So since "many" failures aren't posted on the interwebs, here's mine for an FYI, datamining expedition, finger pointing, education, whatever 
:
In Edmonton at the NHRDA race last season I noticed a little oil under the pcv catch can before my second qual run. Kind of disappointing since I was #1 qualifier and had ran a new best the night before at T&T. The little guy on my shoulder who writes the checks told me to go park it, despite the little guy on my right foot telling me to not be a pu$$y :baby:. Turns out water vapor was washing oil out of the can breather.
Here's a vid, truck ran good, but you can see the white stuff out the stack: [youtube]bbKjWPm4mC0[/youtube]
Hard radiator hose, low on water. Took the valve covers off and had a pushed out cup on the driver side (water and oil on the valve cover). Replaced the cup and no dice, would pressurize the cooling system very quickly. Pulled the head thinking it might be bad. The mechanic said he thought he saw a crack in a cyl. after some penetrant dye. Engine builder couldn't say one way or the other so I called it quits. Oil "looked" fine (not milky).
Last week after mag testing the block, that cyl was cracked and the one next to it as well. #2 main bearing was on it's way out too. A little fretting on the caps. Everything else was perfect, crank magged fine.
Not sure about that bearing. Had oil analyzed a couple times and cut apart filters and everything was fine. Engine builder said oil in the pan looked good at teardown, but haven't looked at the filter yet.
I don't think it's too bad after 100 or so passes at ~900hp.
Stock caps with studs, block filled over half way (about half way up the inlets, the filler chamfered to improve flow in).
So new plan is LBZ block and go back at it.
:In Edmonton at the NHRDA race last season I noticed a little oil under the pcv catch can before my second qual run. Kind of disappointing since I was #1 qualifier and had ran a new best the night before at T&T. The little guy on my shoulder who writes the checks told me to go park it, despite the little guy on my right foot telling me to not be a pu$$y :baby:. Turns out water vapor was washing oil out of the can breather.
Here's a vid, truck ran good, but you can see the white stuff out the stack: [youtube]bbKjWPm4mC0[/youtube]
Hard radiator hose, low on water. Took the valve covers off and had a pushed out cup on the driver side (water and oil on the valve cover). Replaced the cup and no dice, would pressurize the cooling system very quickly. Pulled the head thinking it might be bad. The mechanic said he thought he saw a crack in a cyl. after some penetrant dye. Engine builder couldn't say one way or the other so I called it quits. Oil "looked" fine (not milky).
Last week after mag testing the block, that cyl was cracked and the one next to it as well. #2 main bearing was on it's way out too. A little fretting on the caps. Everything else was perfect, crank magged fine.
Not sure about that bearing. Had oil analyzed a couple times and cut apart filters and everything was fine. Engine builder said oil in the pan looked good at teardown, but haven't looked at the filter yet.
I don't think it's too bad after 100 or so passes at ~900hp.
Stock caps with studs, block filled over half way (about half way up the inlets, the filler chamfered to improve flow in).
So new plan is LBZ block and go back at it.
