V
03-27-2006, 12:58 PM
Well, the car finally got towed to the shop, so i should have it back by the end of the week to start pulling apart the old motor and see exactly what happened to the bottom end. But right now, i do have several chunks of the oil pan which blew out. And i'm starting to see some interesting things.
My first assumption, that the motor blew due to hydrolocking(injector stuck open) the #1 rod, may be wrong. For some reason it now seems that a fuel explosion in the crankcase blew the oil pan out and cracked the block. Ive been looking at the pieces i have right now, and you can clearly tell which side of the parts were the inside and outside of the oil pan, and looking on several piece of the oil pan, there are no impact marks anywhere. If a rod let go, i would assume to find at least scratches or chips by where the pan cracked apart. but theres nothing. Instead i found something else, on a few of the parts there is visable bending of the cast aluminum pan. The edges of the chunks also show a fatigue in the metal pattern as if the whole bottom of the oil pan bulged to a point it finally then just broke apart. Some parts even have stress cracks by the bulge/bend lines. What backs this theory up is that i still have yet to find ANY parts of the motor other than just oil pan pieces, no rod pieces, no piston pieces, nothing, and i couldnt see any damage when i looked up into the crankcase. This theory is even more possible considering the fuel issues i had right before it blew. I was actually pouring raw fuel out my tailpipes so if it somehow leaked down into the crankcase, maybe when i cranked it, a spark ignited it and set it off, blowing the pan apart. That possible even?? :confused:
But like i said, i'll only know for sure once the car comes back and i get the motor out. I'll be sure to post pics of what i find. its just that right now, i honestly still have no idea what really happened back on that fateful august evening.:shrug:
My first assumption, that the motor blew due to hydrolocking(injector stuck open) the #1 rod, may be wrong. For some reason it now seems that a fuel explosion in the crankcase blew the oil pan out and cracked the block. Ive been looking at the pieces i have right now, and you can clearly tell which side of the parts were the inside and outside of the oil pan, and looking on several piece of the oil pan, there are no impact marks anywhere. If a rod let go, i would assume to find at least scratches or chips by where the pan cracked apart. but theres nothing. Instead i found something else, on a few of the parts there is visable bending of the cast aluminum pan. The edges of the chunks also show a fatigue in the metal pattern as if the whole bottom of the oil pan bulged to a point it finally then just broke apart. Some parts even have stress cracks by the bulge/bend lines. What backs this theory up is that i still have yet to find ANY parts of the motor other than just oil pan pieces, no rod pieces, no piston pieces, nothing, and i couldnt see any damage when i looked up into the crankcase. This theory is even more possible considering the fuel issues i had right before it blew. I was actually pouring raw fuel out my tailpipes so if it somehow leaked down into the crankcase, maybe when i cranked it, a spark ignited it and set it off, blowing the pan apart. That possible even?? :confused:
But like i said, i'll only know for sure once the car comes back and i get the motor out. I'll be sure to post pics of what i find. its just that right now, i honestly still have no idea what really happened back on that fateful august evening.:shrug: