Andy Mace wrote,
>> To be sure, though, raise the rear of the car and place it on stands.
Temporarily stop one rear wheel from moving (have someone hold it, or
tighten the brake adjuster). Slowly turn the free wheel through one
revolution while someone counts the revolutions of the driveshaft at the
input flange of the rear axle (you could chalk or otherwise mark the
flange to make the counting easier). If the flange/driveshaft turns just
under four times, it's 3.7; if just over four times, it's 4.1. <<
Actually, with the opposite wheel immobilized the drive shaft will spin
twice as fast. 7.4 turns if the axle ratio is 3.7, or 8.2 if it's a 4.1.
You can stop one wheel from turning by leaving it on the ground, i.e.
just jack up one side. But don't go under the car like that! If you
can't count driveshaft rotations without going underneath, _please_ put
the car on stands and use one of Andy's methods for stopping the
opposite wheel.
BK
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