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post #1 of (permalink) Old 11-17-2002, 09:58 PM Thread Starter
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Gear ratios vs. tires

I have two sets of tracker diffs. and am going to make a hybred rear diff. I plan on putting the front tracker third member into the front sammy housing.
One is 5.1 - 1and the other is 4.6 - 1.
I am running a stock t-case and want to put 31" or possibly 33" tires on it.
What ratio gears in diffs will correct for 31" tires?
What ratio gears in diffs will correct for 33" tires?
AkDale is offline  
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post #2 of (permalink) Old 11-18-2002, 08:48 AM
 
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Re: Gear ratios vs. tires

Akdale,

I have an Excel spreadsheet that can calculate all of that. You would start with stock to see
where the RPM's should be, then play "what if" with tires, Xfers, trannys and gears. It even
has a converter for P metric tires, and most every gearing reference available to the zuks,
all that I have found anyway. You can also put in any other gearing you want to (Toy?)

It all feeds a graph for all 5 (4?) tranny gears.

You can download it from my Off Road Tech Yahell group:

http://groups.yahoo.com/group/offroadtech/

Its in Files under tech spreadsheets

Intstructions are in it.
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post #3 of (permalink) Old 11-18-2002, 10:27 AM
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Re: Gear ratios vs. tires

If your's is stock with 3.73's the 4.62's will be about right with the 33's as far as stock figureing goes. Most likely tho you'll be happier with the 5.13's overall. Just my opinion.
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post #4 of (permalink) Old 11-18-2002, 10:57 AM
 
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Re: Gear ratios vs. tires

I have always known that 4.56 will correct 31's nice and the 5.13's will correct 33's nice so I dunno.
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