Spark plugs

[1990 quasar blue]

NGK Irridium here too. They work great but, I'm running the TR7IX per Marc Haibeck. I assume that the only difference is the heat range.

[Aurora40]

Originally Posted by 1990 quasar blue

NGK Irridium here too. They work great but, I'm running the TR7IX per Marc Haibeck. I assume that the only difference is the heat range.

That's what he recommended to me also. I looked up on the NGK site and found the early/flat seat equivalent is the BKR7EIX.

Both are two ranges colder than the plugs NGK recommends for our applications.

Did you simply overtighten the plugs to taper the seat on the head? I was leary of doing that and went with flat-seated replacements.

[1990 quasar blue]

I ended up going with the over-torque method. So far so good it's just that the car hesitates a little when cold. After it runs for five minutes all is well.

[A26B]

Originally Posted by va beach biker

It's almost time for the beast's first spark plug and oil change. What plugs are you guys running, and is a little dab of anti-seize on the threads worth the bother?

Ditto anti-seize recommendations. Also, ALWAYS wait for the engine to cool completely down before removing the plugs. Aluminum has a high coefficient of thermal expansion, meaning that the thread clearance is much reduced (tighter) with the engine warm and greatly increases the liklihood of pulling threads when the plugs are removed, especially if no anti-seize is present.

[zr-1assassin]

has anyone tried the #5 acdelco?

[Z Factor]

Originally Posted by va beach biker

It's almost time for the beast's first spark plug and oil change. What plugs are you guys running, and is a little dab of anti-seize on the threads worth the bother?

I have always used it being taught the old adage at an early age, "an ounce of prevention is worth a pound of cure". To me it is as automatic as gapping the plug so I don't think of it as a bother.

As to plugs I have NGK's in now and have had the OEM's without noticing a difference.

Mobil 1 filter and oil every 3k.

[blackjack]

just make sure the anti-seize does not go in the combustion chamber...leave a couple of threads clean,because anti-seize WILL cause pre-ignition..
bj

[Aurora40]

Originally Posted by zr-1assassin

has anyone tried the #5 acdelco?

Yup. For a good 50 miles at least. I noticed a fair bit of knock retard at WOT when scanning. I asked Marc about it and the first thing he said was to ditch the Rapidfires for some NGK Iridiums. That did reduce the amount of KR right off the bat.