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Posted for "Ed Anderson" <eanderson@carolina.rr.com>:
Kevin,
I have not seen a 20B fuel rail. However, on the 13B fuel rail there is a
"Pulse Dampener" on one end of the secondary fuel rail. That can (and
should) be removed for aviation use. A friend who owns a business repairing
13Bs (20 years experience) tells me that the diaphragm will eventually
fatigue and crack leading to a fuel leak. He knows of several engine fires
caused by this an recommends they not be used. I personally do not use one
and have had no problems. On the other end of the fuel rail (of the 13b) is
a fuel pressure regulator. Some people use that one and some use an after
market pressure regulator, both appear to work fine.
Ed Anderson
RV-6A N494BW 160 Rotary hours
Matthews, NC
the fuel rails on my 20B aren't very compatable with designing a low
profile
intake manifold. I would like to saw the ends off. They appear to have
small diaphrams on them, perhaps for fuel pump pulses? Are these
necessary
for aviation use?
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