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Replacing core plugs

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Has anyone done this?

Any tips? They don't seem to want to move.

Not much info in the 'search' files.

Thanks,

Tom.


'A pound of rubber is worth a Ton of engineering.'- Jim Endruweit quoting Colin Chapman.

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I bought new ones to do but looking at the hassle removing the old ones and sealing them I decided to the the old ones alone.

 

Buddsy


 

"Belief is the enemy of knowing" - Crrow777

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Core plugs...?? I assume you mean the big brass thingies that screw in to the side of the block, and have a hole for a hex Allen key in them. My feeling was that if they aren't leaking, they aren't likely to and are.. as Buddsy has said...best left alone. Nothing to be gained by removing them....unlike the usual dished steel things they won't rust through!


Scientists investigate that which already is; Engineers create that which has never been." - Albert Einstein

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John I assumed he meant the dished steel plugs to blank off the cooling holes from manufacture of the block. I know they can rust through...

 

Buddsy


 

"Belief is the enemy of knowing" - Crrow777

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Yes, I was referring to the steel core plugs or freeze plugs as their sometimes called.

Most I have come across just spin around after a good tap and can be removed. But these seem to be really firmly lodged in. Perhaps it's yet another 'leave well alone' moment.

 

Tom. 


'A pound of rubber is worth a Ton of engineering.'- Jim Endruweit quoting Colin Chapman.

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I replaced some on an A series engine so thought I would do mine in the Lotus engine when I rebuilt it. I found the same thing that they didnt really want to come out so I left them alone. 

 

Buddsy


 

"Belief is the enemy of knowing" - Crrow777

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It has core plugs? Of the steel variety? Blimey. Either I've never found them or I'm still woozy from the anaesthetic when they put my shoulder back together on Tuesday! Where are they, then?

 

Aha! The only core plugs I remember are in the cylinder head on the exhaust side...when I first took mine apart in 1989(?) the alloy had rotted away and the head needed extensive alloy welding and remachining. Seemed little point in fabricating a place to put core plugs....so all trace of them was eliminated, and the engine hasn't had core plugs since then!! Great!!...I'm not going daft.....


Scientists investigate that which already is; Engineers create that which has never been." - Albert Einstein

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Im not going back out to check but I think I noticed one on the back end of the cylinder head. 

 

Just checked the 88 parts  pdf and yes one on the back of the head.

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One medium one each end of the head, several small ones inlet and top of head, large one in the block behind the water pump....I think.

I'm leaving well alone!!


'A pound of rubber is worth a Ton of engineering.'- Jim Endruweit quoting Colin Chapman.

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If it ain't broke......as the saying goes!!


Scientists investigate that which already is; Engineers create that which has never been." - Albert Einstein

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