13bRotaryBori

iTrader: (1)

ive been thinking of swapping my trailing spark plugs and coil for leading spark plugs and coil.. so i can have 2 Leading Coils which would mean using 4 leading spark plugs.. is there an advantage to doing this or is this a bad idea?

please help me out, i want to improve my power just wondering if this will work or not

nillahcaz

iTrader: (2)

just leave it be, the stock ignition is real good. if you wanna beef up your ignition get good wires, get an ignition box, get iridium plugs last to top it off.

Banzai-Racing

iTrader: (11)

This is a very bad idea. The trailing coils fire at different times as they are two coils controlled by one igniter, the leading coil pack is a single coil with two outlets that fire at the same time. Additionally running four 7's (leading plugs) is the opposite of what you should be doing, with any of the boosted cars you run four 9's (trailing plugs) to take advantage of the colder heat range.

SirCygnus

iTrader: (1)

what he was asking is basically ghetto rigging it to run 4 coils instead of three. Getting a used pair of coils and swapping out the leading pack with two coils.

many people run 4 coils. i dont see what the problem is.

Banzai-Racing

iTrader: (11)

You don't see what the problem is? There are a total of three coils in the car in the stock configuration. Running two leading coils reduces that the only two coils, losing the ability to fire the trailing coils at the correct time.

farberio

iTrader: (7)

That, and your tach is run off of the trailing coil pack.

arghx

iTrader: (3)

crucial motor blowage

TitaniumTT

Absolutely horrible idea. Forget it completely.

You do realize that you don't need to change coils to change plug heat ranges.... right?

I run four coils. I also run a standalone to properly control them. He mentioned nothing about a standalone not to mention running the trailing in wasted spark is an aweful idea. If he wanted to jury rig four coils he would run two sets of trailing, not leading.

I'm curious as to what timing the trailing would be firing the wasted spark at. Without doing any math I bet it would be somewhere around 70* BTDC..... that could equal blown motor.

Easy enough to fix. I'm more concerned about the ignition FUBAR'ing the motor

classicauto

iTrader: (3)

Any gains you'll get in the power department from modding your ignition will come from making a stronger spark and burning the mixture more extensively. You can do this by simply adding an MSD 6A to the leading coil pack.

Gains will be very minimal.

What you're proposing will not work....in the way you're thinking. Keep it stock configuration. I ran 383whp on a ego busting mustang dyno on a bone stock ignition system - so its not holding you back.

13bRotaryBori

iTrader: (1)

thanks guys. just wanted to know if it would work or not.. since you guys are senior rotorheads ill take your advice and let it be.. ill just save up for a MSD setup.. thanks again

HAILERS

MSD and Crane are also superfulous items. Been there, done that. Then again, I'm not the all out racer like the rest of you who have significant modifications like removing the airpump.

I've gone through what your going thru now. At one time I installed a second Lead coil assy. It spliced the wires to it from the stock wiring for the original coil assy. So I had one plug fed from one lead coil assy and the other plug fed from the other lead coil assy. The second plug wire from each was just joined to gnd. That worked for several months with no problems, but it obviously didn't do squat. After that I bought the Crane Cam FIREBALL!!!!! Had fun installing it, but again, not worth the cost in my opinion.

So. That's what I think about that. Big deal. The money would have been better spent on a RTEK2.1.....but that item didn't exist at that time.

Hmmm. Can't wait for you to ask about SAFC's.

TitaniumTT

That's the funniest **** that I've read in a LONG time

pistones

iTrader: (5)

maybe he means to run leading coils as to simulate zero split?