 Rotax 582 cold seizure
Ray, I don't have an answer for you but I am most interested. My 582 s a
grey head and a liitle more prone to this type of failure. I'm going to copy
your question to the Yahoo rotax group and see if it gets any good answers
there.
"Ray" <raybcorbett.nz> wrote in message
news:1155194335.350698.162830@h48g2000cwc. o...
> maybe someone can help me out with this one a friend of mine was going
> to a farm strip early ish one morning tempreture was cool about 8 deg c
> he did a good warm up taxied out ,took of and promptly seized at the
> top of the climb out no big problem at a 1000 ft above the airfield
> ,anyway I stripped the top end of the motor and sure enough one piston
> had seized giving the classic four corner marks of a cold seizure and
> we put it down to not warming up enough, the engine had done just over
> 200 hrs and was well maintained and the other piston was not marked at
> all
> So the motor was rebuilt with new parts I ground run it for approx 20
> mins at vairying loads but not full power and handed it over to my
> friend who started the rotax run in procedure with the trike tied to
> the hanger at 59 mins at the full power run it seized again, on
> stripping it was exactly the same as before with the four corner marks
> of a cold seizure ,he assures me he had the right fuel mix 50 to one
> the jetting is correct piston bore clearances are correct and again the
> other piston looks perfect
> the engine is in an Airborne outback trike it is a blue head motor and
> it has a new thermostat
> he tells me all temps were correct
> I know the rotax run in may be a bit aggressive maybe he should have
> gone a little easyer
> any help would be most appriciated
> thanks
> Ray
>
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