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Thread: Elec vs Mech Speedo
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02-18-2009 #1
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- May 2005
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- Rolla, MO
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Elec vs Mech Speedo
I am looking at going with a Covan's dash for my TA and was wondering if there was an electric speedo had a huge advantage over a mechanical?
I am going with Autometer's and like the Z series best at this time but have not made a final choice and an electric speedo is not an option.
While we are talking gauges, why do vaccuum gauges rotate counterclockwise? This seems real backwards to me.
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02-18-2009 #2
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- Jul 2006
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- Hackettstown, NJ
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vacuum gauges are nothing more than pressure gauges. when there is vacuum the gauge rotates CCW b/c there is less pressure. Under boost or acceleration the gauge rotates CW b/c there is less vacuum in the engine.
the only benfit I see in electrical speedo is possibly a more accurate reading and teh benefit (for some manufs) to calibrate them easily. If you have VSS in your tranny good, but if you are running a cable to an electrical speedo, why bother. Redline gauges will convert your stock T/A speedo to elec if you are interested. 250-3 for speedo and about 500 for tach and speedo.
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