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Old 09-20-2019, 10:04 AM
88 PS190 88 PS190 is offline
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Tach Diameter - 94 Prostar

Anyone have their boat around them to confirm the diameter of the tach on a 94 prostar?

Working on getting a new gauge panel made.
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Old 09-20-2019, 11:01 AM
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d2jp d2jp is offline
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My '92 tach measures 3.5" outside edge to outside edge.
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Old 09-20-2019, 01:38 PM
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Miss Rita Miss Rita is offline
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the case on the VDO tach for my '92 measures 3 3/8".
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Old 09-20-2019, 03:35 PM
88 PS190 88 PS190 is offline
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Thanks that jives with what I was thinking the speedos are a bit larger. I had drawn out the center to center dimensions on my paper but neglected to get a diameter - the Teleflex Prism 30310 is listed as 3 3/8ths so that'll confirm what I was thinking.
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Old 09-20-2019, 05:22 PM
waterlogged882 waterlogged882 is offline
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I measured a spare I have. As stated; 3-3/8" dia. on the body.
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Old 09-20-2019, 05:49 PM
88 PS190 88 PS190 is offline
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noice.

I took a scan of the pocket where the gauges sit and am having a buck carved to thermoform the plastic panels that hold the gauges.

Hopefully to have a panel that can just pop in - but the buck will have dimples where each of the round gauges is supposed to be located as well as the screw holes - that will let me just use hole saws.

Probably going to be made out of something a bit more flexible like polyethylene so it doesn't crack with age.
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