762mm
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Well, I just finished one of the top two "urgent" maintenance items on my SSV : rebuilt the original alternator and installed 8 new Champion Iridium 9406 (which I gapped to the 0.054 spec)
I pulled the Motorcraft Platinums out of the Triton, which I assume were the originals. The plugs came out fairly easy, however the rear ones were a PITA, especially the one on the passenger side. I had to apply so much torque on the ratchet I was afraid I'd break something with that one... The new plugs went in with some anti-seize on them and were tightened by hand till they went in no more, then about 1/4 turn with the ratchet extra to make them snug.
I measured the gap on the old plugs and, strangely enough, they had inconsistent wear. Some plugs were 0.060 or a little more, whereas the worst one was in the 0.075 territory!
If you do this, here's an important tip: when you remove each boot, before putting the socket in there, blow the spark plug channel out with compressed air (using a long wand air gun). Then, once you start removing the spark plug about half way, stop, pull out the socket and blow it out again to get the debris that was squeezed under the plug out. The amount of debris, sand and even pebbles that came out of there was astounding!
Also, do them one at a time, so you do not contaminate the neighboring plug channels when you blow out the debris, because it literally flies everywhere.
Anyway, here are some pictures:
Old vs. new :
Original 8 plugs comparison :
Here's the tutorial I used :
I pulled the Motorcraft Platinums out of the Triton, which I assume were the originals. The plugs came out fairly easy, however the rear ones were a PITA, especially the one on the passenger side. I had to apply so much torque on the ratchet I was afraid I'd break something with that one... The new plugs went in with some anti-seize on them and were tightened by hand till they went in no more, then about 1/4 turn with the ratchet extra to make them snug.
I measured the gap on the old plugs and, strangely enough, they had inconsistent wear. Some plugs were 0.060 or a little more, whereas the worst one was in the 0.075 territory!
If you do this, here's an important tip: when you remove each boot, before putting the socket in there, blow the spark plug channel out with compressed air (using a long wand air gun). Then, once you start removing the spark plug about half way, stop, pull out the socket and blow it out again to get the debris that was squeezed under the plug out. The amount of debris, sand and even pebbles that came out of there was astounding!
Also, do them one at a time, so you do not contaminate the neighboring plug channels when you blow out the debris, because it literally flies everywhere.
Anyway, here are some pictures:
Old vs. new :
Original 8 plugs comparison :
Here's the tutorial I used :
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