Transmission gearing ratios

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Revision as of 15:21, 12 January 2018 by Mlines (talk | contribs) (Added in worked examples)
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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

Gearbox input = 4000 RPM

Gearbox ratio = 1

Gearbox output = 4000 RPM

Transfer box input =4000 RPM

Transfer box ratio = 1

Transfer box output = 4000 RPM

Diff input = 4000 RPM

Diff ratio (final drive) = 4.3

Diff output = 465 RPM

Wheel input = 465 RPM

Wheel diameter = 28 inches

Road speed = 77.7 miles per hour

2005 VVT manual gearbox Jimny, engine at 3000 RPM and in 1st gear Low Ratio

Gearbox input = 3000 RPM

Gearbox ratio = 4.425

Gearbox output = 678 RPM

Transfer box input =678 RPM

Transfer box ratio = 2.002

Transfer box output = 338.6 RPM

Diff input = 338.6 RPM

Diff ratio (final drive) = 4.300

Diff output = 78.5 RPM

Wheel input = 78.5 RPM

Wheel diameter = 28 inches

Road speed = 1.5 miles per hour

Note: For the 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 12/01/2018 by user Mlines