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Showing results for tags 'diff rear axle'.
Hi Doing a full restoration on my mk3 non rotoflex with overdrive, removed diff from chassis and done first clean up. There is red paint on the input drive hub castellated nut and KC73323 stamped into the casing. I am being told that it is a 3.27:1 diff not the 3.89:1 which it should have with a KD stamp and blue paint so clearly the car has had an overdrive unit fitted or diff replaced with a different unit. I am told this will result in less acceleration but more comfortable cruising both of which are fine with me, but I wondered if anybody else has had a car with this configuration and their thoughts on its drivability? Doing some preliminary checks, when you start to rotate the input shaft very slowly one of the half shaft flanges start to turn and the other does not, I would imagine this is down to backlash on the sun / planet gear(s)? If I then increase the speed both half shaft flanges turn normally, then go back to turning very slowly as before both half shaft flanges continue to turn? Appreciate any thoughts / checks to do before I open the unit up.