Differential information

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Gearbox, Differential and Transfer Box Ratio Information

Date Country Engine Gearbox Gear 1 Gear 2 Gear 3 Gear 4 Gear 5 Transfer Box High Low Final Drive
1998 UK/EU G13B Manual 3.652 1.947 1.423 1.000 0.864 Manual 1.320 2.145 3.909
1998 UK/EU G13B Auto 2.962 1.515 1.000 0.738 N/A Manual 1.320 2.145 4.090
2001 UK/EU M13A Manual

3.652?

1.947?

1.423?

1.00

0.864?

Manual 1.32 2.145 3.909
2001 UK/EU M13A Auto

2.962?

1.515?

1.000?

0.738?

N/A Manual 1.32 2.145 4.090
2005+ UK/EU M13AVVT Manual 4.425 2.304 1.674 1.190 1.000 Electric 1.00 2.002 4.300
2005+ UK/EU M13AVVT Auto 2.875 1.568 1.000 0.695 N/A Electric 1.32 2.643 4.090
2005+ EU K9K Manual 4.246 2.357 1.695 1.242 1.00 Electric 1.00 2.002 3.416
2000 JP K6A Manual 4.031 2.391 1.513 1.00 0.790 Manual 1.320 2.145 5.375
2000 JP K6A Auto 2.902 1.515 1.00 0.736 N/A Manual 1.320 2.145 5.375
2010 JP K6A Manual 5.106 3.107 1.908 1.254 1.000 Manual 1.320 2.643 4.300
2010 JP K6A Auto 2.875 1.568 1.000 0.696 N/A Electric 1.320 2.643 5.375

See below for some worked examples:

2005 VVT manual gearbox Jimny, engine at 4000 RPM and in 5th gear High Ratio, standard wheels

Engine Gearbox Transfer Box Diff Wheel
Input -------- 4000 RPM 4000 RPM 4000 RPM 465 RPM
Ratio -------- 1.000 1.000 4.300 28" Tyre
Output 4000 RPM 4000 RPM 4000 RPM 465 RPM 77.7 MPH
2001 M13A manual gearbox Jimny, engine at 3000 RPM and in 1st gear Low Ratio, 30" Tyres
Engine Gearbox Transfer Box Diff Wheel
Input ------ 3000 RPM 821.4 RPM 382.9 RPM 97.97 RPM
Ratio ------ 3.652 2.145 3.909 30" Tyre
Output 3000 RPM 821.4 RPM 382.9 RPM 97.97 RPM 8.7 MPH

2001 M13A manual gearbox Jimny, engine at 3000 RPM and in 1st gear Low Ratio, 30" Tyres with Differential from later VVT

This shows an example of a modified diff with an increase reduction ratio

Engine Gearbox Transfer Box Diff Wheel
Input ------ 3000 RPM 821.4 RPM 382.9 RPM 89 RPM
Ratio ------ 3.652 2.145 4.3000 30" Tyre
Output 3000 RPM 821.4 RPM 382.9 RPM 89 RPM 7.9 MPH

Note: For the tyre/road speed calc you can use your maths from school or a web calculator - www.4qd.co.uk/road-speed-calculator/---- Page last edited on 16/01/2018 by user Mlines