Engine Compression Ratio

Submitted by Anonymous on

Forums: 

From: Mike S. Reinath <mreinath [at] mail.arc.nasa.gov>
Subject: Engine Compression Ratio
Date: Tue, 17 Nov 1998 07:17:10 -0800
To: <lancair.list [at] olsusa.com>

         <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>>

          <<  Lancair Builders' Mail List  >>

          <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>>

>>

I'm just about ready to order an IO360 engine from Lycon in Visalia,

California (they are on the web at www.lycon.com). They offer a higher

compression piston, 10.1, for a little more horsepower (about 20 more).

Does anyone have any experience with this engine configuration, or can

anyone provide me with some guidance to help me decide whether to select

this option? Thanks.



Mike Reinath

San Jose, CA

Engine Compression Ratio

Submitted by Anonymous on

From: Bob Chesley <rchesley [at] soca.com>
Subject: Re: Engine Compression Ratio
Date: Wed, 18 Nov 1998 10:05:06 -0800
To: <lancair.list [at] olsusa.com>
Message Header


Undecoded Message

         <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>>

          <<  Lancair Builders' Mail List  >>

          <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>>

>>

Mike,

    My IO320 was overhauled at 9:1 compression instead of the designed

8.5:1.  However, the overhauled (Don George in Florida, who has done a lot

of Lancair engines) advised against deviating much from the design figures.

The Sky Ranch Engineering Manual gives real insight and into how many

different "fixes" there have been in aircraft engines over the years and an

understanding that when you make changes there is the possibility of

introducing new "problems."



Bob Chesley

L-320 Builder

Ojai, CA