• When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

Block Coolant Drain Plug Removal

Moparfiend

FBBO Gold Member
FBBO Gold Member
Local time
2:44 PM
Joined
Oct 27, 2017
Messages
3,619
Reaction score
4,098
Location
HOT
Any tips/tricks on how to remove my block drain plugs prior to removing the motor? I don’t want to break them off.

I suppose I can leave them in there and have the shop remove them at their leisure?

Thanks,
Ron

image.jpg
 
It won't break, but could strip the head. Use the tightest fitting 6pt socket and a breaker bar.
 
I would be very surprised if you could twist one off! They should come out-with superhuman strength or even wimpy strength.
Mike
 
Any tips/tricks on how to remove my block drain plugs prior to removing the motor? I don’t want to break them off.

I suppose I can leave them in there and have the shop remove them at their leisure?

Thanks,
Ron

View attachment 1977093
Let them pull them. They may heat the area around them with a torch first.
 
heat, and tighten to loosen. English car owners know, tighten the fastener before loosening. If it tightens a little bit, SCORE! Even if no movement is felt, it still helps
 
Many folks put these in Tighter than lug nuts. They are pipe threads, they don't need to be so tight.

Six point socket, 1/2" drive and a breaker bar. Yes tighten first, then loosen.
 
Tapping the head with a small hammer can loosen the threads and make break loose easier.
Thanks Mike! Any idea how much water is left when everything else is drained like lower radiator and water pump with the drain plugs still in? I guess I’m asking how much does a water jacket hold roughly?
 
A friend of mine that's a machinist taught me. Heat the plug itself then quench it with water. Smack the tool in the hole and it will come right out.
Doug
 
A friend of mine that's a machinist taught me. Heat the plug itself then quench it with water. Smack the tool in the hole and it will come right out.
Doug
That’s exactly how I remove them, hasn’t failed yet.
 
Yes, there is more water in there. Above techniques work, and when you reassemble it, with some kind of sealer, they do not need to be over tightened. I usually install brass radiator drains instead of plugs.
 
Leave the plugs in and let the shop worry about them. Just knock a freeze plug sideways on both sides to drain the coolant and you will be fine.
 
Back
Top