What is this please.
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What is this please.
While in the engine noticed this small round hole behind the dipstick.It had a small round piece of metal in it originally that fell out.It seemed to be in the hole as a cover.I don't think there is leakage from there but wondering what it is.It is on a marina 1275 engine.
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Re: What is this please.
The item in question is a core/welch plug.
It is not standard and it has been modified with possibly an additional plug to cure a coolant leak.
I would change the core/welch plug soonest.
Take care when fitting a new core/welch plug as there is no back stop to the core plug so in theory the plug could be knocked right through into the water jacket and then it is near impossible to get the plug out.
As your engine block has the ribbing it is a Ital 'A' Plus 1275cc engine which is stronger than the Marina block
It is not standard and it has been modified with possibly an additional plug to cure a coolant leak.
I would change the core/welch plug soonest.
Take care when fitting a new core/welch plug as there is no back stop to the core plug so in theory the plug could be knocked right through into the water jacket and then it is near impossible to get the plug out.
As your engine block has the ribbing it is a Ital 'A' Plus 1275cc engine which is stronger than the Marina block
Last edited by philthehill on Mon Sep 25, 2023 11:57 am, edited 1 time in total.
- svenedin
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Re: What is this please.
Looks like there is a leak there. I can see fluid in your picture
Stephen
Stephen
1969 1098cc Convertible “Xavier” which I have owned since 1989.
Stephen
Stephen
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Re: What is this please.
Thank you are they changeable from outside the engine if so how please.Arexthey screwed in etc.
Re: What is this please.
Usually a hole punched into the the plug, with a sharp spike, allows one to ‘hook’ the plug out. The plug is an interference fit, so it’s tapped in carefully flush with the block face, use a core plug sealant.
As mentioned don’t let the old or new one fall into the block. In your case you may be able to enter a engineers tap, of appropriate size, into that hole and perhaps pull the core plug out, although it might be too tight.
As mentioned don’t let the old or new one fall into the block. In your case you may be able to enter a engineers tap, of appropriate size, into that hole and perhaps pull the core plug out, although it might be too tight.
Last edited by les on Mon Sep 25, 2023 1:06 pm, edited 1 time in total.
- geoberni
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Re: What is this please.
Yes.Classiccars wrote: ↑Mon Sep 25, 2023 12:03 pm Thank you are they changeable from outside the engine if so how please.
Arexthey screwed in etc.
No, there are removed and fitted with brute force. See this youtube video for fitting: https://youtu.be/4aejqRkgGaE
Removing is punching a screwdriver or similar through the middle and levering it out.
I've never seen one with an extra bit in the middle.....
You can buy them from ESM: https://www.morrisminorspares.com/search/core-plug
I'm assuming the Plugs are the same size on the A Plus Engine, but I'm sure Phil can confirm that
Basil the 1955 series II
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Re: What is this please.
Those ESM core/welch plugs are the wrong ones. They are for the small block 'A' Series plus some Cooper 'S''s.
These are the ones you need:-
http://www.minispares.com/product/Class ... o%20search
As I said above you do need to be careful when hammering the core/welch plug fitted to 'A' Plus engines. With this type of plug it is better to drill a 3/8" hole and then lever out the plug.
Use a vacuum cleaner nozzle when drilling to catch any swarf/crud.
Good luck.
These are the ones you need:-
http://www.minispares.com/product/Class ... o%20search
As I said above you do need to be careful when hammering the core/welch plug fitted to 'A' Plus engines. With this type of plug it is better to drill a 3/8" hole and then lever out the plug.
Use a vacuum cleaner nozzle when drilling to catch any swarf/crud.
Good luck.
- geoberni
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Re: What is this please.
Thanks for the A Plus correction Phil.philthehill wrote: ↑Mon Sep 25, 2023 3:22 pm Those ESM core/welch plugs are the wrong ones. They are for the small block 'A' Series plus some Cooper 'S''s.
These are the ones you need:-
http://www.minispares.com/product/Class ... o%20search
As I said above you do need to be careful when hammering the core/welch plug fitted to 'A' Plus engines. With this type of plug it is better to drill a 3/8" hole and then lever out the plug.
Use a vacuum cleaner nozzle when drilling to catch any swarf/crud.
Good luck.
I didn't realise the A Plus used the Cup Style. Now I've looked closely at the photo, I can see that's what they are....
Basil the 1955 series II
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Re: What is this please.
Great info as usual gents thank you.
- Bill_qaz
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Re: What is this please.
Could someone have fitted one the universal expanding type plugs and the centre has come off?
Regards Bill
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Re: What is this please.
I will havecalook thanks.
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Re: What is this please.
Phil sent a picture thanks
- Bill_qaz
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Re: What is this please.
So what was the centre boss with hole as that's not a standard core plug as Phils link.
Regards Bill
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Re: What is this please.
Could the insert in the core plug be for an aftermarket water temperature sensor?
Just a thought
Paul
Just a thought
Paul