Speedometer Question (General)

[Kurt Nolte]

It involves an Audi part, so I figured it appropriate for the Audi list.

I have a 5000 TD gauge cluster that I'm planning to install as part of 
my conversion from gas to diesel in an 86.5 Quantum Syncro. I already 
have plans in place to rearrange everything so the three-gauge cluster 
will fit in the two-gauge Quantum, but... I need to know if the 
speedometers are compatible.

Are there different internal gearings for different differential ratios, 
thus making speedometer swaps a tricky business that will require a 
custom cable? The Syncro has a 4.11:1 where the 5k TD I think had a 
4.5:1 (Correct me if I'm wrong).

Does "speedometer ratio" merely indicate relationship of transmission 
output RPMs to cable RPMs? I'm not sure how all this works, so I ask.

-Kurt

		
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