What spark plugs are the best? - Mustang Evolution

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Old 04-01-2013, 08:29 PM   #1
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What spark plugs are the best?

What are the best plugs for my 03 GT?
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Old 04-01-2013, 10:24 PM   #2
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i would go with the pul/star spark plug thats what i use its a bit prices at any where between 13-14 dollars but well worth it another good one is Bosch
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Old 04-01-2013, 10:46 PM   #3
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Any iridium works like Ngk ...etc just don't buy e3 spark plugs
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Old 04-02-2013, 01:57 AM   #4
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Stick with original. Our motors like to be picky at times as I found out.
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Old 04-02-2013, 02:07 AM   #5
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Oem
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Old 04-02-2013, 02:14 AM   #6
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oem service plugs...$5 a pop on average and always work like a charm
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Old 04-02-2013, 04:59 AM   #7
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Thanks guys. Has anyone had a problem with them blowing out if the block? I read that that is common with the 4.6. Do you have to remove the fuel rail to change them?
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Old 04-02-2013, 05:25 AM   #8
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Copper tipped motorcraft
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Old 04-02-2013, 11:02 AM   #9
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Quote:
Originally Posted by Allans03ragtop View Post
Thanks guys. Has anyone had a problem with them blowing out if the block? I read that that is common with the 4.6. Do you have to remove the fuel rail to change them?
yea that is a common problem on our cars but i havent had it happen...(knock on wood) and you shouldnt have to remove the fuel rails.
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Old 04-02-2013, 11:07 AM   #10
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Thanks everyone
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Old 04-02-2013, 11:13 AM   #11
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Yup motorcraft is what i got
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Old 04-02-2013, 11:26 AM   #12
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Quote:
Originally Posted by rajeev2liz View Post
i would go with the pul/star spark plug thats what i use its a bit prices at any where between 13-14 dollars but well worth it another good one is Bosch
Bosch are the worst plugs made even for my BMW. I use NGK TR6 in a high boost application.
If your car is bolt on modded stick with the OEM motorcraft plugs.

---------- Post added at 11:26 AM ---------- Previous post was at 11:24 AM ----------

Quote:
Originally Posted by Allans03ragtop View Post
Thanks guys. Has anyone had a problem with them blowing out if the block? I read that that is common with the 4.6. Do you have to remove the fuel rail to change them?
Your car has the 7/8 thread Romeo heads and you will not have any issue. The early Windsor heads had on 4/5 threads and were more prone to blow out. Also make sure the use some anti seize on the plugs treads and you will be good.
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Old 04-02-2013, 11:54 AM   #13
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I had a problem with the thread stripping on one, from either over tightening which i don't think we tightened them that tight, or he said carbon build up and while tightening them messed the threads. But its all fixed now. He said that they are known for that though.
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Old 04-02-2013, 01:38 PM   #14
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Any iridium works like Ngk ...etc just don't buy e3 spark plugs
There's no need for iridium plugs in these motors unless you have serious work done.
It's just extra money thrown away for a fancy electrode and brand name.
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