Here are some pictures of the pseudo Mustang that crashed. It had an in
flight fire.
Pilot got it down and escaped without injury. Airplane pretty well
destroyed.
Engine mount looks familiar.
Peter G
I can see how the rotary exhaust would burn right through that manifold
in short order.
No such things as a 3 inch radius bends. What was he thinking?
I wish I saw it before he crashed it.
Paul Lamar ...Parkes NSW
Paul,
As usual this is desperately sad. I also am finding very high
Egt's around 1850 degrees. Everything is a compromise and my compromise
was
to accept an "ugly" under fuse exhaust system to get the heat out of the
engine bay as quickly as possible. Spoke to a rotary racer re the high EGT
and he said that in racing he has the spark advance up to 42 degrees BTDC.
He advised that 30 plus degrees is normal in high power. I do not know
what
Tracy's ECU does in this regard, but it may be not advancing far enough
which would have a big effect on EGT. A rotary in OZ has just been
dismantled to be P ported after 400 hours running with a Microtech ECU (and
no EGT probes) and found the motor as new. Naturally he has no idea what
the EGT gets to, ignorance is obviously bliss, but he says that the advance
always goes to at least 30 degrees BTDC. I just wish that he had an EGT to
compare, so I am back to guessing. He also has an external exhaust system.
The exhaust pipe on the Mustang looks very small like only 2.5 inches or
less. May be wrong, but regardless the High EGT's is something that has to
be addressed. I just wish I had simple answers like everyone else.
Neil.
Not to worry Mate I'll take a look this afternoon with out the local
media :)
You can get some steel brake line and weld a foot or two to the exhaust
pipe at the port and connect up a water manometer to measure the back
pressure
from you current muffler.
We will also check and see if you get these photos.
Paul Lamar Still in Parkes
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