Blower spark plugs

[NastyStang]

I have a vortech r-trim with 18 psi my heaads are TFS high ports
I recently took out the plugs and the where black, I mean BLACK :angry7:
I would like to knoew if any one has a better plug to use?
Autolight?? is what was in there :icon_rr:

 

[Blakonblak94]

Sounds like it's more of an issue with it running really rich to me.

 

[LCJR_venOm]

The car has 42lbs injectors.

 

[Blakonblak94]

If you can post a picture of the plugs. It'll help us diagnose things a bit further.

 

[KWClutch]

NGK TR6 gapped at .035 is what I have on my car and is recommended by many people.

 

[IceMan]

Autolite is a very good plug. Seems to me that your car is running very rich and the plugs is not your problem. Make sure that the tune in the car good. If the tune is making the car run rich, than it will black out any plug.

 

[94Snake]

Have to agree on the being too rich, i've never had an issue with Autolites or Autolite Racing plugs.

 

[LAFENATU]

Autolite Copper plugs are excellent, especially with boost.

The black is definitley being too rich..are they stock heat range or do you have a little cooler plugs?

 

[modo]

r-trim @ 18 lbs and you only have 42s? is there a fmu on this car?

 

[NastyStang]

:icon_rr:

 

[NastyStang]

I have two mustangs one is a 1990 5.0 the other is a 1994 both GT convertables
the 90 has TFS heads and 42 lb injectors And running an R-trim w/18lbs boost and the plugs are black.
the 94 has Edelbrock heads and 30 lbs injectors and is running an S-trim 8 psi boost, but I aim having starting problems :BangHead:
KWClutch would you know if the make those NGK TR6 plugs for a 5.0 liter because I went to 4 places to find out they don't have them.
Auto zone, Discount, Bennet auto, & Adavance.... :angry7: Nothing.

 

[LAFENATU]

I have two mustangs one is a 1990 5.0 the other is a 1994 both GT convertables
the 90 has TFS heads and 42 lb injectors And running an R-trim w/18lbs boost and the plugs are black.
the 94 has Edelbrock heads and 30 lbs injectors and is running an S-trim 8 psi boost, but I aim having starting problems :BangHead:
KWClutch would you know if the make those NGK TR6 plugs for a 5.0 liter because I went to 4 places to find out they don't have them.
Auto zone, Discount, Bennet auto, & Adavance.... :angry7: Nothing.

There is no reason to spend extra money on NGK TR6 plugs when there are plenty of 8 and 9 second cars running a basic Autolite copper plug.

The plugs are not the problem, the tune is.

 

[Venom351R]

You cant change your rich condition by swapping plugs or injectors. You need to get it tuned or retuned.

 

[modo]

the "r-trim" is the father of the "t-trim". a h/c/i car with a "r-trim" being spun hard enough is going to need a lot more fuel then what 42s can provide at stock fuel pressure. either that base fp is jacked or there is a fmu on the car which is causing the black plugs.