The brass plugs that are fitted to the casting sand drain holes are called "Welsh plugs". They got the freeze plug name only in places where it got that cold, but they were not for that at all. They are used in many machines where leaving a hole is needed or unavoidable in manufacture.
I recall seeing a recent video somewhere that stated the floating oil pickups were to prevent the oil pump from sucking up the sludge accumulation that naturally occurred with the oils available at the time these engines were produced. It would build up in the bottom of the oil sump and the pickup would float above it as it built up. Now we buy oils that actively remove accumulations and keep them suspended until they are trapped in the oil filter. Older engines also often had no oil filters during this era.
I noticed that there is a hobart tug and ground power unit that has this same engine at north state aviation in winston salem NC. I had noticed this old ground power unit while servicing equipment a few months ago before you started filming this engine. I think this was a commonly used engine for old equipment from the 40s 50s or 60s.
I believe I remember the hobart machine having a bad water pump. I wouldn't be surprised at all to find that the pump is chewing on pieces of that rusted up coolant tube.
My Dad had one of those mile long 5/8" combination wrench, when I was a kid, but it had gone missing by the time I wanted it in my box; had no idea it was specific to the Mopar early flathead 6...at the time, it was just something that my Dad had in his box, and it never occurred to me to ask about it.
So many details unique to both engines of the era and Chrysler in particular, the Engineers didn’t do things without a reason, and now we sometimes find ourselves second guessing what that reason might have been. Beautiful to watch it being reborn, to do it’s job for many years to come.
Rebuilt one for my 56 dodge truck. It took me 3 hours to get the old coolant tube out. But it had to be done. Mine didn't look as bad as that one but it was bad.
I have one of these motors , that doesnt run but turns over. This video was very informative. I think if you ran coolant, maybe the tube would not rot out and you wouldnt have to replace it every two years. I had those same plugs in my Austin. Any idea what that cost to rebuild that motor? My regular machine shop just threw me a I dont want to do it price of 5k. Is that reality? No wonder so many cars just end up with a sbc
You have to dig out the coolant tube and replace it because it is critical for the coolant to get to the far end of the engine. Tubes are still available now, and you can get them in galvanized steel, so they should last quite a lot of years.
Oh, boy. Hoped to get more details on these old engines. I had two of them in Plymouths, a '47, IIRC, and a '50. One, I was just out of h.s. and the other a couple years later. Both had main bearing "rumble", the first one took to a shop and they Plastigaged the clearance and it was going to need to have the crank turned and new bearings so I returned it to the seller and they refunded my money. The '50 model was to get me by until my finances improved. I'd bought it dirt cheap and it was very reliable 'cept for leaking oil out the rear main and also had a bit of the 'rumble'. Some time in the 'late '80s, my wife and i responded to an ad selling a '50 DeSoto and we went for a look and test drive. It too had main bearing rumble and was very rusty underneath. I've always wondered since if the crankshaft bearings were a weakness in those old engines, based on my experience.
So Ed tapped the hole he made to the proper size thread for that plug? And those domed brass plugs I guess if you wanted to you could put a block heater in one of those holes if a guy wanted to? Some engines like my Ford 8N tractor don’t have enough space to replace a freeze plug with a block heater they didn’t leave enough room so some flathead engines came with a head bolt that was actually a block heater . They don’t make them anymore but I have a few, I think they were called a pencil heater 😀🇨🇦
@BarryTsGarage. Heads up! I think this gentleman is looking for the intake and exhaust valve clearances for the Chrysler Flathead Industrial Engine. Thanks and take care.
My Dad always called the convex ones Welch plugs, I call all types core or block plugs. Recently asked the parts guy at the Chevrolet dealership for some, used every name I could think of and he had no clue what I was talking about ! Somehow modern engines don't have any.
That hole in the head on the number 6 can be used with a check valve to have compressed air, I did that with my 49 dodge truck, so long as you don't mind a bit of fuel vapors in the air
Chrysler engines were painted with silver or aluminum paint with black accessories for many years, 1920s to early fifties. Some twenties high compression models were called "Red Head" and had the cylinder head painted red. The standard model was "Silver Dome"
Explanation for the freeze plugs is actually wrong is the sand castings were put together in molds the holes were the sand castings join to other sand castles, unfortunately they use water back then didn't have antifreeze you're supposed to drain the water on the block at night, showing the water would freeze the plugs will pop out not saving the block because the water was frozen and is not going to drain out when it's frozen, as the water keeps freezing and expanding it cracks the block. This is why they were called freeze plugs not casting plugs.
Called "core plugs". The voids in the finished casting for water jackets, etc are made by temporarily "gluing" special sand together to make sand cores, which take up space in the molds. When the molten metal is poured into the molds, the sand cores allow the metal to flow around them. When they take apart the mold the raw casting is freed, but the sand cores have to be removed thru the sand core holes by SERIOUSLY vibrating the casting to break apart the sand cores and pouring out the "deconstructed" sand.
The brass plugs that are fitted to the casting sand drain holes are called "Welsh plugs". They got the freeze plug name only in places where it got that cold, but they were not for that at all. They are used in many machines where leaving a hole is needed or unavoidable in manufacture.
Thanks for adding this detail!
I recall seeing a recent video somewhere that stated the floating oil pickups were to prevent the oil pump from sucking up the sludge accumulation that naturally occurred with the oils available at the time these engines were produced. It would build up in the bottom of the oil sump and the pickup would float above it as it built up.
Now we buy oils that actively remove accumulations and keep them suspended until they are trapped in the oil filter. Older engines also often had no oil filters during this era.
I believe everything you say here is correct
was just going to say the same but you got here first.
@@gordonborsboom7460 the floating oil pickup was used to prevent oil starvation on steep inclines
@@gordonborsboom7460 Mopar flathead had bypass oil filters, later ones were full flow
Love this guy! Our Chrysler 251 had a brass coolant tube... the only part on the whole engine that wasn't locked up tight.
That brass upgrade was a good idea
I noticed that there is a hobart tug and ground power unit that has this same engine at north state aviation in winston salem NC. I had noticed this old ground power unit while servicing equipment a few months ago before you started filming this engine. I think this was a commonly used engine for old equipment from the 40s 50s or 60s.
Have them check the coolant tube! 👍
These old Chrysler flatheads were used in a lot of applications.
Yes seems like it
Lots of street sweepers and fork lifts and wood chippers used these motors.
I believe I remember the hobart machine having a bad water pump. I wouldn't be surprised at all to find that the pump is chewing on pieces of that rusted up coolant tube.
Golden. Keep the wisdom flowing this way thank you
I appreciate the feedback! Thank you
My Dad had one of those mile long 5/8" combination wrench, when I was a kid, but it had gone missing by the time I wanted it in my box; had no idea it was specific to the Mopar early flathead 6...at the time, it was just something that my Dad had in his box, and it never occurred to me to ask about it.
So many details unique to both engines of the era and Chrysler in particular, the Engineers didn’t do things without a reason, and now we sometimes find ourselves second guessing what that reason might have been. Beautiful to watch it being reborn, to do it’s job for many years to come.
Thank you - I agree
The floating oil pickup would have been crucial in marine applications which was a very popular application. Really important in rough water
Great point!
I've never seen soft plugs like that or put in like that, thanks for showing it,
Rebuilt one for my 56 dodge truck. It took me 3 hours to get the old coolant tube out. But it had to be done. Mine didn't look as bad as that one but it was bad.
Good job getting it out! And also thanks for your comment, great to have you on the channel
Only problem I ever had was overheating because of the water feed tube rusting out.
Changed oil every 1000 miles, never over revered it.
That’s the weak spot! 👍
@@BarryTsGarage don’t know for sure but I was told, some cab companies replaced them with copper units.
Makes sense. Ed also mentions brass.
Old guys rule!!!❤️💯👍👍
Good video Barry love seeing and learning from Ed,, Now bring on Alan! lol
Will do - he’s out touring at the moment, but we’ll get him back!
The f.oating pickup was to only get the "cream" of the oil! Tha bad stuff went to the bottom, and it floated on top.
They must have been very reliable engines, because I've seen them in alot of different, old industrial equipment.
I have one of these motors , that doesnt run but turns over. This video was very informative. I think if you ran coolant, maybe the tube would not rot out and you wouldnt have to replace it every two years. I had those same plugs in my Austin. Any idea what that cost to rebuild that motor? My regular machine shop just threw me a I dont want to do it price of 5k. Is that reality? No wonder so many cars just end up with a sbc
You have to dig out the coolant tube and replace it because it is critical for the coolant to get to the far end of the engine. Tubes are still available now, and you can get them in galvanized steel, so they should last quite a lot of years.
Any idea on the budget for this build?
Love videos by the way
I don't know - I'll ask Ed, see if he remembers...
Had the Chrysler Crown marinized version in a boat with updraft carb. It was great, good on fuel steady raw power at low rpm
👍👍
How can I contact this guy?. I have a 292 chevy I would like to get built and this is the guy!
Try contacting five star engines in Phoenix, Arizona
Oh, boy. Hoped to get more details on these old engines. I had two of them in Plymouths, a '47, IIRC, and a '50. One, I was just out of h.s. and the other a couple years later. Both had main bearing "rumble", the first one took to a shop and they Plastigaged the clearance and it was going to need to have the crank turned and new bearings so I returned it to the seller and they refunded my money. The '50 model was to get me by until my finances improved. I'd bought it dirt cheap and it was very reliable 'cept for leaking oil out the rear main and also had a bit of the 'rumble'.
Some time in the 'late '80s, my wife and i responded to an ad selling a '50 DeSoto and we went for a look and test drive. It too had main bearing rumble and was very rusty underneath.
I've always wondered since if the crankshaft bearings were a weakness in those old engines, based on my experience.
I'll ask Ed! Thanks
So Ed tapped the hole he made to the proper size thread for that plug?
And those domed brass plugs I guess if you wanted to you could put a block heater in one of those holes if a guy wanted to? Some engines like my Ford 8N tractor don’t have enough space to replace a freeze plug with a block heater they didn’t leave enough room so some flathead engines came with a head bolt that was actually a block heater .
They don’t make them anymore but I have a few, I think they were called a pencil heater 😀🇨🇦
Interesting - I need to look that up!
We had a '53 Plymouth that had a head bolt heater. Pretty common up north.
Hey Mr. Ed I've got a Snap-On version of that flywheel wrench.
Fantastic
Hola maestros las válvulas a q medida van calibrada admisión y escape. Gracias
@BarryTsGarage. Heads up! I think this gentleman is looking for the intake and exhaust valve clearances for the Chrysler Flathead Industrial Engine. Thanks and take care.
They are called "Welch plugs".
They are called numerous things depending on the country
My Dad always called the convex ones Welch plugs, I call all types core or block plugs. Recently asked the parts guy at the Chevrolet dealership for some, used every name I could think of and he had no clue what I was talking about ! Somehow modern engines don't have any.
That hole in the head on the number 6 can be used with a check valve to have compressed air, I did that with my 49 dodge truck, so long as you don't mind a bit of fuel vapors in the air
Great idea!!
@@BarryTsGarage I liked your vid, learned abit. I used to take the plug wire off, don't know if it is necessary though
Thank you!
When does ED recommend a high volume oil pump
I’ll ask Ed!
The pick up for the oil is exactly like my Studebaker 259 V-8 .
Interesting
Did they actually charge for 'painting' the block?
I have no idea. I’ll ask Ed?
Chrysler engines were painted with silver or aluminum paint with black accessories for many years, 1920s to early fifties. Some twenties high compression models were called "Red Head" and had the cylinder head painted red. The standard model was "Silver Dome"
cool stuff
That style of freeze plug is actually a welch plug
Thank you for adding that detail for us!
Sand was a problem in the flat head ford V8 also.
Explanation for the freeze plugs is actually wrong is the sand castings were put together in molds the holes were the sand castings join to other sand castles, unfortunately they use water back then didn't have antifreeze you're supposed to drain the water on the block at night, showing the water would freeze the plugs will pop out not saving the block because the water was frozen and is not going to drain out when it's frozen, as the water keeps freezing and expanding it cracks the block. This is why they were called freeze plugs not casting plugs.
Called "core plugs". The voids in the finished casting for water jackets, etc are made by temporarily "gluing" special sand together to make sand cores, which take up space in the molds. When the molten metal is poured into the molds, the sand cores allow the metal to flow around them. When they take apart the mold the raw casting is freed, but the sand cores have to be removed thru the sand core holes by SERIOUSLY vibrating the casting to break apart the sand cores and pouring out the "deconstructed" sand.
They built them into to 60’s
This man has actually forgotten so much about his profession that a lot of his knowledge will be lost forever like the great pyramid
Chevy engines are famous for having the oil pickup fall off! anything is better than the way a chevy engine is.
Did you install it?....
Did you install it?...
@@kenneth9874 No It was probably you.
@@mylanmiller9656 neither I or anyone that I know ever had such a problem so I guess that leaves your dubious abilities to be the obvious culprit....
@@kenneth9874 When did you start building engines, Yesterday
Crappy design... 🙄
The slant six was a massive upgrade! 👍