Bad Frost plug hole

[doofus]

Like i said, interesting to hear other peoples trials and tribulations in the core plug arena. Doofus

[cwsimpson]

I have used the brass Dorman expansion plugs successfully when part of the lip is missing. As long as there is enough of a lip to hold the plug square during tightening, it should be OK.

[ATTACH=CONFIG]56762[/ATTACH]

Otherwise, I would grind out the remainder of the lip and go to a cup type of plug. I would advise against using the rubber expansion plugs, especially without first grinding the rest of the lip away.

Hey Rerun-
AS I as rereading through some of these posts, this struck me as a good idea. Looks like (according to measurements) this should fit fairly tight. And as it turns out, Studebaker has it in their catalog.
(No, they don't sell new holes, but this might work just as well!)
Thanks for the post.
cws

[StudeRich]

Was this changed in orientation of any of the engines? My 59 259 V8 block and my 63 259 V8 block all have the dome to the inside. As I see it in the manual (unless my pictures are truly distorted) the dome goes to the inside./Cut/

So the question remains in my mind at least: has your '59 had an Engine swap to a Full-Flow late '62-'64 Block?
Because it seems this whole ongoing forever misunderstanding is ALL about that!

Either you or someone installed Cup type Core plugs where Flattened Domed Discs were required, or it is NOT a '59 Block!
I'll be able to sleep better knowing the answer to this Mystery that caused all this Disc or Cup misunderstanding!

[rstrasser]

As I mentioned before, at one time my 55 had core plugs that were held in by a toggle and sealed with a gasket. I found one in my box of tricks that I carry in the trunk and if it works I have enclosed a few pictures. There is no name on the plug so I have no idea who made them. Easy to install.
Ron

[StudeRich]

That looks like a foolproof on the Road emergency Fix, anything that "can be" loosened, removed, leak or fall out easily, is not something I would want permanently, but Great in a pinch.

[mbstude]

Rich, the plug that rstrasser posted photos of is a genuine factory service part. I used a full set (bought from Sasco before Ed bought the inventory) in my '58 Commander a few years back. Stude part number is 1562875.

[doofus]

That factory illustration makes it look soooo easy, HAH. Doofus

[r1lark]

And here is the factory service part for the disc-type core plugs:

[cwsimpson]

Rich, the plug that rstrasser posted photos of is a genuine factory service part. I used a full set (bought from Sasco before Ed bought the inventory) in my '58 Commander a few years back. Stude part number is 1562875.

So these are actually attached. Seems to be a great route to go, if these can still be found.
Thanks for the post. I've learned way more on this thread than I EVER expected to. All the information is very appreciated.
cws

[JoeHall]

To make this thread more searchable in the archives, I will say the words: freeze plug, freeze out plug, block plug, expansion plug, temporary plug, and water jacket plug. If anyone else can think of other commonly used terms for this component, it would be nice to use them once here also. In this part of the country, nobody would have a clue of what a frost plug is anyway.

BTW, for the OP, I'd just go with the much easier to install, and better sealing rubber expansion plug. But be sure to check it in 10 years or so to make sure it is still doing OK. Or next time the motor is out for rebuild, whichever comes first

[rstrasser]

If anyone has any of the 1562875 to sell drop me a PM stating quantity and price. I see no reason that they will not work in the latter blocks that used the disk type plugs. Easy to install and no worry of them blowing out.
Ron

[r1lark]

If anyone has any of the 1562875 to sell drop me a PM stating quantity and price. I see no reason that they will not work in the latter blocks that used the disk type plugs. Easy to install and no worry of them blowing out.
Ron

Since Studebaker went to the trouble to issue two different style service parts for the bolt-in core plugs (one style for the disc-type, and one style for the cup-type), it will be interesting to see if the 1562875 style works in both early and late blocks. I kinda think there is a reason it won't work. Let us know how this works out if you do try it.

[cwsimpson]

freeze plug, freeze out plug, block plug, expansion plug, temporary plug, and water jacket plug.

To make this thread more searchable in the archives, I will say the words: freeze plug, freeze out plug, block plug, expansion plug, temporary plug, and water jacket plug. If anyone else can think of other commonly used terms for this component, it would be nice to use them once here also. In this part of the country, nobody would have a clue of what a frost plug is anyway.

BTW, for the OP, I'd just go with the much easier to install, and better sealing rubber expansion plug. But be sure to check it in 10 years or so to make sure it is still doing OK. Or next time the motor is out for rebuild, whichever comes first

Hi Joe-
Thanks for the pointers. Hope the northern lingo doesn't offend anyone. Not sure how to add the search terms freeze plug, freeze out plug, block plug, expansion plug, temporary plug, and water jacket plug. I'll at least use them here. I hope this is accessible to others who have the same issues and questions.
cws

[rstrasser]

Paul;
In my Avanti parts book for 1964 (not listed in the 1963 Avanti parts book) they show a listing (no picture) for a P/N 1562876 service core plug. My parts books only go back to 1959 and there is no other listing for a service core plug. I do know that the 1562875 type core plugs were in my 55 when I purchased it in 1960. Can anyone else look up P/N 1562875 and locate when it came into existence. for cars
Ron

[r1lark]

Ron, the '59 thru '64 Parts Manual (non-Avanti) lists these core plugs. Being a 156xxxx series, they must have been added in late '63/early '64, and the 1562875 was approved for use on earlier V8s (back to 1959 at least). The Service Letters may provide more information.

1562875 PLUG, water jacket (adjustable ) 1-1/2" service only Note 19, listed for 59V - 62V

1562876 PLUG, water jacket (adjustable ) 1-1/2" service only Note 20, listed for 62V - 64V; also has the square symbol that denotes "used with full flow oil filter"

Notes 19 & 20 correspond with the change from partial flow to full flow blocks.