Hmm, some sanding, some welding, finally protecting the weld with paint, but the block is ready for machining, that is, changing the cylinder linings, custom sanding and leveling the top surface.
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Crack? I donāt see any crack. I must have imagined it earlier.
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Tone,
To late, but hereās another trick involving charcoal and cowpatties 
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Hey Jo, these masters are much better than me, Iām an ordinary apprentice compared to them. 
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Thanks for the video JO .
The only way I could contribute to that is with a supply of cowpatties .
Masters at what they do !!
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Well, I watched the whole thing but still donāt know what I was watching. That must have been a vary rare block to go through all of that. I would like to see them get new bearings in those crank journals without line boring them. It does kind of remind me of stuff Iāve seen out of Cuba where they have kept Fifties American cars running by building replacement parts in their home garages. That totally impressed me.
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Just amazing to see how some people still have to do things in a primative way. Iāve read where during WWII some countries had no petrolium, so they made vehicles run on wood. An old lost art, I guess. Seriously, does anyone have any idea what gas he was using? When I was a kid, every garage had an acetylene generator and an ozygen bottle for welding. I didnāt see any oxygen in the picture. And when grinding, it didnāt look like that was brazing rod. Wonder what it was. Finally, I thought when they got done doing the welding or what ever, you had to place the entire casting into something that would hold heat ( sand? ) to cool down slow. TomC
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Tom, l think he melted the actual cast iron, hence the intense preheatng of the part. The cow pattys were probably there for slowly lowering the temp by burning progresively colder.
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Definitely, they use acetylen. You may see man putting few pieces of carbide into generator at the beginning of the video. I suppose they use only compressed air instead of oxygen because of flame color.
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All I know is these guys will be miles ahead of me when the shtf. Iām not even able to contribute with a cowpattie 
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No worries JO. Pick the most common engine in use in your area. You can keep one running almost indefinitely by scavenging parts. My thinking is buy at least one set of head gaskets. I donāt know any work around for that. You probably could make all the other gaskets but I have a complete rebuilder set for Small Block Chevyās.
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You can make them out of sheet copper. Reusable, if you reaneal/stress relieve them. Actually LP gas is hot enough. Some racers do it. Just more expensive.
Rindert
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That was very interesting Rindert. I have heard of reusable copper gaskets before but never thought it was worth the risk and I never heard of using silicone between head gaskets. Must be something you pick up from working on diesels, which I never have. I see the gaskets were formed for O rings and the block was O ringed but in the video I never saw him install them. Or course he probably skipped a few steps to keep the view time down. I figure that for under 50 bucks for a long block gasket set itās easier to just stock a few sets. I will be looking into the copper though.
https://www.summitracing.com/parts/fel-260-1000?seid=srese1&gclid=EAIaIQobChMIp-nN06ii9QIVUnxvBB3gCghaEAQYASABEgIB1vD_BwE
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Do any of you recognize this guy?
Is he on this forum?
Looks like heās running MFn on only gengas?
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Patrick Johnson. Same guy Mike put up minutes ago on āpyrolisis threadā. Used to live in South Africa. Moved to Australia, but I think we lost contact since. Still DOW member though.
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Iām not very familiar to diesels, so anyone correct me if Iām wrong.
As I understand it Patrick did it the other way around with the tractor - idling on woodgas and throtteling with diesel.
Running with a small amount of diesel and throtteling with woodgas and since diesels normally have a wide open air supply - how is it possible to get a good enough mix? I mean, we have trouble igniting a lean mix even with a spark. Is it compression/heat alone, or am I missing something?
Edit: Well, the small amount of diesel ignites, but what about the woodgas mix? Does a lean mix burn fine if itās just hot enough?
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Hmm , this guy has a fuel lock on the stop lever and it shows when he puts it in the run position and raises the revs with the power lever. I am surprised that it idles nicely without fuel diesels. This engine is equipped with a Lucas diesel pump , if you are familiar with the operation , here the fuel is added via a metering valve in the high pressure section , which even in the stop position does not completely shut off the fuel , so it still injects a minimum amount,ā¦ my opinion
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When ignited with diesel fuel, all combustible gases in the cylinder burn, as the combustion of diesel fuel further increases the pressure and temperature in the chamber, which is already so high due to high compression. When adding gas to diesel fuel, it is not important to keep the fuel ratio (1: 1) at all times, you just have to make sure that there is not too much gas, ā¦ smoke on the exhaust.
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Tone, would it be possible to use the air-mix valve as an accellerator? WOT = idle. Restricting it to pull on the gasifier = reving up. Maybe thatās how itās normally done?
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That makes sense to me. Iāve never fiddled with diesel and producer gas but thatās how a diesel works when you think about it. Idle is the meanest condition and full tilt is the most amount of fuel it sees.
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