by TNToy
----------------------------------------------------
If you have the axle code of your vehicle, it is easy to find out what size differential, what ratio, and what pinion set-up you have. This will also help if you are hunting for a particular unit off another vehicle. The axle code is in the vehicle ID plate under the hood or drivers door. The axle code is 4 digits: a letter followed by 3 numbers.
Example: G292 = 8.0" 4.10 final ratio 2 pinion
Code:
1ST R&P SIZE 2nd/3rd R&P RATIO 4th DIGIT PINION SET-UP
F = 7.5" 07 = 3.900 2 = 2 pinion
G = 8.0" 08 = 4.110 3 = 2 pinion LSD
10 = 4.375 4 = 4 pinion
14 = 4.875 5 = 4 pinion LSD
25 = 4.556
28 = 4.300
29 = 4.100
31 = 3.91
38 = 3.42
43 = 3.56
54 = 3.90
66 = 3.07
.
.
Code:
Ratio Ring/Pinion Color Crawl:Ratio
3.42 ...42/12... Purple ...31:1
3.90 ...39/10... Red... ...36:1
4.10 ...41/10... Pink.. ...37:1
4.11 ...37/09... Orange ...37:1
4.30 ...43/10... Blue.. ...39:1
4.37 ...35/08... Green. ...40:1
4.56 ...41/09... Yellow ...41:1
4.88 ...39/08... White. ...44:1
5.29 ...37/07... None.. ...48:1
5.71 ...40/07... None.. ...51:1
'89 Hilux Single Cab - 3RZ, 35" Kreepy Krawlers, 4.88's, F & R Air lockers, RUF, Longfields, TG Highsteer, Highmount and no money
What are the last 3 numbers/letters on the trans/axle plate.
Weiner has given you all the info you need, being a 85 model deisel it will be 4.3 or 4.5
Mine were 4.5s til i went 4.88's, and mine was a 84 diesel dual cab, with 31's standard according to the trans/axle code's.
Weiner has given you all the info you need, being a 85 model deisel it will be 4.3 or 4.5
Mine were 4.5s til i went 4.88's, and mine was a 84 diesel dual cab, with 31's standard according to the trans/axle code's.
BBP Offroad
Boondall Backyard Performance
They call me the MR. throw cash at shiz til its comp specccccc
Boondall Backyard Performance
They call me the MR. throw cash at shiz til its comp specccccc
It will be a 4.56 if its still the stock centre.
You do not have to pull the centre out to check it if your unsure on it ever being changed. Jack one wheel up. Put a mark on the pinion flange. Now turn the wheel one full rotation. While doing this count how many rotations the pinion does. Then multiply it by two. That will give you the ratio.
You do not have to pull the centre out to check it if your unsure on it ever being changed. Jack one wheel up. Put a mark on the pinion flange. Now turn the wheel one full rotation. While doing this count how many rotations the pinion does. Then multiply it by two. That will give you the ratio.
If you only rotate the tyre once you need to multiply the pinion by 2. Unless the vehicle is fitted with a spool or locker and its locked.80's_delirious wrote:mark the pinion flange, and mark the tyre. Have someone rotate the tyre one full turn and watch the pinion and count how many times it turns,
eg 4 1/2 turns + 4.5:1, 4 1/3 turns + 4.3:1 almost 5 turns probably 4.88:1
Finally someone got it right......RUFF wrote:It will be a 4.56 if its still the stock centre.
You do not have to pull the centre out to check it if your unsure on it ever being changed. Jack one wheel up. Put a mark on the pinion flange. Now turn the wheel one full rotation. While doing this count how many rotations the pinion does. Then multiply it by two. That will give you the ratio.
Show me the money..SHOW ME THE MONEY
Both are differentone_waz wrote:can someone tell me, out of all the hilux ratios 4.3 4.5 4.8 etc is the tooth count on the pinion the same and just the ring that is different? or do they both change?
cheers
'89 Hilux Single Cab - 3RZ, 35" Kreepy Krawlers, 4.88's, F & R Air lockers, RUF, Longfields, TG Highsteer, Highmount and no money
Yes, its more accurate to rotate the tyre twice rather than multiplying the pinion.RUFF wrote:If you only rotate the tyre once you need to multiply the pinion by 2. Unless the vehicle is fitted with a spool or locker and its locked.80's_delirious wrote:mark the pinion flange, and mark the tyre. Have someone rotate the tyre one full turn and watch the pinion and count how many times it turns,
eg 4 1/2 turns + 4.5:1, 4 1/3 turns + 4.3:1 almost 5 turns probably 4.88:1
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