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M14P, V8 - Engine weights

https://www.murphybuilders.net/viewtopic.php?f=1&t=1708

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M14P, V8 - Engine weights

Posted: Fri Feb 17, 2012 9:21 pm
by John Worden
Hi;
Grant provided some numbers for the radial installation - see below.
I also weighed my engine assembly recently with a calibrated gauge:
Aluminum 350 complete with headers, starter, carburetor, flywheel, harmonic
balancer,
oil pan, and the Geschwender PSRU. Weight is 460 pounds +/- 10.
Not included in this number are the water pump, alternator, distributor,
oil pump, and mufflers if used.
With a constant speed prop I hope to have about 550 pounds. Murphy's
weight for the IO540
and prop was 480 I believe.
I have a photo of my engine assembly as weighed at:
http://www.geocities.com/alternateairpower/worden.html

Regarding the Marcotte unit - Is there enough offset to get the prop shaft
high enough from the ground?


John SR012

X-From_: murtech@murphyair.com Fri Sep 14 08:19:43 2001
Reply-To: "Murphy Technical Department" <murtech@murphyair.com>
From: "Murphy Technical Department" <murtech@murphyair.com>
To: "John Worden" <worden@owt.com>
Subject: Re: Propeller dia
Date: Fri, 14 Sep 2001 08:15:00 -0700
X-Mailer: Microsoft Outlook Express 5.00.2919.6600
X-MDaemon-Deliver-To: worden@owt.com
X-Return-Path: murtech@murphyair.com
X-MDRcpt-To: worden@owt.com
X-MDRemoteIP: 192.168.0.3


John Hi
The engine alone when weighed was 472lbs. the prop is close to 60 then the
peripherals are probably another 60 to 80 including the motor mount. Its
heavy. No wonder the engines have a reputation for durability.
Grant McDaniel
Technical Support
Murphy Aircraft Mfg. LTD.
----- Original Message -----
From: "John Worden" <worden@owt.com>
To: "Murphy Technical Department" <murtech@murphyair.com>
Sent: Thursday, September 13, 2001 9:11 PM
Subject: Re: Propeller dia

Hi Grant - good to hear from you.
Thanks for the reply. Just out of curiosity would you know what the
installed weight of the radial and prop is?

thanks again

John

At 10:25 AM 9/13/01 -0700, you wrote:
John Hi
The New Radial Super Rebel has a 96" diameter prop on the 3500 gear legs
which are 2" taller than the regular gear legs. The tires presently being
used are 600 X 850 which stand about 22.5" high. We regularly wheel land
the
aircraft and no ones hit the prop yet. If your going to use the 2500
gear
legs your probably restricted to 94" prop diameter.
Grant McDaniel
Technical Support
Murphy Aircraft Mfg. LTD.
----- Original Message -----
From: "John Worden" <worden@owt.com>
To: <murtech@murphyair.com>
Sent: Wednesday, September 12, 2001 5:19 PM
Subject: Propeller dia



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M14P, V8 - Engine weights

Posted: Fri Feb 17, 2012 9:21 pm
by Mike Kimball
What engine is that?!! Looks very nice, but doesn't look like an LS-1 or
LS-6. And it's carbureted which is what I want!!! Thought I would have to
use the computerized injection that comes with the LS series. I'm not too
nervous about the reliability of the computer and the rest of the injection
system. But the COST of those components makes me nervous. Can't beat a
good carburetor for reliability and low cost. What carb is that? Have you
figured out how to get cockpit adjustable mixture? How much did the
Geschwender set you back? That's what an acquaintance in Texas is using on
his Chevy V8 powered Mustang replica. Man am I glad to hear of another
Super Rebel builder putting a V8 on the nose! How are you going about
fabricating the engine mount? I see some Summit Racing catalog influence
too. I hope you are ahead of me so that you can make all the mistakes
before I do!

Mike Kimball
SR#044

-----Original Message-----
From: murphy-rebel@dcsol.com [mailto:murphy-rebel@dcsol.com]On Behalf Of
John Worden
Sent: Tuesday, October 23, 2001 5:18 PM
To: murphy-rebel@dcsol.com
Subject: M14P, V8 - Engine weights


Hi;
Grant provided some numbers for the radial installation - see below.
I also weighed my engine assembly recently with a calibrated gauge:
Aluminum 350 complete with headers, starter, carburetor, flywheel, harmonic
balancer,
oil pan, and the Geschwender PSRU. Weight is 460 pounds +/- 10.
Not included in this number are the water pump, alternator, distributor,
oil pump, and mufflers if used.
With a constant speed prop I hope to have about 550 pounds. Murphy's
weight for the IO540
and prop was 480 I believe.
I have a photo of my engine assembly as weighed at:
http://www.geocities.com/alternateairpower/worden.html

Regarding the Marcotte unit - Is there enough offset to get the prop shaft
high enough from the ground?


John SR012

X-From_: murtech@murphyair.com Fri Sep 14 08:19:43 2001
Reply-To: "Murphy Technical Department" <murtech@murphyair.com>
From: "Murphy Technical Department" <murtech@murphyair.com>
To: "John Worden" <worden@owt.com>
Subject: Re: Propeller dia
Date: Fri, 14 Sep 2001 08:15:00 -0700
X-Mailer: Microsoft Outlook Express 5.00.2919.6600
X-MDaemon-Deliver-To: worden@owt.com
X-Return-Path: murtech@murphyair.com
X-MDRcpt-To: worden@owt.com
X-MDRemoteIP: 192.168.0.3


John Hi
The engine alone when weighed was 472lbs. the prop is close to 60 then the
peripherals are probably another 60 to 80 including the motor mount. Its
heavy. No wonder the engines have a reputation for durability.
Grant McDaniel
Technical Support
Murphy Aircraft Mfg. LTD.
----- Original Message -----
From: "John Worden" <worden@owt.com>
To: "Murphy Technical Department" <murtech@murphyair.com>
Sent: Thursday, September 13, 2001 9:11 PM
Subject: Re: Propeller dia

Hi Grant - good to hear from you.
Thanks for the reply. Just out of curiosity would you know what the
installed weight of the radial and prop is?

thanks again

John

At 10:25 AM 9/13/01 -0700, you wrote:
John Hi
The New Radial Super Rebel has a 96" diameter prop on the 3500 gear
legs
which are 2" taller than the regular gear legs. The tires presently
being
used are 600 X 850 which stand about 22.5" high. We regularly wheel
land
the
aircraft and no ones hit the prop yet. If your going to use the 2500
gear
legs your probably restricted to 94" prop diameter.
Grant McDaniel
Technical Support
Murphy Aircraft Mfg. LTD.
----- Original Message -----
From: "John Worden" <worden@owt.com>
To: <murtech@murphyair.com>
Sent: Wednesday, September 12, 2001 5:19 PM
Subject: Propeller dia

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M14P, V8 - Engine weights

Posted: Fri Feb 17, 2012 9:21 pm
by John Worden
Mike;

You are right - it is NOT an LS1.
The engine is a standard 350 chevy but built with all aftermarket parts.
The block is a GM
Performance Part (#10185075). Several other vendors also make aluminum
blocks for both the 350 and the 454-502 engines. I know Dart makes aluminum
blocks as well as Brodick. I have seen the Dart blocks in the Summit
catalog once or twice for $3800. The nice thing about going this route
rather than the LS1 is that there are tons of parts available.
Summit has the ACDelco/GM Performance Parts Catalog listed on
page 64 of their latest catalog(Jan-Feb 2002). Another great book
is "Chevrolet Power" put out by GM (part number is 24502488).
Not all GM dealers can sell GM Performance Parts however.
There is a leaning device available for some Holley carbs from Tom McNeilly.
I don't know if I will need two or not. It may be enough to lean the
primary barrels only. My carb is a 600cfm Holley 4776c model
with mechanical secondaries and manual choke.
I may run without leaning initially.
I welded up my own motor mount. I hung the motor from an engine
hoist and with c-clamps and bailing wire I held the motor in position
while I cut and tack welded the major parts. It has been a learning
experience and I will be modifying the mount to accept the Geschwender.
Its' hard to tell what the Geschwender cost - I bought the business!
I am assembling 10 units now and will see how things progress. If there
is a sufficient market I will have more castings made.
The price for one now is $6500.
See more at http://www.geocities.com/alternateairpower/index.html

John

At 10:39 AM 10/24/01, you wrote:
What engine is that?!! Looks very nice, but doesn't look like an LS-1 or
LS-6. And it's carbureted which is what I want!!! Thought I would have to
use the computerized injection that comes with the LS series. I'm not too
nervous about the reliability of the computer and the rest of the injection
system. But the COST of those components makes me nervous. Can't beat a
good carburetor for reliability and low cost. What carb is that? Have you
figured out how to get cockpit adjustable mixture? How much did the
Geschwender set you back? That's what an acquaintance in Texas is using on
his Chevy V8 powered Mustang replica. Man am I glad to hear of another
Super Rebel builder putting a V8 on the nose! How are you going about
fabricating the engine mount? I see some Summit Racing catalog influence
too. I hope you are ahead of me so that you can make all the mistakes
before I do!

Mike Kimball
SR#044


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