Spark Plug Gap - MustangForums.com


5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

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Old 07-08-2008, 02:41 PM   #1
RedMachAndOrangeFox
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Default Spark Plug Gap

Hey i have a FireBall HI-6S Crane Cam Ignition, and i was wondering what gap i need to use, the stock .044 gap or something bigger for the spark plugs
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Old 07-08-2008, 02:46 PM   #2
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Default RE: Spark Plug Gap

what car?
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Old 07-08-2008, 02:50 PM   #3
RedMachAndOrangeFox
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Default RE: Spark Plug Gap

1989 5.0....... come on look at the section we are in...lol
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Old 07-08-2008, 03:02 PM   #4
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Default RE: Spark Plug Gap

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ORIGINAL: RedMachAndOrangeFox

1989 5.0....... come on look at the section we are in...lol
That means nothing. You have 2 cars in your sig.

Isn't the factory gap like .052-.056 or something like that? .044 seems a lil narrow.
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Old 07-08-2008, 07:01 PM   #5
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Default RE: Spark Plug Gap

chilton said .44 for the 89 5.0s and .054 on the 90+

they were at about .050, so they should be good (yes, i was helping him do it, rick is incompetent, lol, j/k)

P.S. his Mach has a 351 cleaveland for future reference =P
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Old 07-08-2008, 10:04 PM   #6
RedMachAndOrangeFox
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Default RE: Spark Plug Gap

you're funny sam... well my car still dies randomly so i dont know the the heck is going on, there is a bunch of electrical gremlins thats decided to surface... damn auto X!!!
but yeah after futher research on the crane cam ignition site it said no more the .006 more than factory spec
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Old 07-08-2008, 10:11 PM   #7
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Default RE: Spark Plug Gap

with a high energy ignition system you can open the gap up....as for the die at random....if it is ignition system related.. I'd try replacing the tfi module and after that possibly the stator in the dizzy
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Old 07-08-2008, 10:39 PM   #8
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Default RE: Spark Plug Gap

k, thanks.. yeah it seems like ignition related casue its almost like i turned off the key.. it doesnt sputter or anything like its missing it just dies..
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Old 07-08-2008, 10:48 PM   #9
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Default RE: Spark Plug Gap

try what I said if all else fails
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Old 07-09-2008, 02:20 AM   #10
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Default RE: Spark Plug Gap

MJR, what happened was, he went autocrossing(pics are funny, you should see, ill let him post) and afterwards, he lost a couple of electrical things, i.e Turn signals dont work, nor the air, and then this. im guessing hes got a short somewhere, and im gonna get him to my mechanic to check it out, hopefully it is something simple

i went over yesterday to try and diagnose it, and i had a spare dizzy rotor, so i said **** it, put it on, we did a couple of "fun runs" and experienced some wheel hop, and it seemed fine, so we got a new fuel filter, cap, and plugs JIC, but didnt put in the plugs, because we found out his cousin put new ones in before he sold it, so theyre saved for a rainy day.

basically, it didnt fix it, so thats just some extra info for ya
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1989, 2005, 351w, 46l, 50, 85, 89, 99, ford, gap, gapping, mustang, plug, plugs, spark

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