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Old 05-07-2004, 10:56 PM
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blown motor

can someone explain to me what happens to a motor when you blow it? do like the piston rings break or what?

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Old 05-07-2004, 11:42 PM
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lots of things can happen, but the most common when referring to a "blown" engine, is when it slings a rod or two and vents the side of the block, making the block and almost everything else worthless. blown pretty much means it came apart.
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Old 05-08-2004, 12:41 AM
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Doublevision is correct but is a worst case description. A hole melted in a piston head or popping the head off a valve could be call a blown motor. It's just another term that means motor broke.
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Old 05-08-2004, 01:40 AM
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I was crusing down the freeway at 80mph on a nice 98 degree day in S. California (lol), had lost the fan belt some time about 15 miles before, in my '76 Chevy p-up (350/350, 3.07) when "BAM!", the engine locks up. The engine's completely locked up, the starter wouldn't budge it. Later I pour some water in it (b/c the radiator's dry) and it pours right out of the oil pan. To my 18 year old astonishment there were 3 holes in my oil pan, the largest looked like a shot gun blast about 3 in. round. Upon disassembly of the engine I found 3 mangled rods (one of which was twisted 180 degrees) and a good size hole in one of the cylinder walls. My grandfather, who used to rebuild engines, swears that I could not have been doing less that 110mph to blow the engine that badly. Now that I'm thinking about it, 9 neary later, I may have been before I dropped down to my crusing speed of 80.

I just thougt I'd share a little story. I'm working on 25 posts so I can show a pic of my car.
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Old 05-08-2004, 06:07 AM
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That blowed up real good!

Melt a hole in a piston or break a ring or throw a rod and you have a blown motor. Grenade is another term I have heard used when a motor blows.


Tazz


Rat Rods Rule!
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Old 05-11-2004, 10:49 PM
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a high speed come-apart.

usually smokes everything but intake, carb and headers.

cool to watch, sucks to rebuild

31
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