Ignition Mod
05-29-2005, 11:42 AM
#21
Senior Member
Join Date: Oct 2001
Location: Peoria, AZ
Posts: 10,906
[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...........
[snapback]718495[/snapback]
[/quote]
Well go on and correct me then...........
06-01-2005, 10:02 AM
#23
Senior Member
Join Date: Nov 2002
Location: Honolulu, Hawaii USA
Posts: 925
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
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
06-01-2005, 12:14 PM
#24
Senior Member
Join Date: Feb 2004
Location: Orange Park FL
Posts: 363
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.
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.
06-01-2005, 04:33 PM
#25
Senior Member
Join Date: Nov 2002
Location: Colorado Springs
Posts: 1,679
[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?
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!
-Ted
[snapback]719676[/snapback]
[/quote]
wont that advance the timing? and longer ones retard it?
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!
06-01-2005, 08:02 PM
#26
Senior Member
Join Date: Oct 2003
Location: Canada
Posts: 3,502
[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.
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
[snapback]719676[/snapback]
[/quote]
THANK YOU for the more thorough reply.
06-01-2005, 11:30 PM
#27
Junior Member
Join Date: May 2005
Posts: 24
[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.
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
[snapback]719676[/snapback]
[/quote]
Amen.
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