How to make sohc tach work with sr20det!!!!
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compactfean
- Posts: 2602
- Joined: Thu Dec 03, 2009 10:28 am
- Car: 89 240sx s13 sr gt3071r 23psi
B14 sentra ser sr20de-t 7psi
daily - Location: reno nv
How to make sohc tach work with sr20det!!!!
So after months of thinking and looking at wiring schematics I have figured out a way to use the stock sohc tach with the cop sr20det engine! Anyone interested in a write up?
Re: How to make sohc tach work with sr20det!!!!
relatively simple, all you do is add 4 Diode's to the ignitier signal wires coming off the coil pack sub harness, to the Tach signal wire and it works perfectly fine. what was the method you wanted to use?
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compactfean
- Posts: 2602
- Joined: Thu Dec 03, 2009 10:28 am
- Car: 89 240sx s13 sr gt3071r 23psi
B14 sentra ser sr20de-t 7psi
daily - Location: reno nv
Re: How to make sohc tach work with sr20det!!!!
Last edited by compactfean on Sun Sep 25, 2011 12:14 pm, edited 2 times in total.
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compactfean
- Posts: 2602
- Joined: Thu Dec 03, 2009 10:28 am
- Car: 89 240sx s13 sr gt3071r 23psi
B14 sentra ser sr20de-t 7psi
daily - Location: reno nv
Re: How to make sohc tach work with sr20det!!!!
Ok so the diode idea is out. The only info I could find was on another forum and was half of an idea that was almost a write up but THERE ARE TOO MANY RISKS. Diodes heat up and can cause issues if they short. Not to mention you have to butcher 4 wires. Also there is a possibility of signal from one cylinder going to another. Using the autometer tach adapter 9117 (or msd adapter 8913) will have none of those risks and also only have to tap into one wire! I am waiting on my adapter and I'll post up my install for anyone interested.