In line coolant temp sensor location q- EFI conversion

[YellowThumper]

Good simple work around.
I had to drill and tap into mine. Sb360.
Was not warm and fuzzy til the end was a success. Lots of grease on tap to contain chips.

Mike

[Mopsquad]

My luck, the pipe plug won't budge and the 3/8 drive that used to engage is starting to round out the plug center square.  Just bought a 1/2" drive from Harbor Freight and will grind it down for a tighter fit before I retry.

[1 Wild R/T]

Hate to say it but heat is your friend... Even if it's not the friend of paint...

[Mopsquad]

Hate to say it but heat is your friend... Even if it's not the friend of paint...

If this new extension doesn't budge, heat is in the plan.

[Katfish]

Good luck, probably corroded, that's why I had to go to radiator.
Couldn't get the steel plug out of the aluminum manifold......

[YellowThumper]

I unfortunately agree with the heat...

Good luck with the tighter drive.

[gzig5]

A good way to control the heat application to the plug and not the surrounding area would be to heat a close fitting 3/8" hunk of metal as high as you are comfortable and drop into the plug and let it sit.  It doesn't need to be glowing, just starting to turn color should be enough.  Give it a few minutes to transfer the heat to the plug and then remove and give it a try to loosen it.  You also want to give the drive tool a couple good wacks with a hammer to help break the threads loose either before or right after heating.  Just hit the tool, not the ratchet...
This process can also be used on smaller screws by using a 40W soldering iron as the heat source.

[Mopsquad]

A good way to control the heat application to the plug and not the surrounding area would be to heat a close fitting 3/8" hunk of metal as high as you are comfortable and drop into the plug and let it sit.  It doesn't need to be glowing, just starting to turn color should be enough.  Give it a few minutes to transfer the heat to the plug and then remove and give it a try to loosen it.  You also want to give the drive tool a couple good wacks with a hammer to help break the threads loose either before or right after heating.  Just hit the tool, not the ratchet...
This process can also be used on smaller screws by using a 40W soldering iron as the heat source.

Great idea, thank you!