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What diff gears do i have?

Tech Talk for Nissan owners.

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mike_nofx
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What diff gears do i have?

Post by mike_nofx »

I have searched google, and cant seem to find a definate answer,

Its a 1990 4.2 carbi, Auto. What should stock diff gearing be?

Thanks
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gears

Post by purplebus »

have a look at the plate on the firewall in front of the driver so to speak. in the bottom rhs will be a number diff/trans/axle code eg 41**, 39**,43** etc. it will be under the eng size/ capacity on plate from memory. the first 2 digits are the ratio so to speak. good luck. if you are changing a centre just make sure it is stamped the same as the one that has been replaced before you fit or kabooooom.
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Post by big red »

3.9 or 4.1 depending on model and trans

mines a 1990 ford maverick base model manual and its 3.9:1

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Post by hokey »

count how many times the tailshaft turns to one revolution of the tyres. gives you the ratio
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mike_nofx
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Post by mike_nofx »

hokey wrote:count how many times the tailshaft turns to one revolution of the tyres. gives you the ratio
Can you tell the difference between 3.9 and 4.1 like this?

Anyway, i checked under the bonnet and have HG39, so 3.9...

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Post by RED60 »

hokey wrote:count how many times the tailshaft turns to one revolution of the tyres. gives you the ratio
No it doesn't...... unless you have a locker and it's engaged when you do the test...
Last edited by RED60 on Tue Mar 23, 2010 11:19 pm, edited 1 time in total.
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Post by RED60 »

mike_nofx wrote:
hokey wrote:count how many times the tailshaft turns to one revolution of the tyres. gives you the ratio
Can you tell the difference between 3.9 and 4.1 like this?

Anyway, i checked under the bonnet and have HG39, so 3.9...

Thanks
As long as the centre/s haven't been changed between manufacture and now.....
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