[V8Vairs] Corsa Tach Recalibration for a V-8

[Chris Wills]

I have calibrated several Corsa tachs for V8s and have checked them with a frequency meter.  It will be linear at all RPMs.  The pot is adjusted with a small screwdriver with insulating tape wrapped around the shank so you don't short out to the case.

A caution - Corsa the tach doesn't always work with an electronic ignition like the HEI.

Chris Wills


> From: RHargr8188 at aol.com
> Date: Sat, 12 Sep 2009 04:16:55 -0400
> To: v8vairs at corvair.org
> Subject: Re: [V8Vairs] Corsa Tach Recalibration for a V-8
> 
> The stock tach has an adjustment inside accessed through a hole in the back 
>  of the tach and can be calibrated for a V8, I have done several.
> Doug
>  
>  
> In a message dated 9/11/2009 9:04:08 P.M. Pacific Daylight Time,  
> vairmech at aol.com writes:
> 
> 
> I do  remember reading something about tachs a long time ago. I seem to 
> remember  something said about adding a resistor to make the stock tach read 
> correctly.  Can't tell you where I read it, I just remember it.
> 
> 
> 
> 
> 
> Ken  Hand
> 248-613-8586
> www.corvairmechanic.com
> 
> 
> 
> 
> 
> 
> -----Original  Message-----
> From: Paul Siano <paulsiano at yahoo.com>
> To: V-8 Vairs  <v8vairs at corvair.org>
> Sent: Fri, Sep 11, 2009 7:48 pm
> Subject:  [V8Vairs] Corsa Tach Recalibration for a  V-8
> 
> 
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> Has a "How To" article been  written on this subject?
> 
> Thanks,
> 
> Paul
> 
> 
> 
> 
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