Differential ratios Fj vs Bj

[BigBlackCruiser]

Hi, so I now own an ‘84 FJ40 (from Brunei) and an ‘82 BJ42 (from France). The French car is being used as a donor vehicle.

I was just wondering what the ratios are on the front axle? I’m hoping they’re the same so I can swap them.

Cheers guys

 

[Living in the Past]

VIN plaque on the firewall should have that information. 4.11 and 3.70 are the most commonly are what were installed at the factory. Diesel may be different than petrol.

 

[BigBlackCruiser]

Cheers mate!

 

[-MaTTi-]

I have euro spec 1981 BJ42, the plate says K082 = 4.11:1

 

[vikor]

hi,

pinion gear
for the FJ 40= 10 teeth

for BJ40 and BJ 42 = 9 teeth

for all same ring gear with 37 teeth

caution: used the same ratio on the front and rear axe