Re: what does alex ratio mean and how do you read it?
RPM is crank shaft & is measured in the old days by a flexible shaft off a distributor drive fitting. Today its measure electronically off the ignition & has nothing to do with anything past the transmission input shaft.
The Ratio is read pinion gear rotation verses wheel rotation 3.00 to 1 is three pinion gear rotation to 1 rear wheel rotation.
If you lost the differential tag or can't convert the factory casting code; jack the rear wheels up off the ground & make a chalk mark on it.
Then make a chalk mark on the drive shaft. Rotated the drive shaft & count the revolutions to get one full wheel rotation. On a 3.00 to 1 you will turn the drive shaft three times for the wheel to turn once.
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Kevin
1998 3.0 4X4 5MT Splash Box- 2014 435iM-Sport - 2013 BMW 135is convt - 2009 Ford Expedition 4X4 EL - 1965 FFR Cobra - 2016 Genesis R-Spec coupe - 2017 Mazda CX5GT AWD .
Last edited by BEAR257; 03-25-2012 at 10:08 AM.
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