[FlyRotary] Re: Engine damage
thoughts
Something I
will ask is at what rpm and power setting did the
engine seize at??
The
engine did NOT seize. As I stated before, it quit because I
tried to throttle up with the mixture set way lean. I have no
reason to believe the engine is damaged, aside from what feels like a
bit less compression than normal.
As for
the bearings, Bruce also said the bearings would be the first to go,
but I have to wonder now if that isn't a car vs airplane experience.
He sees car engines that have run for some time without oil, but at
very low power settings. In that case, the bearings may be the
first to go. In your case, you ran at high power, which would
probably generate enough heat to seize the engine, possibly before the
bearings got damaged.
I
still find it very hard to believe the engine ran without oil pressure
for more than about 30 seconds, and did so at very lean mixture, and
idle power. I can't see how this is any more damaging
than cranking the engine several times. Maybe
I'll learn something from the oil filter tomorrow.
Cheers,
Rusty
The low compression is from
the side seals being stuck from rotor damage but I bet its light and
you can save the rotors by tapper cutting them, also you may have no
side housing damage as I have toasted the rear rotor and saved the
front rotor under high loads and in you case the damage may be light
on the rear one to.
Still the engine need to come apart
as you risk doing more damage by running it.
Also I will note that in a seizure
the apex seals never get damaged, just the side seals so it could be a
cheep rebuild, some side seals and gaskets may do it for parts and
maybe tapper the rotors if it isn't done already.
Ken
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