MGB Welsh plugs

[Aussie Chris]

Hi All,
Popped a welsh plug this morning ordered new brass plugs 1 5/8 inches but will be some time before I get them, I have some steel ones so
I am going to use these. Having never changed a welsh plug on a B I was going to first clean up the engine hole then apply JB weld to the seat and then using two hammers one on the plug and tap with the other to flatten the plug out to give a tight fit your comments would be appreciated
Regards
Aussie Chris

 

[NutmegCT]

Good video on Welch plug replacement:

Note the use of the socket for installation.

 

[JPSmit]

I might use something less permanent than JB weld - especially of you are going to replace them with brass - maybe permatex?

 

[DrEntropy]

Permatex "Aviation Form-A-Gasket" and NEVER hit a hammer with another hammer!! Know a guy who lost an eye doing that. Use a "suitable" drift instead.

 

[Aussie Chris]

Hi Doc,
Can only get steel 1 .5/8 inch dome Welch plugs brass dome ones are scarce as hens teeth.
I am going to use Permatex A1 sealant to seal them in could I use this as a cover over the
entire plug to stop corrosion ?
Again thanks for your input
Regards
Chris

 

[DrEntropy]

Steel should be fine. If they're anything like what we've got over here, they're thick (.350") too. Just paint 'em after they're seated & sealed in place.

 

[Aussie Chris]

What about carrying a set of Dorman 570 006 expansion plugs in case you get caught out when away?

 

[DrEntropy]

Can't hurt, but it is highly unlikely the Doorman replacements will ever need to be renewed. And they will fit in the glovebox!

 

[DrEntropy]

That one is a "Pioneer Steel" plug, No "crown" and I prefer that. Found an ad for 'em on E-Bay here:

> EP14 Pioneer Steel Expansion Plug 1 5/8" Engine Freeze Plug READ DESCRIPTION | eBay <

 

[billspohn]

FYI, the inventor didn't like leeks and wasn't Welsh.

Those plugs were invented by the Welch Car Co.