[V8Vairs] Corsa Tach in a V-8

[paulsiano at aol.com]

Doug, thanks for responding.  Your answer was correct for my non-HEI situation. 
 
Paul






-----Original Message-----
From: RHargr8188 <RHargr8188 at aol.com>
To: v8vairs <v8vairs at corvair.org>
Sent: Sat, Sep 18, 2010 12:18 pm
Subject: Re: [V8Vairs] Corsa Tach in a V-8


This has been discussed before, but I agree with Craig, I've calibrated my  
ack on the bench using a frequency counter and generator and it tracks the 
PM  as you would expect. This has been confirmed by others who have 
alibrated  their Corsa tack.  If you are using a HEI system which could have  
mine does) a high voltage tack signal you should place a 1.2K 1/2 watt  
esistor in series with the tack signal. This higher signal may be the  reason 
ome have had problems using a stock tack with the HEI  systems.

oug Hargrove 

==================================
es, all you have to do is to adjust the potentiometer. I have a  tach
alibration set-up and verified that it is just as accurate when  calibrated
or a V8 as it is when it is calibrated for a 6. The original  design specs
alled for a different capacitor on a V8 tach board but in  practice it
oesn't seem to matter. The only catch is you need to start with  a good
ach. I have a recalibrated Corsa tach on my V8 and it's spot  on.
raig Nicol
6 with 4.2L Olds V8
-----Original  Message-----
rom: _v8vairs-bounces at corvair.org_ (mailto:v8vairs-bounces at corvair.org)  
_mailto:v8vairs-bounces at corvair.org_ (mailto:v8vairs-bounces at corvair.org?) ] 
On
ehalf Of _paulsiano at aol.com_ (mailto:paulsiano at aol.com) 
ent: Saturday,  September 18, 2010 5:50 AM
o: V-8 Vairs
ubject: [V8Vairs] Corsa Tach in  a V-8
Can a Corsa tach be calibrated to accurately work with a V-8?   Can it be
one by simply adjusting the potentiometer?   I dimly  recall the addition 
f
 resistor to do the job.
As always,  thanks in advamce.
Paul
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