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Hewland MK 5 RATIOS

Ratios Layshaft Options
Part Number
Standard gears
Part Number
2nd gears (hubbed)
Description Ratio
MK5-14:31-STD   RATIO 2.214
  MK5-16:35-2ND RATIO 2.188
MK5-16:34-STD MK5-16:34-2ND RATIO 2.125
MK5-13:27-STD MK5-13:27-2ND RATIO 2.077
MK5-15:30-STD MK5-15:30-2ND RATIO 2.000
MK5-14:27-STD MK5-14:27-2ND RATIO 1.929
MK5-18:34-STD MK5-18:34-2ND OBSOLETE RATIO USE 14:26 1.889
MK5-14:26-STD MK5-14:26-2ND RATIO 1.857
MK5-18:33-STD MK5-18:33-2ND OBSOLETE RATIO 1.833
MK5-15:27-STD MK5-15:27-2ND RATIO 1.800
MK5-18:32-STD MK5-18:32-2ND OBSOLETE RATIO USE 17:30 1.778
MK5-17:30-STD MK5-17:30-2ND RATIO 1.765
MK5-15:26-STD MK5-15:26-2ND RATIO 1.733
MK5-17:29-STD MK5-17:29-2ND RATIO 1.706
MK5-15:25-STD MK5-15:25-2ND RATIO 1.667
  MK5-19:31-2ND RATIO 1.632
MK5-16:26-STD MK5-16:26-2ND RATIO 1.625
MK5-17:27-STD MK5-17:27-2ND RATIO 1.588
MK5-16:25-STD MK5-16:25-2ND RATIO 1.563
MK5-17:26-STD MK5-17:26-2ND RATIO 1.529
MK5-16:24-STD MK5-16:24-2ND RATIO 1.500
MK5-17:25-STD   RATIO 1.471
MK5-16:23-STD   RATIO 1.438
MK5-19:27-STD   RATIO 1.421
MK5-18:25-STD   RATIO 1.389
MK5-19:26-STD MK5-19:26-2ND RATIO 1.368
MK5-18:24-STD   RATIO 1.333
MK5-19:25-STD   RATIO 1.316
MK5-20:26-STD MK5-20:26-2ND RATIO 1.300
MK5-21:27-STD   RATIO 1.286
MK5-22:28-STD   RATIO 1.273
MK5-19:24-STD   RATIO 1.263
MK5-21:26-STD   RATIO 1.238
MK5-18:22-STD   RATIO 1.222
MK5-19:23-STD   RATIO 1.211
MK5-21:25-STD   RATIO 1.190
MK5-23:27-STD   RATIO 1.174
MK5-24:28-STD   RATIO 1.167
MK5-19:22-STD   RATIO 1.158
MK5-21:24-STD   RATIO 1.143
MK5-22:25-STD   RATIO 1.136
MK5-24:27-STD   RATIO 1.125
MK5-19:21-STD   RATIO 1.105
MK5-24:26-STD   RATIO 1.083
MK5-18:19-STD   RATIO 1.056
MK5-25:26-STD   RATIO 1.040
MK5-24:24-STD   RATIO 1.000
MK5-26:25-STD   RATIO 0.962
MK5-26:24-STD   RATIO 0.923
MK5-27:24-STD   RATIO 0.889
Mk9 Gearbox
Part Number Description Ratio
MK5-13:38-INT LAYSHAFT & INT 1ST 2.923
MK5-12:33-INT LAYSHAFT & INT 1ST 2.750
MK5-12:31-INT LAYSHAFT & INT 1ST 2.583
MK5-12:29-INT LAYSHAFT & INT 1ST 2.417

NST Gearbox
and Dallara F3 Gearbox from 1994
Part Number Description Ratio
F3A-13:38-INT LAYSHAFT & INT 1ST 2.923
F3A-12:33-INT LAYSHAFT & INT 1ST 2.750
F3A-12:31-INT LAYSHAFT & INT 1ST 2.583
F3A-12:29-INT LAYSHAFT & INT 1ST 2.417
F3A-13:30-INT LAYSHAFT & INT 1ST 2.308
F3A-14:31-INT LAYSHAFT & INT 1ST 2.214

 

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