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Jimny Final Drive and Transfer Box Ratios
- darthloachie
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28 Aug 2014 19:32 #122894
by darthloachie
That's because the jimny transfer box is a weak point as it is chain driven rather than gears
Replied by darthloachie on topic Jimny Final Drive and Transfer Box Ratios
Kirby wrote: You are correct Brave.
Anyone with a Manual non VVT can upgrade to the manual VVT diffs without spending lots on a transfer box. I was just curious as to why noone opts for that option.
That's because the jimny transfer box is a weak point as it is chain driven rather than gears
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- irishguy123
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29 Aug 2014 20:33 #122958
by irishguy123
Replied by irishguy123 on topic Jimny Final Drive and Transfer Box Ratios
I'm surprised that this doesn't happen also. Regearing the final drives seems to be popular amongst wrangler owners for example.
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- irishguy123
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29 Aug 2014 21:36 #122968
by irishguy123
Replied by irishguy123 on topic Jimny Final Drive and Transfer Box Ratios
Doing some quick sums on this:
235/75 15 is realistically the largest size of tyre I would want to run on my 2002 manual...
using the formula:
Old Gear Ratio × New Tire Size ÷ Old Tire Size = New Gear Ratio.
3.909 x 733.5 ÷ 668 = 4.29229
So using manual VVT jimny diffs (4.3) would return the gearing to factory spec.
Now I understand that rocklobsters are a great bit of kit but Im guessing a set of diffs could be picked up for 1/6 of the price?
235/75 15 is realistically the largest size of tyre I would want to run on my 2002 manual...
using the formula:
Old Gear Ratio × New Tire Size ÷ Old Tire Size = New Gear Ratio.
3.909 x 733.5 ÷ 668 = 4.29229
So using manual VVT jimny diffs (4.3) would return the gearing to factory spec.
Now I understand that rocklobsters are a great bit of kit but Im guessing a set of diffs could be picked up for 1/6 of the price?
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- Brave
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30 Aug 2014 02:28 #122974
by Brave
Replied by Brave on topic Jimny Final Drive and Transfer Box Ratios
Also lowering the diff ratio will help reduce stress through the transmition though it will increase stress in the axle. How tough are the axles in the jimny?
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