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Joined: Feb 2022
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Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Feb 2022
Posts: 59 Likes: 3 |
What grade of octane should run in a orginal 1932 6 cyl motor & do I need to find some led additive?. Thanks
Last edited by Kray1932; 02/20/22 04:17 PM.
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Joined: Jan 2002
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ChatMaster - 25,000
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ChatMaster - 25,000
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The lowest octane you can find as the low compression engine was designed to nun on 80 octane,
Lead is not necessary and you are better off with out t. It was only used as a cheap way to in crease octane (made gas burn slower)
I doubt if they even make a lead additive any more because it did not help anything and did not actually contain lead.
Gene Schneider
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Joined: Feb 2022
Posts: 59 Likes: 3
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Feb 2022
Posts: 59 Likes: 3 |
So curious to what was octane rating back in 1932 ?. I’m assuming 80 with lead was it ?. From what I’m reading spark knock is what hard on everything. Thanks for the information.
Last edited by Kray1932; 02/20/22 06:58 PM.
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Joined: Jan 2002
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ChatMaster - 25,000
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In 1932 regular was about 65 octane and NO lead.
Ethyl grade (called premuim today) and was aout 70 octane because it contained lead which was a cheap way to raise the octane.
Today better refining raises the octane.
Gene Schneider
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1 member likes this:
Ed_Osier |
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i run regular unleaded from the local pump
unfortunate around here only Ethanol is available. i put in the StaBil 360 additive, and has been dong fine for years !!
AACA - VCCA - Stovebolt - ChevyTalk
Love the Antique Chevrolet's from 1928-1932
The Beauty, Simplicity, History, and the Stories they Tell
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Actually, the average octane for autos in the early thirties was on 40 and that’s why they carboned up so much. The average octane was around 60-65 because aviation fuel was 75-80 but it wasn’t intended for cars. Our low compression cars weren’t designed to run on high octane fuel and just increasing compression caused the low octane but highly volatile fuel to explode simply by compression rather than ignition so it would cause high wear on engines because the fuel was exploding before the piston came up fully. This condition is referred to as pre knock.
It was actually Jimmy Doolittle, working for Shell oil who saw the need for high octane aviation fuels because they were more stable and could handle high compression, something Doolittle knew that was needed for high performance aircraft.at the start of WWII, Germanys fighters were out performing the British aircraft because they were running 90 octane to Englands 75 plus they had fuel injection. Once the English got our 100 octane fuel, the British aircraft came alive. Japan suffered even more with fuel not doing better than 85-87 oct. At the end of the war in the pacific, many Japanese fighter aircraft were flown stateside and tests were done with our high octane fuel. Almost every single fighter, and especially the Shinden Kai fighter, out performed all the American aircraft. Jimmy Doolittle was way ahead of his time and probably one of the main reasons why the Allies won the war.
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Joined: Aug 2009
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Shade Tree Mechanic
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Shade Tree Mechanic
Joined: Aug 2009
Posts: 124 Likes: 1 |
Key Oil Company in Bowling Green, KY has a local terminal with 87 octane without ethanol for sale at the pump. A lot of local fuel delivery companies (farm, heavy equipment users) in our area have fuel without ethanol but it has a higher octane of 93 for use in 2-stroke equipment (chainsaws, weed eater, etc.).
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