Blown motor
07-20-04, 11:44 PM
#2
There are a wide variety of things that can be considered a "blown" motor. Most of the time, it indicates a failure inside the block (as in, requires a rebuild to fix).
The simplest one is a blown coolant seal. If the engine overheats, the coolant seal often gets squashed & stretched, and generally stops sealing. This will lead to coolant getting into the combustion chamber, as well as exhaust gas leaking out (depending on where the seal failed) into the coolant.
Another fairly common failure is an apex seal letting go. This usually results in severe damage to the rotor & housing from the hard metal pieces flying around. This is often caused by detonation, but can be caused by a wide variety of other things, including the seal wearing down, or a chunk of carbon coming loose & ripping things up.
Other failures can include carbon lock, where a piece of carbon breaks free and jams the motor (not really a blown engine, but still usually requires a rebuild to fix), bearings failing due to oil starvation (often from a failed oil pellet in the front of the e-shaft), cracked stationary gears (rare), rotors getting deformed from overboost (also rare), etc.
-=Russ=-
The simplest one is a blown coolant seal. If the engine overheats, the coolant seal often gets squashed & stretched, and generally stops sealing. This will lead to coolant getting into the combustion chamber, as well as exhaust gas leaking out (depending on where the seal failed) into the coolant.
Another fairly common failure is an apex seal letting go. This usually results in severe damage to the rotor & housing from the hard metal pieces flying around. This is often caused by detonation, but can be caused by a wide variety of other things, including the seal wearing down, or a chunk of carbon coming loose & ripping things up.
Other failures can include carbon lock, where a piece of carbon breaks free and jams the motor (not really a blown engine, but still usually requires a rebuild to fix), bearings failing due to oil starvation (often from a failed oil pellet in the front of the e-shaft), cracked stationary gears (rare), rotors getting deformed from overboost (also rare), etc.
-=Russ=-
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