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walker · 08-20-2004, 10:52 PM

Actually the high octane, which has more complete combustion at higher compression levels does not burn completly at lower compression levels. This is due to the fact that it has yummy chemicals in it to slow down the burn and inhibit preignition. Do a google under octane ratings, it will show a lot of discussion on the subject. Higher octane gas does not burn as fast.
You are right, '86, on the timing issue though.
Try this web site for some info on Octane http://chemistry.about.com/cs/howthi...a070401a_2.htm

08-20-2004, 10:52 PM	#9
walker Registered User Join Date: Jul 2003 Location: north of Phx AZ about 30 miles Posts: 698	Actually the high octane, which has more complete combustion at higher compression levels does not burn completly at lower compression levels. This is due to the fact that it has yummy chemicals in it to slow down the burn and inhibit preignition. Do a google under octane ratings, it will show a lot of discussion on the subject. Higher octane gas does not burn as fast. You are right, '86, on the timing issue though. Try this web site for some info on Octane http://chemistry.about.com/cs/howthi...a070401a_2.htm __________________ Andy,Phx AZ '67 C-10 (Ahhh, done at last. Well there is that disk front end I want to put in and...) "23 C-Cab-sold '48 Ford 8N tractor(still working) '67 Scout(Now on the road) '70 MG B.-sold Last edited by walker; 08-20-2004 at 11:14 PM. Reason: add info