When rewiring in my Microtech I noticed something weird about how the ignition was wired up. I just read something about this and decided to share my info.



The ECU is on the pasenger side, but fires the ignitior on the driver side. That's 6' of wiring. I wired my Microtech on the driver side.



"Instead of running the ignitor to coil wires directly to the coils which are about 18" away, they wired them back over to the chassis harness by the ECU, out to the harness that goes to the right front fender then over to the left front fender were it finally goes to the coills. That is about 14' of wiring."



So all you would need to do is cut the ignitor output wires and run them directly to the coil harness which you disconnect from the chasis harness.



Less resistance, hotter spark.

My ignition mod is a GSL-SE dizzy which has even less wiring?

on the fc, the igntior is mounted on the coil

[quote name='ColinRX7' date='May 25 2005, 06:23 AM']My ignition mod is a GSL-SE dizzy which has even less wiring?


[/quote]



Was it free?

N/M I am using all the stuff off my front clip.

[quote name='BoneT2&Harmony' date='May 26 2005, 06:42 PM']Was it free?


[/quote]



yes

The wires that come out of the ECU dont cary a voltage that would drop enought to make a diffrence over that length.

The high voltage (potential loss over long wires) comes from the coil, which only has to travel the distance of the spark plug wires, which just so happen to be made to carry that kind of current.

The ECU doesnt "fire" the ignitor, it trips the ignitior, the ignitor "fires" the coil however.

[quote name='ColinRX7' date='May 26 2005, 04:45 PM']yes


[/quote]



Only the best things in life are free.

psyclo, I was mainly talking about the igniter to coil wires. Shorter wires= less resistance and less RFI.



I ditched most of the FC's stock wiring mainly because the wiring on my FC was crap, and I'm using a Power FC configured for the FD.

Just disreguard this thread, I forgot how different the wiring is.

[quote name='BoneT2&Harmony' date='May 25 2005, 05:08 AM']Less resistance, hotter spark.


[/quote]

Wrong.





-Ted

.

[quote name='RETed' date='May 27 2005, 08:59 AM']Wrong.

-Ted


[/quote]





Interesting





care to elaborate? or log off? pick one?

[quote name='BoneT2&Harmony' date='May 27 2005, 02:54 AM']Only the best things in life are free.


[/quote]



aids is free.



kevin.

[quote name='RETed' date='May 27 2005, 04:59 AM']Wrong.

-Ted


[/quote]





Seems to work for iridium.

[quote name='teknics' date='May 27 2005, 11:45 AM']aids is free.



kevin.


[/quote]



Eh, it controls the population.

[quote name='ColinRX7' date='May 27 2005, 12:22 PM']Interesting

care to elaborate? or log off? pick one?


[/quote]



As I understand it:

Takes more voltage to overcome a larger resistance. More resistance = hotter spark in the secondary.

HAHA, wow this thread is funny. and elliot, you should have stayed in school....

[quote name='1Revvin7' date='May 27 2005, 08:41 PM']As I understand it:

Takes more voltage to overcome a larger resistance. More resistance = hotter spark in the secondary.


[/quote]



Well it's kinda confusing, you won't actually know until you do your own experiment.



From my experience, more resistance results in a longer spark, however the spark is weaker.

Well from a purly physics standpoint, V=I*R or voltage = Current * Resistance. So doing the math...

[quote name='BigTurbo74' date='May 28 2005, 04:06 AM']HAHA, wow this thread is funny. and elliot, you should have stayed in school....


[/quote]



Well go on and correct me then........... https://www.nopistons.com/forums/pub...R#>/violin.gif

are you blowing the spark out with your 500hp motor? I dont **** with ignition until its nessessary to.

You guys need to take a basic electronics class and learn about "air gap".



The biggest resistance in the "circuit" is the air gap in the spark plug.



Now, take a DMM and measure the air gap at what your plugs are running - about 0.030"?



Wow, you can't measure it?



So tell me how lowering the spark plug wire resistance is going to overcome the HUGE air gap resistance?

It can't.



This is why all the bullshit about our-spark-plug-wires-make-more-power is exactly that...bullshit.



Add combustion pressure and fuel swirling around, and it gets that much harder to fire off a spark under those conditions.



Anyone who claims to get better spark with shorter wires is smoking GOOD QUALITY CRACK.





-Ted

psyclo's point is the most relevant here.

The power for the spark comes directly from the primay relay, to the ignitor, to the coil.



Compared to most cars of it's time the stock RX-7 has a really strong spark.



Tweaking with wire gauge, length & resistance will make only a small change in the net spark energy at the plug tip.

Too much power through the coils & ignitors will run their temps up & shorten their life.

[quote name='RETed' date='Jun 1 2005, 10:02 AM']Anyone who claims to get better spark with shorter wires is smoking GOOD QUALITY CRACK.

-Ted


[/quote]





wont that advance the timing? and longer ones retard it? https://www.nopistons.com/forums/pub...1047683785.gif



like what i said before , dont **** with it. Doing that mod will only leave you stuck on the side of the road. Late for a hot date.





hotter spark ping!

[quote name='RETed' date='Jun 1 2005, 11:02 AM']You guys need to take a basic electronics class and learn about "air gap".



The biggest resistance in the "circuit" is the air gap in the spark plug.



Now, take a DMM and measure the air gap at what your plugs are running - about 0.030"?



Wow, you can't measure it?



So tell me how lowering the spark plug wire resistance is going to overcome the HUGE air gap resistance?

It can't.



This is why all the bullshit about our-spark-plug-wires-make-more-power is exactly that...bullshit.



Add combustion pressure and fuel swirling around, and it gets that much harder to fire off a spark under those conditions.



Anyone who claims to get better spark with shorter wires is smoking GOOD QUALITY CRACK.

-Ted


[/quote]





THANK YOU for the more thorough reply. https://www.nopistons.com/forums/pub...#>/biggrin.png

[quote name='RETed' date='Jun 1 2005, 07:02 AM']You guys need to take a basic electronics class and learn about "air gap".



The biggest resistance in the "circuit" is the air gap in the spark plug.



Now, take a DMM and measure the air gap at what your plugs are running - about 0.030"?



Wow, you can't measure it?



So tell me how lowering the spark plug wire resistance is going to overcome the HUGE air gap resistance?

It can't.



This is why all the bullshit about our-spark-plug-wires-make-more-power is exactly that...bullshit.



Add combustion pressure and fuel swirling around, and it gets that much harder to fire off a spark under those conditions.



Anyone who claims to get better spark with shorter wires is smoking GOOD QUALITY CRACK.

-Ted


[/quote]



Amen.