Look at the O200 crank STC for the C85 as simply alternate parts you can use to build the engine. No RPM change, no prop change, etc.
Technically, it raises the displacement from 188 ci to 200 ci and the compression from 6.3:1 to 7.0:1. On a dynometer, power goes up, but in the real world of fixed pitch props, all you can expect is more of your 85 horses available in climb. Fuel consumption goes up a little if you fly all the time at full throttle. If you cruise at the same RPM as before, with the same prop as before, you will go the same speed, produce the same horsepower and burn essentially the same fuel. John Cooper, A&P Skyport Services PO Box 249 4996 Delaware Tnpk Rensselaerville, NY 12147 518 797-3064 Fax 518 797-3865 www.skyportservices.net -----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Monday, October 22, 2007 4:40 PM To: [email protected] Subject: [ercoupe-tech] O200 Crank on a C85 Ok, bear with a dumb question, as followup form the previous thread... What does exactly the O-200 crank, rods and pistons do to a C-85, performance wise? More HP? Does it run at higher RPM? Does it consume more fuel? Does it keep the same prop, or does it need a change like when going from a C-75 to a C85? Eliacim Yahoo! Groups Links
