Please correct me if im wrong but octane is the rating which dictates the flash point, at what temprature the fuel will explode... early and late. Adjusting the mixture can only offer a limited amount of cover-up for this. For different octanes the timing will need to be different. So if im right the timing is what needs to be changed with the octane.
New cars have "ping-sensors" which retards the timing if it suspects pinging. For example: if you use a higher that whats tuned for octane your firing will be late, thus giving less power, so if you were to advance the timing in this situation you would get more power and vise vera with different grades of gas. Justin KR2S ----- Original Message ----- From: "Colin & Bev Rainey" <crain...@cfl.rr.com> To: "KRnet" <kr...@mylist.net> Sent: Monday, March 15, 2004 11:26 PM Subject: KR>Octanes Mark & netters Correct me if I am wrong about aviation carbs, but the range of adjustment has to be set initially, and then is pilot adjustable from there. Also base jetting would have to be correct for total possible richness, true? Colin & Bev Rainey KR2(td) N96TA Sanford, FL crain...@cfl.rr.com or crbrn9...@hotmail.com http://kr-builder.org/Colin/index.html______________________________________ _ to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html