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07-25-2020, 11:44 PM | #1 |
Member
Join Date: Jul 2020
Location: Fargo North Dakota
Posts: 77
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Is lead still needed?
Few odd questions from a newbie.
I know I can't get leaded gas, but I have lots of local options for Ethanol free. Would you all recommend a lead additive? |
07-25-2020, 11:55 PM | #2 |
Senior Member
Join Date: Oct 2011
Location: Shelton, WA
Posts: 3,800
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Re: Is lead still needed?
Lead was added to gasoline in the 1950s when high compression engines were pinging and needed the lubrication on the valves. You don't need an additive. If you ever have to rebuild the engine you can install hardened seats on the exhaust valves but an old stocker will do fine without the lead. I live near an e-free station and that is all i put in any of my old cars, chain saw, leaf blowers etc that sit around.
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07-26-2020, 08:56 AM | #3 |
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Join Date: May 2010
Location: Alabama
Posts: 3,260
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Re: Is lead still needed?
What year flathead ?? Most all flatheads I’ve been into from the mid to late 30’s on up to around 1950 or 51 had hard seats. I’ve seen some of the 8ba engines that were produced toward the end of the flathead era having the seats ground right into in the block , same for some of the early production flatheads in 32-33.
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07-26-2020, 09:47 AM | #4 |
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Join Date: Jun 2010
Location: San Antonio, Texas
Posts: 16,436
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Re: Is lead still needed?
They started discontinuing hardened seats in 1950 or 51. Truck engines kept them on the exhaust seats only. Rotator valves coming in during the 1951 model year and modern fuels diminished the need for the hardened seats. These engines should at least have hardened seats on the exhaust valves to run unleaded fuel.
Lead additive would be unnecessary for an engine with lower compression. Most flatheads are limited on how high the compression ratio can be taken. The compression chamber has to include room for those valves to work and there is no way to get around that. |
07-26-2020, 11:55 AM | #5 | |
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Join Date: May 2010
Location: Sugar Land, TX
Posts: 4,395
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Re: Is lead still needed?
Quote:
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07-26-2020, 12:24 PM | #6 |
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Join Date: Apr 2017
Location: Texas Gulf Coast
Posts: 727
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Re: Is lead still needed?
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07-26-2020, 04:05 PM | #7 |
Member
Join Date: Jul 2020
Location: Fargo North Dakota
Posts: 77
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Re: Is lead still needed?
Ken/Alabama,
it's a 1940 |
07-26-2020, 09:22 PM | #8 |
Senior Member
Join Date: May 2010
Location: Alabama
Posts: 3,260
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Re: Is lead still needed?
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07-26-2020, 09:22 PM | #9 |
Senior Member
Join Date: May 2010
Location: Qld, Australia
Posts: 4,215
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Re: Is lead still needed?
are you sure about no seats in the early engines, all mine have them in. I have one early 33 eng with stock bore and still looks like factory babbit that came off a farm in 85 and had been in the shed there for years, it has the seats in all
Lawrie |
07-29-2020, 08:33 AM | #10 | |
Senior Member
Join Date: May 2010
Location: New Jersey
Posts: 832
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Re: Is lead still needed?
Quote:
Here in NJ we don't have an ethanol free option, I've been running regular pump gas in my flatheads with no additives for twenty years and haven't had any issues. |
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07-29-2020, 06:23 PM | #11 |
Senior Member
Join Date: Jun 2016
Location: Pahrump, NV
Posts: 374
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Re: Is lead still needed?
Been running this old girl for 30 years with whatever passes for regular gas.
Enjoy the ride, no to worry |
07-29-2020, 07:40 PM | #12 |
Senior Member
Join Date: Apr 2017
Location: Texas Gulf Coast
Posts: 727
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Re: Is lead still needed?
Auto your right on the fuel line, I had a brain fart.
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07-30-2020, 05:15 AM | #13 |
Senior Member
Join Date: Aug 2014
Location: North island Newzealand.
Posts: 272
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Re: Is lead still needed?
I add 2 stroke oil to every tank of fuel, if I have any money I use upper cylinder lubricant like Lucas or Moryes, it helps things like your carb spindles and might even help with your shitty ethanol
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07-30-2020, 07:47 AM | #14 |
Senior Member
Join Date: Jun 2016
Location: Pahrump, NV
Posts: 374
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Re: Is lead still needed?
You know guys, the subject of ethanol fuels has been beat to death on these forums. It's not that difficult to replace the offending hoses, carb parts and gaskets with "ethanol friendly" parts
The same with obsessing about the lubricating (necessity) of adding lead. There is enough lubricants in the chemical stew that passes for gasoline nowadays to make that unnecessary. |
07-30-2020, 09:53 PM | #15 | |
Senior Member
Join Date: May 2010
Location: Manawatu, New Zealand
Posts: 1,416
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Re: Is lead still needed?
Quote:
Have never used 2 Stoke oil -did read In Harold Sharon's Veteran car book that you shouldn't but can't remember the reasoning -although I do remember he said we shouldn't fight the addition of ethanol to gas - However he was talking about very early cars with very low compression and generally minimal (if any) rubber parts in contact with fuel Karl
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Such a fine sight to see-Its a Girl, My Lord, in a Flatbed Ford slowin' down to take a look at me. Last edited by Karl; 07-30-2020 at 09:59 PM. |
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07-30-2020, 09:59 PM | #16 | |
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Join Date: Nov 2012
Location: Wichita KS
Posts: 16,132
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Re: Is lead still needed?
Quote:
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07-30-2020, 10:45 PM | #17 | |
Senior Member
Join Date: Aug 2014
Location: North island Newzealand.
Posts: 272
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Re: Is lead still needed?
Quote:
Actuality lead was a lubricant and the fuel is less oily now days, adding some oil will make things last longer |
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