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Message: <blockquote data-quote="shiroitenshi" data-source="post: 3130558" data-attributes="member: 27518">Usually head won't terangkat unless even the head bolts fail spectacularly (I think it's unlikely, there's 10 of them, and if you were cheapskate enough to REUSE them that often, I have NO COMMENTS.)Blown engine usually means a broken rod, the rod will whack the liner and eject a chunk out of the side of the block. That's why most blown engines will always have a hole at the block. It's not the pressure that makes the hole, it's the broken rod. This is probably the most common damage I see on B16a shortblocks, which is usually traceable to the owner deciding that 9.5K rpm is a good idea on stock valvetrain, and installing an ecu without a revcut.There's also the valve dropping part. This one is the piston has a hole, the rod may or may not break (but it will at the very least be bent beyond repair). The piston has no melted edges/VERY pitted surface that are the telltale signs of detonation.There's also improper installation. The signs will be almost like the valve dropping, except in this case, it's the pistons hitting the valves at high rpm. Cam and stroke cycle = not enough minimum clearances. The rods stretch at high rpm, so if the valves don't touch the piston during installation, there's no guarantee that it won't at high rpm. I think the minimum clearance is quite large for high rpm engines, in the region of 3mm+, esp when they are degreeing the cam.There's also hydrolocking, which can be due to driving over puddle and the intake sucking in quite a bit of water, this one also can break rods, and etc. Hydrolock can also be caused by leaking gaskets, though this is probably not as common.There's others, but I'm sure others can contribute.</blockquote>

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