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Re: Re: Re: Lead additive
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Posted by Bob Kerr on December 16, 2001 at 07:55:54 from (205.188.197.23):
In Reply to: Re: Re: Lead additive posted by Bill Jones on December 15, 2001 at 23:06:57:
Good info Bill! I found out that the gasoline used pre 1918 was regular lighting gasoline or white gas which we call coleman fuel now. The oil companys decided that autos didn't need the super clean white gas and they could get more gallons of "auto Gasoline" from a barrel of crude since it wasn't as "cleanly refined" as the lighting gasoline.. I read this in a copy of Dykes automobile encylopedia 1919 edition. Dykes metioned that some cars were having problems running on the "new fuel". I wonder what the octane of white gas is? That is what they would have ran in the 1912 caddy. I know the compression ratio on the most of the old hand crank engines was kept low so they wouldn't be impossible to crank start by hand, there were some cars as early as 1912 with self starers of different types but most of the electric starters back then were not real strong. I had a guy tell me the compression ratio on my 10-20 was about 4:1. It is fairly easy to crank (new rings and valves)but I wouldn't want much more compression and have to crank it much. I was on top Pikes Peak this summer and saw an old bronze plaque off away from the touristy stuff, that read Engine test bed for a High Altitude Liberty Aircraft engine, US ARMY 1918. the plaque also stated that the engine was equipped with a "turbo superchager".Not sure what that is exacly unless they were just refering to a turbo forcing air or if there was a supercharger and a turbo running together somehow. I wonder if they used lead in that test? I know they were working on lead in aviaion later than that but that is the oldest reference I have seen as far as a high compression, pressure boosted engine. I have some pictures of the trolley track iron framework at the site if anyone wants to see them.
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