Speedometer Calibration?

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05-06-03, 09:46 PM

CarmonColvin

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Speedometer Calibration?

Any clue how to adjust the speedometer of an FC to compensate for lower gears?

I have 4.33 LSD gears I want to put into my street car but I also want the speedometer to be accurate. Does anybody sell adjusting gears for the speedo cable?

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05-06-03, 10:00 PM

nashman69g

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just pull the gear out of the tranny on a GTUs or find someone on the forum...see if rotary resurrection has one!!

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05-06-03, 10:38 PM

Snrub

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Icemark posted this link a while back:
http://members.ij.net/mrmazda/speedo.html

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05-07-03, 12:08 AM

Wankel7

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Kinda random....but I saw a GPS speedometer for sale in Sports Car magazine. That would be better then the stock speedo

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05-07-03, 02:50 PM

mazdaspeed7

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Buy bigger tires... One of my friends has 245 45 16's with 4.33 gears, and his speedo is dead on.

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05-07-03, 03:59 PM

rotary>piston

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yeah, but bigger total wheel/tire diameter cancels out the acceleration benefits of narrower gears.
I'd say just memorize the percent off and drive like that, not worth the effort IMOto change speedo gears.