Hi-po coil.....any gains? - Pirate4x4.Com : 4x4 and Off-Road Forum

Landpimp · 12-28-2003, 04:42 PM

Any gains to be had from one(I think pertronix's makes one) on a stock electonic ignition set up on a stock 2f.

Pin Head · 12-28-2003, 05:18 PM

No performance gain. The basic reason is that a higher voltage spark doesn't produce any more power than a lower intensity spark because all the net energy released is in the air/fuel charge and all you need to do is initiate combustion to release all of it. Even if you have a "high energy" system doesn't mean that the running spark voltage will be any higher. The spark gap, compression and the air/fuel charge determine the spark voltage.

The way it works is that if you have a high compression, super/turbo charged engine, then you will need an ignition that is capable of producing a higher voltage in order to ignite the fuel. Most stock engines don't need a high voltage ignition.

Landpimp · 12-28-2003, 05:51 PM

thanks, thats was what kinda expected/thought/remembered

John

Quote:

Originally posted by Pin Head
No performance gain. The basic reason is that a higher voltage spark doesn't produce any more power than a lower intensity spark because all the net energy released is in the air/fuel charge and all you need to do is initiate combustion to release all of it. Even if you have a "high energy" system doesn't mean that the running spark voltage will be any higher. The spark gap, compression and the air/fuel charge determine the spark voltage.

The way it works is that if you have a high compression, super/turbo charged engine, then you will need an ignition that is capable of producing a higher voltage in order to ignite the fuel. Most stock engines don't need a high voltage ignition.

12-28-2003, 04:42 PM	#1 (permalink)
Landpimp Registered User Join Date: Jan 2003 Member # 16085 Location: Gig Harbor WA Posts: 4,101	Hi-po coil.....any gains? Any gains to be had from one(I think pertronix's makes one) on a stock electonic ignition set up on a stock 2f. __________________ 2000UZJ100/92FJ80/90FJ62/86FJ60/82FJ40mustard/82FJ40green/78FJ55/67FJ45LBP/65FJ40LV/65FJ45LV/64FJ45LV/87 Chevy 3/4 ton beater

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12-28-2003, 05:18 PM	#2 (permalink)
Pin Head Registered User Join Date: May 2001 Member # 4783 Location: Orange Co. CA Posts: 1,797	No performance gain. The basic reason is that a higher voltage spark doesn't produce any more power than a lower intensity spark because all the net energy released is in the air/fuel charge and all you need to do is initiate combustion to release all of it. Even if you have a "high energy" system doesn't mean that the running spark voltage will be any higher. The spark gap, compression and the air/fuel charge determine the spark voltage. The way it works is that if you have a high compression, super/turbo charged engine, then you will need an ignition that is capable of producing a higher voltage in order to ignite the fuel. Most stock engines don't need a high voltage ignition.