Tach

x MadMAX DIESEL

x MadMAX DIESEL

<<<< No Horsepower
Dec 30, 2008
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Lexington, Ky
What tach are y'all using? There's a 6k tach from autometer I'm thinking about getting. I'd have to drill and tap for 4 bolts arrayed 90 degrees around the balancer to read. Anyone else make a good tach that might be a flasher? Like read off metallic tape or something alittle simpler?
 
duratothemax

duratothemax

<--- slippery roads
Aug 28, 2006
7,139
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Wyoming
Dont they make tach's that read directly from the ECM tach signal wire...?

Its DC square wave, 2-pulses per revolution.
 
Stingpuller

Stingpuller

The Pusher Man
Jan 11, 2007
2,019
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central Ohio
You don't need to run anything other than a resister and 5 volt reference. I have been running them like that for years. I also run a normal Autometer.
 
duratothemax

duratothemax

<--- slippery roads
Aug 28, 2006
7,139
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Wyoming
No, off the tach signal wire coming from the ECM. Its a white wire that goes to the 16-pin C100 bulkhead connector off of the engine harness.
 
x MadMAX DIESEL

x MadMAX DIESEL

<<<< No Horsepower
Dec 30, 2008
7,535
1
38
34
Lexington, Ky
It'll still read up to 6k or more rpm accurately through that wire? Cause i wouldn't have a clue what that thing could possibly read through the stock system, or over thinking?
 
duratothemax

duratothemax

<--- slippery roads
Aug 28, 2006
7,139
10
0
Wyoming
x MadMAX DIESEL said:
It'll still read up to 6k or more rpm accurately through that wire? Cause i wouldn't have a clue what that thing could possibly read through the stock system, or over thinking?
Click to expand...

It will be way more accurate than some hall-effect magnet sensor thing mickey-moused onto the balancer. :D
 
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