Pass on the AI/CMC collective congrats! That's awesome.
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Caught the right front tire of the #14 car and GP of Indy. Had a blast. The car, not so much. Can't wait for the 100th 500 in a couple weeks
Sam came over yesterday and helped get my motor out of the car. Looks like it was a head gasket. All the cylinders on the head looked pretty bad, but #7 was the worst. Passenger side head looked fine. The pistons on 7&8 were pitted from what looks like detonation, but talking to Matt White the detonation was likely happening due the water getting in the cylinder.
Attachment 1664
Larger picture here: http://i.imgur.com/wdu0wSo.jpg
Water injection. It was used in WW in fighters.
JJ
Couple more pictures (click for big):
Passenger side head
http://i.imgur.com/NbSnFaql.jpg
#8,7,6 on head (left to right)
http://i.imgur.com/wdu0wSol.jpg
#7 on head
http://i.imgur.com/XnDSVyvl.jpg
#8
http://i.imgur.com/ypgpmaYl.jpg
Piston #7
http://i.imgur.com/erhEgqzl.jpg
If anyone has any idea on what they think happened I'm all ears. AFR was good and never saw over 210* water temps. The fact that it was the whole driver's side bank makes me think it wasn't detonation, and possibly an issue with the head gasket not being seated properly or bad machining on the block or heads.
Anyone happen to have some parts for a 5.0? Maybe I could go ahead and swap so I can break cranks and twist rods instead of destroying heads and pistons.
It almost looks like it went lean and burned the piston/head and that resulted in a blown head gasket. I had that happen to me before.
Do you run an O2 in each bank?
Wow look at the second to last pic. I'm having a hard time seeing a leaking head gasket doing that much damage but I don't know.
With all my 4.6 issues I have never had pitting in the head or piston. Bent valves from running what I assume was 87 octane but this is way different from any of my issues.
JJ