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I have a diff centre out of a 73 Luv, it has 41 teeth on the crown wheel and 8 on the pinion. What is this ratio?

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1980 4x4 KBD40 ISUZU/Chev Luv
Factory Fitted c190 Diesel Engine, ARB BullBar, Ramsey Winch, Custom Tilt Tray,

Divide the drive into the driven.

5.125 : 1

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Certified pilots, looking down on people since 1903.

Is 5.125:1 a factory fitted ratio

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1980 4x4 KBD40 ISUZU/Chev Luv
Factory Fitted c190 Diesel Engine, ARB BullBar, Ramsey Winch, Custom Tilt Tray,

513s in a luv center chunk?!?!

dang!

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"but its that gut feeling of you're drawn to what feels right for yourself and what you're passionate about..."

This diff was fitted to a 73 2wd 3speed gas eng luv i drove it before i stripped it, it was'nt slow on the road or reved high

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1980 4x4 KBD40 ISUZU/Chev Luv
Factory Fitted c190 Diesel Engine, ARB BullBar, Ramsey Winch, Custom Tilt Tray,

All I had ever heard about Isuzu 10 bolt diff gear ratios below 4.56 was 5.38s, usually found in some kind of van not sold in the US. That would be 43 teeth on the ring gear and 8 on the pinion. Could that have been a mismatched gear set? Seems like that wouldn't even work, but I've seen prior owners do some crazy things.

A 3 speed? Another thing we didn't have over here, unless you are talking about an automatic tranny or talking about a manual gearbox with a low low gear and then 1-3.

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95 Isuzu Trooper Daily Driver
86 Isuzu Trooper reliable backup
77 LUV 2wd stock beltway blaster (resting)
79 4x4 LUV project: 2.6L, 5spd, 31s (eventually)

MEPR: Man, my 4x4 makes all other LUVs look good

It was a 3 speed manual clutch pedal on floor shiter on steering coloum must be Australian only

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1980 4x4 KBD40 ISUZU/Chev Luv
Factory Fitted c190 Diesel Engine, ARB BullBar, Ramsey Winch, Custom Tilt Tray,

Was going to fit the diff to my 1980 diesel 4x4 Luv but will give it a miss its got 4.555:1 ratio in it now won't go faster than 90 kmhr

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1980 4x4 KBD40 ISUZU/Chev Luv
Factory Fitted c190 Diesel Engine, ARB BullBar, Ramsey Winch, Custom Tilt Tray,

No good fitting it in a 4x4. The front diff is different and the transfer gear will go POP.

Ive never heard of a 3 speed.
Sounds a bit queer to me. Better take me a pic these things interest me.


That would be the WFR van 800xl. They also came in a 4x4 (WFS) version. Never saw that downunder.
Ive got factory workshop manuals here; 194mm 7.64" Isuzu diffs;

WFR Bus

The 41/8 5.125 was in the WFR10D that had the 1.6L 4ZA1 motor.

41/9 4.555 in most of them

43/9 4.777 in the one with the big diesel motor. (didnt get that down here either) and WFR Shuttle bus with an auto [4spd AW03-72L] trans.



KB21-KB29 Luv Pup and pickup. Diesel and Petrol.

4.555 if it was 1 ton.

41/10 4.100 if it was 0.5 ton

It does say in the 82 model book, Gas powered with G180Z has 4.1. Maybe it was a sports model and 500KG the ratio was in brackets.

Trooper ~88

4.555
But this had bigger tyres remember.

Impulse/Piazza

43/11 3.909
This had smaller tyres. 195/60/14 same rolling diameter as the I-mark.
Im upping the tyre size on my Piazza and im thinging about building up a 4.1 LSD to put in it.



Didnt some one say about the auto Luv. Wasnt it 4.3. We didnt get that here.

The 4.3 ratio was used in the 88~ pickup/trooper. These had the 220mm diff in the back but in the 4x4 they had the 194mm diff in the front.
You could mix and match, swap front to back i assume.


Thats about all the light i can shed.


Cheers, Bob.

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Current project, 1979 KB Isuzu Ute.

Daily driver, '86 Rodeo Spacecab.
Chasing parts for Isuzu Impulse.

I've heard gears from the front 10 bolt (194mm) Isuzu axle will not fit in a rear. As I've heard it, the ring gear is thicker and the pinion is offset in the front end design. The carriers are the same, so a rear LSD will fit in a front diff, but the gears are not interchangable. I have not seen both sets out and in person though.

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95 Isuzu Trooper Daily Driver
86 Isuzu Trooper reliable backup
77 LUV 2wd stock beltway blaster (resting)
79 4x4 LUV project: 2.6L, 5spd, 31s (eventually)

MEPR: Man, my 4x4 makes all other LUVs look good

Could be true ive never had a good hard look at em either.


Bob

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Current project, 1979 KB Isuzu Ute.

Daily driver, '86 Rodeo Spacecab.
Chasing parts for Isuzu Impulse.