Matronics Email Lists Forum Index Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
 
 Get Email Distribution Too!Get Email Distribution Too!    FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Lycoming engine designations

 
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> Engines-List
View previous topic :: View next topic  
Author Message
CardinalNSB(at)aol.com
Guest





PostPosted: Tue Jun 27, 2006 9:57 am    Post subject: Lycoming engine designations Reply with quote

How do I tell the difference between a wide deck and a narrow deck O-360?
 
Which is preferable?
 
Is an O-360 A1A interchangeable with other "A1A" or is there more that I need to know?
 
Thank you, Skip


- The Matronics Engines-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Engines-List
Back to top
BPA(at)bpaengines.com
Guest





PostPosted: Tue Jun 27, 2006 10:30 am    Post subject: Lycoming engine designations Reply with quote

Skip,
 
A narrow deck engine will have ‘internal’ splined nuts, or nuts that will require a wrench that allows you to torque the nut from the inside versus a standard hex nut configuration. Another way to tell is the narrow deck engine will have retainer plates, 2 per cylinder. This is to allow for a thicker torque surface. The wide deck engine does not have these plates. The narrow deck engine has not been produced NEW for several years now and are getting difficult to find.
 
Personally speaking, I prefer the narrow deck cases over wide decks mainly because the ‘thru’ studs screw into the case halves versus ‘body fit’ thu bolts as on the wide decks.
 
An 0-360 A1A is a parallel head carbureted engine whereas the IO-360 A1A is a angle head. This being said, yes it is possible to convert one to or from the other, but it’s not very cost effective. There are several parts that will need to be changed such as cylinders, push rods, push rod tubes, rockers, baffles.
 
 
Allen Barrett
Barrett Precision Engines, Inc.
www.barrettprecisionengines.com
 
 
 
 
--


- The Matronics Engines-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Engines-List
Back to top
klwerner(at)comcast.net
Guest





PostPosted: Tue Jun 27, 2006 10:37 am    Post subject: Lycoming engine designations Reply with quote

The narrow deck has some type if clamps under the nuts on the base of the cylinder.
The wide deck is beefy enough not to require them (i.e. the nuts hold down the cyl. directly!)
 
do not archive
[quote] ---


- The Matronics Engines-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Engines-List
Back to top
dlawhon(at)yahoo.com
Guest





PostPosted: Tue Jun 27, 2006 11:52 am    Post subject: Lycoming engine designations Reply with quote

Allen, one question, I have a narrow deck engine
that is low compression , 7.4 to 1 0320 that doesn't
have the plates , and the info I got (older engines)
was that only the upgraded (ie: 160hp) engines
needed the plates.. can you tell me if some of them
didn't have the plates ?

Danny..

--- BPA <BPA(at)BPAENGINES.COM> wrote:

[quote] Skip,



A narrow deck engine will have 'internal' splined
nuts, or nuts that
will require a wrench that allows you to torque the
nut from the inside
versus a standard hex nut configuration. Another way
to tell is the
narrow deck engine will have retainer plates, 2 per
cylinder. This is to
allow for a thicker torque surface. The wide deck
engine does not have
these plates. The narrow deck engine has not been
produced NEW for
several years now and are getting difficult to find.




Personally speaking, I prefer the narrow deck cases
over wide decks
mainly because the 'thru' studs screw into the case
halves versus 'body
fit' thu bolts as on the wide decks.



An 0-360 A1A is a parallel head carbureted engine
whereas the IO-360 A1A
is a angle head. This being said, yes it is possible
to convert one to
or from the other, but it's not very cost effective.
There are several
parts that will need to be changed such as
cylinders, push rods, push
rod tubes, rockers, baffles.





Allen Barrett

Barrett Precision Engines, Inc.

www.barrettprecisionengines.com
<http://www.barrettprecisionengines.com/>









--


- The Matronics Engines-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Engines-List
Back to top
BPA(at)bpaengines.com
Guest





PostPosted: Tue Jun 27, 2006 12:37 pm    Post subject: Lycoming engine designations Reply with quote

Danny,

Boy! You have an old style narrow deck engine. First series 140-150 HP
engines did not have the plates. Second series, or phase 2 narrow decks
did. These require longer deck studs to incorporate the plates. If I'm
not mistaken this is a Service Instruction and most crankcase repair
shops will upgrade the cases when they do the overhaul on your cases. If
they didn't and you want the upgrade, call them and ask for the longer
deck studs. I recommend the upgrade.

There was another short lived case series that no longer is in
production as well called the 'mid deck' but this is for another
discussion.

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


- The Matronics Engines-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Engines-List
Back to top
Display posts from previous:   
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> Engines-List All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


Powered by phpBB © 2001, 2005 phpBB Group