Yet ANOTHER Spark Plug thread . . .

[GAINMOB]

plugs and filters...best to go OEM...everything else use whatever you want

 

[GAINMOB]

fuel filters that is

 

[Captain Morgan]

I called Bosche and 2 reps called me back within 2 hours. They agreed to take the plugs back and reimburse me for them, no problem.

So . . still need to buy new plugs within 24 hours, so either the Motorcraft or the NGKs.

Final thoughts before I head to the auto parts store?

Tapered? Crush rings? Bueller? BUELLER?



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[toms89]

I called Bosche and 2 reps called me back within 2 hours. They agreed to take the plugs back and reimburse me for them, no problem.

So . . still need to buy new plugs within 24 hours, so either the Motorcraft or the NGKs.

Final thoughts before I head to the auto parts store?

Tapered? Crush rings? Bueller? BUELLER?



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I already said I would go with OEM plugs so..

As far as Tapered or Crush rings I would go tapered. I would not even consider crush ring an option with a tapered seal plug hole. I would think that it would cause issues in that there is not a flat surface for the crush seal to "seal" against.

Bueller graduated... lol.

 

[rburch]

Because they work. I had them in my set up at 12psi making close to 600hp and they never missed a beat. Buddy of mine is running them in a stroked and turboed 97 GT. They're really popular among the high psi 03/04 crowd.

They might be on the cold side for a stock N/A motor though. They're one heat range colder then what comes stock in my Cobra. I don't know how those compare to the expy's though.

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Most people run NGK in their charged or boosted engine because that is what they are made for!

 

[rburch]

^ +1

Tom is right, stick with Motorcraft and your only option is the tapered plugs because of head design!

 

[Captain Morgan]

"I would not even consider crush ring an option with a tapered seal plug hole"

Exactly, I agree with you and this is what I was trying to verify. Since some spark plugs that are supposed to be for this engine are not tapered (in the pics), it leaves me in doubt.

If Bob says "I'm the guy that drilled the damned holes and I can tell you 100% that they are all tapered" then that would settle it. Otherwise, it still seems a bit questionable to me.

Anyhoo, at this point I'm just going to buy some motorcraft (tapered) platinum\iridium plugs and be done with it.


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[Captain Morgan]

Qty 8 SP-479 \ AGSF22WM

All gapped and lined up, ready to go.

Thanks for everyone's input!


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