You know my take on this Scott, (I DO NOT like a gap too small)
As for an answer to your question, first read this, I just found this on a post over on F-150
Originally posted by 1BADTK
Two things, BR7EF's are way to cold a plug to run everyday and they will make the truck buck and miss really bad, and a stock Lightning will miss at idle. Do not close the gap on whatever plug you use if u are not running any increased boost. to close will cause a miss also. Gap at .042 for stock boost, and reduce that .001 per extra pound of boost over stock. :thumbsup:
Why am I asking you to read this ? Because I wanted you to notice the Gap
(.042) I think stock may even be bigger ???
We start out with a large Gap, WHY ??? Because that’s the way they're designed to work CORRECT.
Now to understand why EVERYONE tells you to gap smaller, and in fact gap smaller themselves. As you add more Pulley and Boost and Power, you are also adding more Cylinder Pressure, and at some point,
IT MIGHT get so strong that it can actually cause "Spark Blow Out", meaning the Gap is too large and the nice spark that use to jump across from tip to center, is now in the middle of a hurricane. So the band-aid fix is to simply make the gap closer, so the spark doesn't have to jump as far anymore, hence the problem is fixed. FIXED WRONG and it'll work, but you just took power and technology away from the design.
My ignition will fire CORRECTLY right up to a Gap of 1.00,
I currently run .038 -.040 gap, and that’s with major boost 15-17 lbs, plus
75 HP of Nitrous. Why can I get away with it (I know you know the answer Bro, but some may not) because I did it right and increased the spark with a Multi Spark Ignition, NOT HID THE SPARK SO THE STORM CAN'T GET IT.
A little test,
stand 3 inches from a wall and run into it,
then stand 3 feet from a wall and run into it
WHICH GIVES YOU A BETTER BANG [smilie=xxrotflmao.gif]
WHAT EXACT GAP DO YOU HAVE RIGHT NOW ???
WHAT GAPS HAVE YOU TRIED IN THE PAST ???
AND HOW MUCH BOOST ARE YOU SEEING ???
BTW Scott,
If you read the whole Post, you'll see EVERYONE is having prob's with BR7's on the street unless they are heavily moded
I would give serious thought on NOT USING THEM BRO
http://f150online.com/forums/showthread.php?s=dc0299901aeb4708a0ce2634e668a811&threadid=169426