Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site ariel.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxl!houxm!hogpc!houti!ariel!jlw From: jlw@ariel.UUCP Newsgroups: net.auto Subject: Re: Sources of Leaded gas Message-ID: <584@ariel.UUCP> Date: Wed, 21-Mar-84 08:54:29 EST Article-I.D.: ariel.584 Posted: Wed Mar 21 08:54:29 1984 Date-Received: Thu, 22-Mar-84 01:30:52 EST References: <327@tesla.UUCP> Organization: AT&T-ISL, Holmdel, NJ Lines: 40 There are several sources of leaded high octane gas: 1) Racing fuel is still available in tests above 100 octane. Be sure to send the state and the fed their road use tax on the fuel because I'm sure that the fuel is certified for off road use only. 2) Use avgas. There are two problems: First you are supposed to pay the road use tax. That is the only thing illegal about using the stuff in a car legally allowed to run leaded gas. Second the effect on your car of a gas coumpounded for high altitudes and cold weather is undetermined. 3) Use high test unleaded in a mix of about 75%/25% with regular leaded gas. This gives an octane rating greater than either of the primary ingrediants because the addition of lead to gas is a diminishing returns type thing. But it won't get you up to 100 octane; only to about 95 or 96. 4) Use an octane booster from a racing shop. Warning tetra-ethyl lead is highly toxic!!!. There are alternatives which require modification to the auto: a) Convert to propane which is what the importers of Morgans do. b) Lower the compression by use of a thick headgasket or dished pistons. c) Use some other kind preignition control such as water injection. Joseph L. Wood, III AT&T Information Systems Laboratories, Holmdel (201) 834-3759 ariel!jlw