Are you referring to the Boot Cover - Ford (F7LZ-12A402-AA)?
Are you referring to the Boot Cover - Ford (F7LZ-12A402-AA)?
Okay. So the O ring on the underside of the valve cover is leaking for that plug but that still does not explain the rusty/deteriorated spark plug from that same cylinder? Was it simply invasive water that seeped under the coil cover from driving it in the rain?
I went with TR6 but will end up putting something a heat range colder in it again. I jusf didnt want to drop 90 bucks on plugs only to learn it was going to be down for a whileGlad it seems to be OK.......what plugs did you use??
What plug would you suggest?With a blower your best bet is Copper Plugs.....they conduct the best and at 0.035" gap they are hard to "Blow Out"......take a look at this attached chart!!
Iridiums and Platinums last a long time but conduct fairly poorly......misfires almost guaranteed under pressure!!
View attachment 1551753
You're chart has no info on either the x or y axis, and no source information. Just letting you know that it is a pointless chart. Sorry.With a blower your best bet is Copper Plugs.....they conduct the best and at 0.035" gap they are hard to "Blow Out"......take a look at this attached chart!!
Iridiums and Platinums last a long time but conduct fairly poorly......misfires almost guaranteed under pressure!!
View attachment 1551753
I had tr7ix in there and they worked well, for about 10k and some water lolDo what works for you......my advice has been COPPER for blower applications!!
You may be able to overcome the poorer conductance with HIGHER VOLTAGE!!
I wonder what plugs the IHRA "Real Drag Cars" run.......bet they ain't platinum or Iridiums??