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pizza connoisseur
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900 Posts
Discussion Starter · #1 ·
What would be the best way to enlargen the speedo and Tach holes to accept 5" gauges??




picture was for fun
 

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Junior Charter Member
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1,879 Posts
A trick I've used on boat instruments is to clamp the existing panel onto a sheet of plywood, find the center of the hole and use a hole saw to make the cut. The pilot hole of the saw- the drill bit- just bores into the plywood while the saw cuts the larger diameter hole in the panel.

Best of luck!
 

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Junior Charter Member
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912 Posts
If you have a pre cut dash, FFR has CNC'd preferations (sp?) around the tach and speedo holes to be enlargened to accept bigger dia. speedo and tach. Simply break off at the preferations to enlargen the holes. Your tach and speedo may fit loosely in the holes, but will be tightened when you cover the dash with the vinyl padded dash cover.
 

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pizza connoisseur
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900 Posts
Discussion Starter · #6 ·
Thanks! with an existing hole I was wondering how a hole saw would center itself correctly but wood behind it is an obvious answer I didnt think about
Well back to work.
 
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