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Old 06-21-2011, 10:23 PM   #1

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Location: Connecticut
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Finaly replaced speedo gear!!

Compared to GPS my odometer is now accurate.
My jeep came stock with 28" tires and a 30 tooth gear from the factory. I wasn't sure what gear to go with because some say the 28 tooth would be right if one does the math.
I have 31" tires so I got a 27 tooth short shaft. I ordered it from Quadratec, Mopar still does not make a 27 short shaft speedo. I have driven 43.2 miles and my GPS is at 43.18 miles, pretty dam close.

Anybody know the percentages as far as the tooth count? Wondering how many miles my jeep should have. I have been driving with the factory gear for 8 years

Going to more accurate figuring out my gas mileage also


2007 Rubicon/Rock Krawler triple rate 2.5" coils/RK rear TB w/ a teraflex raised bracket/Rancho 9000 31/32XL shocks/Synergy flipped draglink,ball joints,tie rod /Hankook MT 315-75-16 on Level 8 ZX's/Rancho geo brackets/Ruff stuff uppers/Fox ATS stabilizer/Adams front DS/Artec front armor w/ Currie upper bushings/Rancho cat back exhaust.

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