What spark plugs are you boosters using?

[cdsmith_2002]

What plugs do I need to run after I install a Supercharger? I'm using those 4 prong Bosch Iridium plugs now. I'm wondering if the 4 prong design will help them keep from causing detonation?

 

[justinschmidt1]

I use motocraft copper top, 2 steps colder, gapped at .030


You should use 1 or 2 steps colder, copper plug, gapped pretty tight

 

[LAFENATU]

I use motocraft copper top, 2 steps colder, gapped at .030


You should use 1 or 2 steps colder, copper plug, gapped pretty tight

Autolite copper plug.

I would not use anything other than a copper plug with a Supercharger.

 

[94IVGT]

NGK BKR7E i believe

 

[ripper]

Autolite 102's KISS Iridium and platinum plugs will melt.

 

[IceMan]

On one of my cars i have NGK TR6's and on the other Autolite 103's gapped at .038 with an MSD 6AL... With no msd gap them at .030...

 

[cdsmith_2002]

Ok, I'll go with what you guys are running. Something copper and a tighter gap. I'll be done with the Powerdyne a 6BTM install this evening.

 

[95 svt cobra]

104's @ .32 with a 6AL

 

[cmher18]

NGK 4177 TR6 gaped at .028

 

[Jrgunn5150]

104's @ .32 with a 6AL

That's what I ran, but @ .30. I've only read that platinum breaks down, but I didn't want to be the test case, lol.

 

[cdsmith_2002]

How important is the smaller gap? The Autolite tech guy I talked to said to stick with the stock gap when using the 103.

 

[Jrgunn5150]

How important is the smaller gap? The Autolite tech guy I talked to said to stick with the stock gap when using the 103.

Very, boost blows the spark out.

 

[GDawg]

NGK TR-6 (4177) gapped at .35

That's what Kenne Bell told me to put in so that's what I use.

 

[novi281gt]

damn this is old but o well , NGKTR8S .. thats what my shop told me to get for my H/C/I novi2k

 

[vermilion]

i run autolite iridiums at stock gap with the small nitrous im using.