the video and the carnage. The shaft on the one valve was burnt half way through also. http://www.youtube.com/watch?v=PaiJ3dsPR_M&feature=share
What do you think caused this hole in my head?
- Thread starter JD Dave
- Start date
Could injector spray be hitting the back side of the valve while it was open causing it to deflect back up to the head? I would think things would have to be way out of wack for this to happen, but for the valve stem and head to be burned something was seriously wrong?
The piston looks perfect and so does the cylinder walls. We don't have accents, you guys do.
That's what I'm thinking. Just wanting to know what I should be looking for before I put it back together. Don't want to screw another head or something worse.
Almost like that injector was firing way out of time? I've been wondering if a glitch like that could break a crank too.
I dont want to run you down the wrong road making assumptions and hopefully someone way smarter than me will chime in but If the injector fired while the valve was open that far the piston would be down in the bore a ways I think.
After looking at the pics and re-reading the thread I retract my earlier guess.
This seems more likely as a stuck valve would have burned up the exhaust chamber not where it made the hole in the head!
Ouch that blows man id say it was a crack/bad casting that finally gave up the ghost? If the piston/cylinder look good, injector shouldn't be the issues???
I never would have thought of that but since you guys agree I'm leaning towards this reason. The heads were mildly ported. She was running around 46-4800 rpm there. I'm putting a stock head back on with Socal springs and retainers, hoping it doesn't really matter that the flow might be a little less on the stock head. Thanks for the help guys.
