Overheated this weekend - 0 compression in 5 and 7

[pridekit]

#7
IMG_4625.jpg

#5
IMG_4626.jpg

#3
IMG_4627.jpg

#1
IMG_4628.jpg


I forgot to mention that I dropped the head off at a local machine shop for them to look at and see if it is warped, cracked, etc.

[CJD]

Nothing jumps out at me from the pics...except that you have been getting water in the #5 and 7 holes. If they don't find a crack in the head, then the exhaust valves may be sticking, which would then allow water in from the riser on the intake stroke. It isn't likely a crack would result in 0 compression, but stuck valves could account for it.

The water is indicated by the very clean pistons compared to the normal carbon you would expect, like on the 1 and 3 holes...and also the corrosion on the valve heads. I'm not sure what the goo is on the #7 chamber. Was it hard or soft and gooey?

Hopefully it's just sticking valves, as they are an easy (and relatively inexpensive) fix.