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Have I found the culprit - overheating!


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Posted

A couple pictures of a 1950 and earlier external by pass block with no by pass hole in the block and a picture of the later internal by pass block with by pass hole and the proper factory by pass head installed.

Bob

  • 2 weeks later...
Posted

Removed the welsh plugs today - had to remove some stuff from the left side of the engine which took me some time...

There was not so much dirt behind the plugs - the lower back one was worst.

The block is flushed now and I can recommend to use a vacuum cleaner [one that can deal with water] and a thin hose to suck out water and dirt !!

Although I did not find that much dirt I think it was worth the extra effort - now I know for sure the block is clean!!

I'll get back with feedback when new plugs are fitted and all stuff is back etc!

thanks!

//Daniel

Posted

Yes - removed the petcock too!

I'm feeling a bit stressed to get all my plans done - first spring day here in Sweden :D

Well, I guess getting the engine in operation is first prio!!

//d

Posted
you say you have flushed the engine. when you did this did you remove the welch plugs (freeze plugs) on the left side of the engine. Piles of stuff can accumulate in there. A good flushing includes removal of all five:)

Anyone ever use the adjustable freeze plugs? They have a bolt to tighten 'em up. I have used them on other engines. Any comments?

Posted

I have used two different kinds of plugs with bolts thru them. The metal kind, I think it was brass or copper, had to be of the same size as the original as the bolt only squeezed two plates together to make it expand and seal.

The other was rubber with a bolt thru it, a large washer on either side and a nut on the back, (no comments, please), Tightening the bolt squashed the rubber together to make it get fat and seal. It worked for about a week and then ejected itself and dumped all the coolant in the street.

I won't try that again, its only for emergencies to get you home as far as I am concerned.

Posted
Anyone ever use the adjustable freeze plugs? They have a bolt to tighten 'em up. I have used them on other engines. Any comments?

When I first got my 50 Plymouth it had one in the engine, it did not leak and seemed like it worked fine.

Posted
Anyone ever use the adjustable freeze plugs? They have a bolt to tighten 'em up. I have used them on other engines. Any comments?

I have used the higher quality copper expandable soft plugs in the flatheads. Never the rubber ones.

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