---------------------------------------------------------- Engines-List Digest Archive --- Total Messages Posted Wed 08/31/05: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:29 AM - Lycoming O-540 Engines (J. Mcculley) 2. 05:50 AM - Re: Lycoming O-540 Engines (jrc) 3. 07:41 AM - Re: Lycoming O-540 Engines (MLSRV6@aol.com) ________________________________ Message 1 _____________________________________ Time: 04:29:22 AM PST US From: "J. Mcculley" Subject: Engines-List: Lycoming O-540 Engines --> Engines-List message posted by: "J. Mcculley" I understand there is an STC available to convert the 235 HP O-540 Lycoming to 260 HP. Does anyone have experience with this? Where can the paperwork be found? What is known about the approved redline operating RPM that goes with this? Any experience with operating lifetime/reliability after such a conversion? Any measured data on percentage increase in climb rate before versus after this degree of power increase in some specific aircraft? Any other helpful decision data points/opinions? Thanks, Jim McCulley ________________________________ Message 2 _____________________________________ Time: 05:50:20 AM PST US From: "jrc" Subject: Re: Engines-List: Lycoming O-540 Engines --> Engines-List message posted by: "jrc" Greg Iles has done it by 337, for his Cherokee 235. It converts to 8.5 compression and uses a Comanche 260 exhaust. JimC ----- Original Message ----- From: "J. Mcculley" Subject: Engines-List: Lycoming O-540 Engines > --> Engines-List message posted by: "J. Mcculley" > > > I understand there is an STC available to convert the 235 HP O-540 > Lycoming to 260 HP. Does anyone have experience with this? Where can > the paperwork be found? ________________________________ Message 3 _____________________________________ Time: 07:41:43 AM PST US From: MLSRV6@aol.com Subject: Re: Engines-List: Lycoming O-540 Engines --> Engines-List message posted by: MLSRV6@aol.com I would check to see if there is a Cherokee club online, or check with the E.A.A........ mikel