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aftermarket tach??

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Old Feb 25, 2016 | 07:54 AM
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Red face aftermarket tach??

if im using an aftermarket auto-meter tach, normally you just select 4 cyl, v6, or v8 (2 pulse, 3 pulse or 4 pulse output) with the tachs dip switches.
for a rotary, would i be able to just set it to a 3 pulse (v6) pickup? given that there are 6 faces between the 2 rotors and in theory, the signal off of ONE of the coils (leading or trailing) should be a 3 pulse signal? (3 pulses per revolution?)
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Old Feb 25, 2016 | 08:25 AM
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Originally Posted by turbo-minivan
if im using an aftermarket auto-meter tach, normally you just select 4 cyl, v6, or v8 (2 pulse, 3 pulse or 4 pulse output) with the tachs dip switches.
for a rotary, would i be able to just set it to a 3 pulse (v6) pickup? given that there are 6 faces between the 2 rotors and in theory, the signal off of ONE of the coils (leading or trailing) should be a 3 pulse signal? (3 pulses per revolution?)
Search.

Originally Posted by RETed
You're lucky this is very easy to do on an FC...

There is a "test" lead with a female bullet end.
Both the leading coil and the trailing coil pack have them.
If you use the leading coil end, set tach to 4-cylinder.
If you use the trailing coil pack end, set tach to 8-cylinder.


-Ted
Best way to search for 2nd gen stuff is:

Go to Google.com

In the search bar, type: site:http;//www.rx7club.com/2nd-generation-specific-1986-1992-17/ "whatever youre searching for here"

Last edited by FührerTüner; Feb 25, 2016 at 08:35 AM.
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Old Feb 25, 2016 | 06:54 PM
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thanks tips.

i realized right after i hot 'post' and left for work that it should actually be a 2 pulse system not a 3 pulse, as 2 pulses make one full rotation.
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Old Feb 25, 2016 | 07:00 PM
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google-1
me- zero

FAIL!!!

seems like the negative terminal on the trailing coil is the best choice
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Old Feb 25, 2016 | 08:04 PM
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Originally Posted by turbo-minivan
google-1
me- zero

FAIL!!!

seems like the negative terminal on the trailing coil is the best choice
bro, did you even read what i posted?
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Old Feb 25, 2016 | 10:17 PM
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^im not working with an 86 coil set up.
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