Is a 4.90 ratio 'close enough' to a 4.875 to not be damaging a transfer case?
Most of my driving is on softer surfaces. The higher ratio (4.875) would be in the rear.
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Diff Ratio variation
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Diff Ratio variation
1994 NJ SWB, 3.5, 5 speed manual, 33's, XD9000, 4.9 diffs, Front & Rear ARB's, Safari Snorkel
2008-2009-2010-2011 Pavlova in the shed.
2008-2009-2010-2011 Pavlova in the shed.
The difference between 4.875 and 4.90 is approximately half of one percent.
If you're running 33" tyres, that's equivalent to 4.3mm in overall diameter, or just over 2mm in radius.
What's your tread depth? 10mm? You'll get a bigger difference if you run new tyres on one axle, and 30% worn on the other.
Just do it.
If you're running 33" tyres, that's equivalent to 4.3mm in overall diameter, or just over 2mm in radius.
What's your tread depth? 10mm? You'll get a bigger difference if you run new tyres on one axle, and 30% worn on the other.
Just do it.
Should be fine.
Ford ran 4.10 in one end and 4.09 in the other in stuff for years and years from the factory.
You might not want to use 4WD high range on hard packed surfaces though (and why would you?) you might find a bit of bind that makes it hard to get out of 4WD.
Steve.
Ford ran 4.10 in one end and 4.09 in the other in stuff for years and years from the factory.
You might not want to use 4WD high range on hard packed surfaces though (and why would you?) you might find a bit of bind that makes it hard to get out of 4WD.
Steve.
[quote="greg"] some say he is a man without happy dreams, or that he sees silver linings on clouds and wonders why they are not platinum... all we know, is he's called the stevie.[/quote]
Thanks guys, when you put it into perspective like that its pretty darn close.
If it is onto harder surfaces the centre diff would absorb any differences anyway when in full time 4wd unlocked.
If it is onto harder surfaces the centre diff would absorb any differences anyway when in full time 4wd unlocked.
1994 NJ SWB, 3.5, 5 speed manual, 33's, XD9000, 4.9 diffs, Front & Rear ARB's, Safari Snorkel
2008-2009-2010-2011 Pavlova in the shed.
2008-2009-2010-2011 Pavlova in the shed.
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