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O320 to O360 conversion

 
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JAYRES(at)entergy.com
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PostPosted: Mon Jan 30, 2006 12:01 pm    Post subject: O320 to O360 conversion Reply with quote

I have an RV6A with on O320 which I am currently flying. I am rebuilding an O360 which I plan to use in an RV7A that I am building. I have heard that the break-in for a rebuilt engine is to run it full throttle for several hours initially. Unfortunately, that is not the way I want to break in my newly built RV7A on the first few flights.

A friend suggested putting the O360 on my currently flying RV6A to break it in since it is already flying and I am familiar with it. Seems like a good idea to me.

My question is:

Can this be done without modifying my existing cowl on the RV6A?

Does anyone out have any experience with changing over from an O320 to and O360?

Jimmy Ayres
RV6A - flying
RV7A - building


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low pass



Joined: 10 Jan 2006
Posts: 32
Location: Houston

PostPosted: Mon Jan 30, 2006 12:14 pm    Post subject: Re: O320 to O360 conversion Reply with quote

Sounds like almost as much hassle as finding a test stand and breaking it in on the ground. Ever consider this option?

Bryan


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BPA(at)bpaengines.com
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PostPosted: Mon Jan 30, 2006 12:41 pm    Post subject: O320 to O360 conversion Reply with quote

Jimmy,

The cowling I wouldn't think would need modification, but the engine
baffling would as the 0-360 is wider than the 0-320.

Engine break-in does not have to be done at full throttle, but rather at
high MP settings. 25-26 square is ideal as long as temps and pressures
are normal. It does require a (few hours) but not several hours at a
time. (unless your lucky)

Hope this helps,

Allen Barrett
Barrett Precision Engines, Inc
www.barrettprecisionengines.com

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lifeofreiley2003(at)yahoo
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PostPosted: Mon Jan 30, 2006 1:06 pm    Post subject: O320 to O360 conversion Reply with quote

Longer cowl and mount on the 320 on the RV7 and I believe that's the case on the RV6 too. I would test stand break in before fighting the transfer.

Darrell
do not archive



"AYRES, JIMMY L" <JAYRES(at)entergy.com> wrote:


I have an RV6A with on O320 which I am currently flying. I am rebuilding an O360 which I plan to use in an RV7A that I am building. I have heard that the break-in for a rebuilt engine is to run it full throttle for several hours initially. Unfortunately, that is not the way I want to break in my newly built RV7A on the first few flights.

A friend suggested putting the O360 on my currently flying RV6A to break it in since it is already flying and I am familiar with it. Seems like a good idea to me.

My question is:

Can this be done without modifying my existing cowl on the RV6A?

Does anyone out have any experience with changing over from an O320 to and O360?

Jimmy Ayres
RV6A - flying
RV7A - building




"Do Not Archive"

Darrell Reiley

RV7A "Reiley Rocket"
N622DR Reserved





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Ollie Washburn



Joined: 10 Jan 2006
Posts: 56
Location: Central Florida

PostPosted: Mon Jan 30, 2006 1:29 pm    Post subject: O320 to O360 conversion Reply with quote

I have never read that the eng should be run wide open to break in. However
they do want you to run at high power settings for the first few hours.
Ollie
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Ollie RV6-A & Rans S7S
Central FL
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Bruce(at)glasair.org
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PostPosted: Mon Jan 30, 2006 6:52 pm    Post subject: O320 to O360 conversion Reply with quote

Usually a prolonged full power run is the last gasp before pulling the jugs
on an engine that consumes to much oil after overhaul.

Bruce
www.glasair.org


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deruiteraircraftservices(
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PostPosted: Tue Jan 31, 2006 2:12 am    Post subject: O320 to O360 conversion Reply with quote

Hi,

I've not seen the origin on this tread, Lycoming's break in procedure tells
you to keep ground running to a minimum, use 75% power and for 5 min every
hour full throttle, and of course avoid shock cooling. Run the engine on
Straight 80 until such time oil consumption is established.

Re: the subject line, it is possible since the cast for the crankcase is the
same, however, everything else has to be changed, including the crank. The
cam is the same though in a lot of cases. A good project if you have nothing
better to do with your time and money Smile

---


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