new Triton "Piston Mod"

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Dec 22, 2012 | 01:20 PM

#11

AKlowriderZ71

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Dec 22, 2012 | 02:18 PM

#12

oakley6575

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Wow that is crazy. What causes the the piston to blow the spark plug out?? My mom has a 5.4L Expi in her driveway right now.

I'm home from school in vegas right now but as soon as I left school, it snowed for two strait days and one day was down at -10. Good thing I left when I did.

Dec 22, 2012 | 02:36 PM

#13

03sierraslt

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The 5.4 is notorious for this problem, it blows the plugs out like the factory thread serts are junk.

Dec 23, 2012 | 12:34 PM

#14

1FastBrick

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From: JunkYard

Quote:

Originally Posted by 03sierraslt

The 5.4 is notorious for this problem, it blows the plugs out like the factory thread serts are junk.

You mean the factory casting's are junk...

Dec 23, 2012 | 12:37 PM

#15

AKlowriderZ71

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Mostly on the earlier models, that only had about 4 threads in the head for the spark plug. I cant remember what the break point was, but eventually Ford improved the design by threading the full bore.