MGB & GT Forum
Block heater seal leak
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Apr 30, 2016 12:23 AM
Top Contributor
 Joined 12 years ago
19,528 Posts
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Here's a simple solution, the base of the valve and a 3/8" bolt, put an O ring under the head to make a seal 
Would look neater with the nut inside but space is limited in the head, or you could tap a thread in the base and fit a plug.
Would look neater with the nut inside but space is limited in the head, or you could tap a thread in the base and fit a plug.
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Img_7751.jpg 45.4 KB
Sorry Ernie it is the brass block heater insert thats leaking slightly not the heater valve.I should have posted this picture with my post.
North American MGB Register Member 25-8768
North American MGB Register Member 25-8768
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 Great White North, QC, Canada
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Apr 30, 2016 08:56 AM
Top Contributor
Joined 12 years ago
26,301 Posts
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You can renew the O-Ring on this to seal the leak. Remove this block heater and take it with its O-Ring to the parts counter. Easy Peasy. Of course if you want to remove it completely, buy a welch plug the same size as the block heater and install it.
This is what it looks like, you can see the groove for the ring;
FWIW I carry an old block heater in the boot in case of a welch plug letting go when I am away from home base.
B
Life's most persistent and urgent question is, "What are you doing for others?"
This is what it looks like, you can see the groove for the ring;
FWIW I carry an old block heater in the boot in case of a welch plug letting go when I am away from home base.
B
Life's most persistent and urgent question is, "What are you doing for others?"
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