Greg, using ATF is a “common”
method of freeing up stuck Apex seals. When left sitting for long
periods, people who owned older RX-7s would go out one morning and attempt to
start their autos. They would hit the ignition and the engine would wiz over
with no compression. A number decided that the *&@) engine was shot
and practically give a way the auto and engine.
Pull a spark plug from each chamber,
pour in some ATF, Marvel Mystery oil, WD-40 or your favorite light weight oil ,
let it sit a while (over night seemed to be the most common waiting period) and
the next morning – Zooooommmmmmm!! Compression and a running engine.
So for old engine or engines with worn or
stuck seals, a fluid like ATF may help compression at lower rpm and assist in
starting, I doubt very seriously they would do anything for you at higher
rpm. But, someone like Lynn
could enlighten us all about this “urban myth”.
Ed
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]
On Behalf Of Greg Ward
Sent: Friday, December 19, 2008
8:54 PM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re: engine
preservation
I just read a great article on running ATF through the
Rotary, supposedly to loosen up the apex seals, etc. (high detergent
level). Raves on about having done this multiple times in many engines, and
supposedly power increases of up to 20% +. Anybody done this?
Results?
Lancair 20B N178RG in Progress
----- Original Message -----
Sent: Friday, December
19, 2008 5:35 PM
Subject: [FlyRotary] engine
preservation
Lynn, thanks for
the heads up on the engine. Even though it is in a heated garage with hot
water heat in the floor, I pulled the plugs and put oil in each rotor cavity
and rolled it over 8 revolutions and duct taped the exhaust. That should
even oil the muffler bearings when I start it again. JohnD
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