single plug head on dual plug motor?

daviddunivan · April 3rd, 2011, 06:02 PM

ok first off, not looking for racing horsepower etc just gas mileage. have a 93 mustang with a blown head gasket, pulled it down it has a cracked head. i have a good single plug head laying around that i could bolt on this motor if i can run only one coil pack. if so which one the front coil or rear coil. any help or anyone know let me know thanks.

Mikel89us · April 3rd, 2011, 08:15 PM

No this wont work right. The left side (driver) coil pack is what is used on startup, and the right side is used under load. Both at cruise. You can re wire one of the plugss and use a distributor. I did this to mine in high school. But its Way easier to get yourself another dual plug head.

Mikel89us · April 4th, 2011, 10:39 PM

Another note, is that if you want gas milage, up the compression. I dont know about any machine shops near you, but it costs me $70 to have a head milled. Its the best $70 i ever spent. I was getting 32-35 highway MPG after taking .135" off the head.

Matt Cramer · April 5th, 2011, 09:37 AM

Originally Posted by Mikel89us

No this wont work right. The left side (driver) coil pack is what is used on startup, and the right side is used under load. Both at cruise. You can re wire one of the plugss and use a distributor. I did this to mine in high school. But its Way easier to get yourself another dual plug head.

You could rewire the harness so that the Dual Plug Inhibit signal is on all the time and it only runs on one coil pack to turn off the right side coil pack.

Mikel89us · April 5th, 2011, 06:03 PM

Originally Posted by Matt Cramer

You could rewire the harness so that the Dual Plug Inhibit signal is on all the time and it only runs on one coil pack to turn off the right side coil pack.

still making it easier to just replace the head.

April 3rd, 2011, 06:02 PM	#1
daviddunivan Newbie Join Date: Apr 2009 Posts: 6 iTrader: 0 reviews	single plug head on dual plug motor? ok first off, not looking for racing horsepower etc just gas mileage. have a 93 mustang with a blown head gasket, pulled it down it has a cracked head. i have a good single plug head laying around that i could bolt on this motor if i can run only one coil pack. if so which one the front coil or rear coil. any help or anyone know let me know thanks.

April 3rd, 2011, 08:15 PM	#2
Mikel89us Regular 1991 Mustang 2.3L 11:42 @ 61 in the 1/8th Join Date: Feb 2011 Location: Logansport, IN Posts: 362 iTrader: 0 reviews	No this wont work right. The left side (driver) coil pack is what is used on startup, and the right side is used under load. Both at cruise. You can re wire one of the plugss and use a distributor. I did this to mine in high school. But its Way easier to get yourself another dual plug head. __________________ 1991 Mustang LX 2.3L 5 Speed convert 1989 Ranger 4X4 2.3L 5 Speed Entire turbo kit waiting to be used again.

April 4th, 2011, 10:39 PM	#3
Mikel89us Regular 1991 Mustang 2.3L 11:42 @ 61 in the 1/8th Join Date: Feb 2011 Location: Logansport, IN Posts: 362 iTrader: 0 reviews	Another note, is that if you want gas milage, up the compression. I dont know about any machine shops near you, but it costs me $70 to have a head milled. Its the best $70 i ever spent. I was getting 32-35 highway MPG after taking .135" off the head. __________________ 1991 Mustang LX 2.3L 5 Speed convert 1989 Ranger 4X4 2.3L 5 Speed Entire turbo kit waiting to be used again.

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