Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site alice.UUCP Path: utzoo!watmath!clyde!burl!ulysses!allegra!alice!wookie From: wookie@alice.UUCP Newsgroups: net.auto Subject: Re: Octane ratings, 1973 vs 1984 - (nf) Message-ID: <2865@alice.UUCP> Date: Wed, 20-Jun-84 16:37:22 EDT Article-I.D.: alice.2865 Posted: Wed Jun 20 16:37:22 1984 Date-Received: Fri, 22-Jun-84 07:57:28 EDT References: <1541@zehntel.UUCP> Organization: AT&T Bell Laboratories, Murray Hill Lines: 8 The engine test method used for the octane ratings was in an engine with variable compression ratio. The ratio was increased until detonation began and from that info the octane number was deduced by comparing the fuel under test to pure octane. Keith Bauer White Tiger Racing