Dreaded block coolant drain plug removal/replacement

[tekenaar]

According to my search here, there are numerous threads discussing the dreaded "in-block" coolant drain plug removal and subsequent replacement.

The plug is M14 x 1.5, metric pipe threaded and has a 3/8" square male head for removal . . . go figure!

Here's my recommendations for proper removal and suggested replacement of this plug:

First, go to Sears buy a Craftsman "3/8" 8-pt standard", 3/8" drive socket, PN 45792.

Second, go to any Auto Parts store and purchase a 1/4" MIP (NPT) brass drain cock from their "HELP!" parts.

Clean any gunk from around drain plug and warm up engine, then liberally spray PB Blaster around drain plug and let set until cool. When cool, use a "breaker bar", short extension and your new Sears socket to loosen that stubborn drain plug.

Put drain plug aside as a "back-up", you'll replace it after the block drains with your brass coolant drain petcock, which has the benefit of now draining your block with a mere "twist of the wrist!"

[oldopelguy]

Curse me not being a mod, when the perfect opportunity presents itself!

[tekenaar]

Curse me not being a mod, when the perfect opportunity presents itself!

You got me . . . spelling, that is . . . but I was also wrong about plug size, uh, thinking about the OP sender hole!

[Aardvaark]

Second, go to any Auto Parts store and purchase a 1/4" MIP (NPT) brass drain petcock from their "HELP!" parts.

Put drain plug aside as a "back-up", you'll replace it after the block drains with your brass coolant drain petcock, which has the benefit of now draining your block with a mere "twist of the wrist!"
-----------------------
Otto. Please refrain from using dirty words in your posts! This is suppose to be a family friendly site!

On a serious note. You are showing a "drain cock" not a "drain petcock". Two
different animals you know.

[RallyBob]

The plug is 1/4" MIP (NPT) threaded and has a 3/8" square male head for removal . . .

In truth Otto, it's a metric plug, 14 mm pipe thread. BUT, it is SOOO close to 1/4" NPT they are virtually interchangeable. I've done it myself for many years.

Bob

[tomking]

So at least we now know that all of Ottos pets are males.

[tekenaar]

In truth Otto, it's a metric plug, 14 mm pipe thread. BUT, it is SOOO close to 1/4" NPT they are virtually interchangeable. I've done it myself for many years.

Bob

Oddly, that's - M14 x 1.5, actually - what I'd said originally, but then I second-guessed myself because I'd given the "drain cock" replacement size as being 3/8" MIP, which I realized was wrong . . . comedy of errors, it turns out!

[RallyBob]

but then I second-guessed myself because I'd given the "drain cock" replacement size as being 3/8" MIP,

Heh heh, you said 'drain'....

[hrcollinsjr]

Behave y'all! You're acting like a flock of cockerels.

Harold