Thread: yes another spark plug question...

i pulled the plugs on my 98 today to check them out and had 2 that were cracked... definatly could be the cause of my WOT miss... it has AL104's in it but i am thinking of changing to the tr55 ngk's. just want to make sure that would be a good heat range for the mods on this car.. from what i read the 104's are better for a 3.4 pully, witch would make them a bit cold for my setup correct? mod list is in my sig..
thanks, jay

I run TR6 on both cars, but I believe those are equivalent to 103's... I've used 104's and T55's as well previously and had no problems,you got other issues two plugs don't just crack... What did you have them tapped at?

i just purchased this car, i think the p/o cracked them puting them in... just the porcelyn is cracked...

well that was it, cracked spark plug ftmfl! its like a completely different car now... thanks to everyone for the help ..