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Old 02-14-2011, 07:53 AM
Palidun Palidun is offline
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Default Coil for 4.0 SOHC

I was reading on the internet about a hot coil called a Sreaming Demon coil for Ford Ranger 4.0's and the plug wires to go with it that let you open the plug gap to .065. Before I plunk down the cash, have any of you heard of this coil/tried it, and what were the results?
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Old 02-14-2011, 08:09 AM
dixie_boysles dixie_boysles is offline
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Default Re: Coil for 4.0 SOHC

yeah i have heard of it. a few peeps use it, but I dk how it makes the truck run
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Old 02-14-2011, 08:15 AM
Palidun Palidun is offline
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Default Re: Coil for 4.0 SOHC

I would think that if the gap is wider, you would get a better fuel burn, and in turn better gas mileage, assuming the plugs can take it but at the same time, I'm a bit concerned with addl pressure on the pistons and higher op temps that could result in plug knock.
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Old 02-14-2011, 08:24 AM
ben10 ben10 is offline
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Default Re: Coil for 4.0 SOHC

I have one on my truck, I like it, it seems to idle better, and I haven't noticed any problems, I think it might run a little better, but its hard to say. I haven't put gas in it since I put it on so I can't say for the mileage yet.
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Old 02-14-2011, 08:57 AM
Palidun Palidun is offline
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Default Re: Coil for 4.0 SOHC

Ben10 - Did you change the wires and plugs when you installed it, or did you just change the coil out? How long have you had it?
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Old 02-14-2011, 06:16 PM
ben10 ben10 is offline
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Default Re: Coil for 4.0 SOHC

i have had it for one week today, i have almost new wires on it that are motorcraft 8mm wires, and i changed spark plugs to autolite iridium plugs and gapped them to .065" as per instructions.
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98 2wd 2.5, 5 speed, dropped with some stuff done
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Old 02-14-2011, 06:18 PM
DiabloBlanco DiabloBlanco is offline
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Default Re: Coil for 4.0 SOHC

Get it, many people love it. if i can find one for a 3.0 im jumping on it.
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