My tires and wheels are stock size. The tranny is a side-shift conversion. The speedometer is a 120mph VDO (I have no reason to believe that it isn't the original).
When my speedometer reads 60mph, I'm actually doing closer to 52mph. It's a little tough to tell if it's off by a consistent percentage at all speeds or if it gets worse the higher the speed, but...
Any ideas as to what could cause this?
Oh… one more thing… the little knob below the dash… it’s meant to reset the trip odometer, right? Mine will spin the trip odometer and the odometer. I’m I correct that the odometer is malfunctioning? (Anyone want to buy a 914 with let's make it 34,000 original miles? )