The Murphy Builders Site

Hi Guys: I have a chance to acquire a Lyc. IO 320 B1A for my Rebel, currently under construction. My concern is the lower rear throttle intake position seems to be to long for the normal Murphy engine mount. It appears to be a couple of inches past the mags. Has anyone mounted one of these engines on a Rebel ? This particular engine has been removed from a twin Comanche. I would appreciate any information. Thanks in advance. Trevor Philbrick



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Hi Trevor !

Other than the air intake position, there might be some other issues !

That engine has a hollow crank, for constant speed props - there is
an AD on inspections for corrosion inside the crank ! Also, it has
high compression, so MUST have 100 LL fuel - expensive, and might
become hard to get sooooooon .....

As well, being injected, you'll need a fuel pump and guage, with
a bit more complexity in installation and maintenance - and the usual
"hot start" problems. ;-) :-)

Sounds like you might be better to wait for a nice O-320-E2D,
or similar ..... ;-) :-) (unless it's a REAL bargain !)

.......bobp

-------------------------------orig.-------------------------
On Tuesday 18 October 2005 07:44 pm, Robert and Olga Johnson wrote:

Hi Guys: I have a chance to acquire a Lyc. IO 320 B1A for my Rebel,

currently under construction. My concern is the lower rear throttle intake
position seems to be to long for the normal Murphy engine mount. It appears
to be a couple of inches past the mags. Has anyone mounted one of these
engines on a Rebel ? This particular engine has been removed from a twin
Comanche. I would appreciate any information. Thanks in advance. Trevor
Philbrick

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Or you can come up and haggle Bob/Trevor for a regular intake/oil sump
and -4 carb to put on it. I have some of both here!

Wayne

----- Original Message -----
From: "Bob Patterson" <beep@sympatico.ca>
To: <rebel-builders@dcsol.com>
Sent: Tuesday, October 18, 2005 11:11 PM
Subject: Re: IO 320 B1A

Hi Trevor !

Other than the air intake position, there might be some other issues !

That engine has a hollow crank, for constant speed props - there is
an AD on inspections for corrosion inside the crank ! Also, it has
high compression, so MUST have 100 LL fuel - expensive, and might
become hard to get sooooooon .....

As well, being injected, you'll need a fuel pump and guage, with
a bit more complexity in installation and maintenance - and the usual
"hot start" problems. ;-) :-)

Sounds like you might be better to wait for a nice O-320-E2D,
or similar ..... ;-) :-) (unless it's a REAL bargain !)

.......bobp

-------------------------------orig.-------------------------
On Tuesday 18 October 2005 07:44 pm, Robert and Olga Johnson wrote:

Hi Guys: I have a chance to acquire a Lyc. IO 320 B1A for my Rebel,

currently under construction. My concern is the lower rear throttle intake
position seems to be to long for the normal Murphy engine mount. It

appears

to be a couple of inches past the mags. Has anyone mounted one of these
engines on a Rebel ? This particular engine has been removed from a twin
Comanche. I would appreciate any information. Thanks in advance. Trevor
Philbrick

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If you mean the carb is mounted further back on the oil sump,
this is what I have on mine. I had to change and refit the
throttle and mixture control mechanism and it was still tight
against the firewall. Mine is a conical mount 0320, originally an
A1A, I think.

Are you sure you want to use fuel injection on a Rebel?

Walter

-----Original Message-----
From: mike.davis@dcsol.com
[mailto:mike.davis@dcsol.com]On Behalf Of
Robert and Olga Johnson
Sent: Tuesday, October 18, 2005 4:45 PM
To: rebel-builders
Subject: IO 320 B1A


Hi Guys: I have a chance to acquire a Lyc. IO 320 B1A
for my Rebel, currently under construction. My concern
is the lower rear throttle intake position seems to be
to long for the normal Murphy engine mount. It appears
to be a couple of inches past the mags. Has anyone
mounted one of these engines on a Rebel ? This
particular engine has been removed from a twin
Comanche. I would appreciate any information. Thanks
in advance. Trevor Philbrick



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Walter, Bob and Wayne: Thanks for the quick response. Walter, your question
on why, got my curiosity up. have you had problems with fuel injection or
know of any. I thought this would be a more efficient engine. Wayne, I will
contact you later today to discuss your proposal. Bob P. - What would you
consider to be a "real bargain". Thanks guys. - Trevor Philbrick
----- Original Message -----
From: "Walter Klatt" <Walter.Klatt@shaw.ca>
To: <rebel-builders@dcsol.com>
Sent: Tuesday, October 18, 2005 11:19 PM
Subject: RE: IO 320 B1A

Are you sure you want to use fuel injection on a Rebel?

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As Bob P. just mentioned, FI gives you extra weight, complexity
and vapour lock problems. The Rebel is a high wing and works
great with a gravity feed system, much safer, IMO. I use a 4
EGT/CHT engine monitor together with a fuel flow monitor on my
carbed 0320, which allows me to adjust the mixture and RPMS at
any altitude to obtain the most efficient fuel usage for a given
power setting.

In particular, if you are going floats, I would not want FI. The
risk of not starting immediately after push off from a dock,
could be more than embarrassing, as the wind or currents will
quickly push your plane where you don't want it. And you will
probably require a larger battery, for that extra reserve power
that you will need when (not if) you have vapour lock. With a
carb, you can get away with a small 13 pound Odyssey battery
which I use.

Plus I am not sure how mogas works with FI at higher altitudes
(10,000+ feet). Works fine with my gravity feed carb system.

Walter

-----Original Message-----
From: mike.davis@dcsol.com
[mailto:mike.davis@dcsol.com]On Behalf Of
Robert and Olga Johnson
Sent: Wednesday, October 19, 2005 6:55 AM
To: rebel-builders@dcsol.com
Subject: Re: IO 320 B1A


Walter, Bob and Wayne: Thanks for the quick response.
Walter, your question
on why, got my curiosity up. have you had problems
with fuel injection or
know of any. I thought this would be a more efficient
engine. Wayne, I will
contact you later today to discuss your proposal. Bob
P. - What would you
consider to be a "real bargain". Thanks guys. - Trevor
Philbrick
----- Original Message -----
From: "Walter Klatt" <Walter.Klatt@shaw.ca>
To: <rebel-builders@dcsol.com>
Sent: Tuesday, October 18, 2005 11:19 PM
Subject: RE: IO 320 B1A

Are you sure you want to use fuel injection on a Rebel?

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G'day Trev !

(not sure WHY this e-mail came with "Robert & Olga Johnson" as the sender though ?!?!?)

I have an IO-320 B1A in my Rebel too (came from a Comanche twin)

I replaced the sump with an IO-360 FRONT induction sump
(360's have TUNED induction pipes - 320's don't !)

Check the wreckers in the States / Canada ... (I actually got the sump from Bart Lalond in Canada !)

Rick
541R
----- Original Message -----
From: Robert and Olga Johnson
To: rebel-builders
Sent: Wednesday, October 19, 2005 9:44 AM
Subject: IO 320 B1A


Hi Guys: I have a chance to acquire a Lyc. IO 320 B1A for my Rebel, currently under construction. My concern is the lower rear throttle intake position seems to be to long for the normal Murphy engine mount. It appears to be a couple of inches past the mags. Has anyone mounted one of these engines on a Rebel ? This particular engine has been removed from a twin Comanche. I would appreciate any information. Thanks in advance. Trevor Philbrick



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Hi Trevor !

A real bargain would be say, > $5,000 for a low time (~200 hr.)
engine. Could be more involved to fix than just adding a carb -
the cam is likely different, as is the compression..... Then there's
the fuel system, the cowling, and increased danger (high pressure fuel
spraying over the engine & exhaust in an accident), etc. ...

One would think that FI would be 'more efficient' - and it
would, on modern automotive engines. Unfortunately, "aircraft"
engine technology is still a bit behind - I liken the mags & carb
to those of a 1938 Case farm tractor, and "aircraft" fuel injection
systems are somewhere about 1957 Chevy technology ! :-(
Just MHO ...

As Walter pointed out, fuel injection on floats is asking
for trouble - no matter what others say, <my> experience has been
difficulty starting when hot, and I've seem MANY others with
the same difficulties ! YMMV !! ;-)

......bobp

-------------------------------orig.-------------------------
On Wednesday 19 October 2005 09:54 am, Robert and Olga Johnson wrote:

Walter, Bob and Wayne: Thanks for the quick response. Walter, your

question

on why, got my curiosity up. have you had problems with fuel injection or
know of any. I thought this would be a more efficient engine. Wayne, I

will

contact you later today to discuss your proposal. Bob P. - What would you
consider to be a "real bargain". Thanks guys. - Trevor Philbrick
----- Original Message -----
From: "Walter Klatt" <Walter.Klatt@shaw.ca>
To: <rebel-builders@dcsol.com>
Sent: Tuesday, October 18, 2005 11:19 PM
Subject: RE: IO 320 B1A

Are you sure you want to use fuel injection on a Rebel?

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