Spark Plugs

[Bob Mathis]

I know it has been talked about what plug to use. But I did not see anything on what to use in a Trilogy S/C. It has the tune that Lidio did when it was install. I have not taken them out yet but I think they are still the stock plug. The car has 20,000 mile on it.

[RubberCtyRauder]

NGK -TR6 is what I beleive is recommended for S/C

[RubberCtyRauder]

Here is an older thread (2012 with comments about plugs.,,TR6 is one stage colder than stock..which is good for S/C)

http://www.mercurymarauder.net/forums/showthread.php?t=83448

[RubberCtyRauder]

But you can't ask for NGK TR6 for a Marauder as the applciation doesn;t exist, have to use Cobra from same year or part number 4177

[Bob Mathis]

Got it. Thanks.

[Pat]

Bob, if your a Motorcraft fan then the SP-505, is a copper core plug one heat range colder than stock and is used in Ford hi power applications.

Also don't forget the gap will not be the same as stock which is .052-.056 in. Folks usually gap the colder plug at .032-.040 in. There is a reason but I don't remember it. Maybe someone can chime in. The packing box may have both #'s, SP-505 and AWSF-22C.

Regards,

[fastblackmerc]

Bob, if your a Motorcraft fan then the SP-505, is a copper core plug one heat range colder than stock and is used in Ford hi power applications.

Also don't forget the gap will not be the same as stock which is .052-.056 in. Folks usually gap the colder plug at .032-.040 in. There is a reason but I don't remember it. Maybe someone can chime in. The packing box may have both #'s, SP-505 and AWSF-22C.

Regards,
The gap is tighter not because the colder heat range but your using them in a boosted application. Tighter gap needed so the spark doesn't blow out under boost.

[Bob Mathis]

I changed the plugs today, put NGK TR6s in. Drove it some seems to be a more better. :)

[03blackvegas]

I changed the plugs today, put NGK TR6s in. Drove it some seems to be a more better. :)

Great Grammar.

[Bob Mathis]

I feel it is a good way of say how I feel. Simple and to the point.

[martyo]

Great Grammar.

And what does your grammar handbook say about capitalizing the second word in your sentence?

[03blackvegas]

That's a spelling mistake.

[martyo]

That's a spelling mistake.

Well not technically since it was spelled correctly.

[Bob Mathis]

Are we really worried about my grammar. I was just making a little statement about what I felt about the new plugs.

[martyo]

Are we really worried about my grammar. I was just making a little statement about what I felt about the new plugs.

Exactly my point.

[jwibbity]

To the OP, a lot of boosted guys are running the NGK's :beer:

[BLACKMARAUDER04]

I use the SP-505 in my N/A Marauder with Tune.
I keep the factor gapping on them.
I replace every 36,000 miles.
Very happy with the way the perform.
Cost is only like $1.69 each from Tasca.

[ChiTownMaraud3r]

I'm currently running the cheapass walmart auto lites while I troubleshooted the leaky intercooler as the NGK plugs I had in it were ruined. They work fine, But will spap them out for NGKs this spring.