Removing engine drain plug

[Art B.]

My '61 has a "frozen" engine drain plug on one side. After several attempts to loosen it, I ended twisting off the head. Now the remainder of the plug is flush with the block. I could just leave it, but I would like to get the plug out so I can properly drain that side of the block. I know I will have to use a tap, but I am concerned that I don't damage the threads on the block. Any suggestions?

P.S. Hope to see some of you at Kissimmee next month. I have not been to that

meet for several years. I decided that this is the year to get away from

the snow and cold of Northern Minnesota for awhile.

[Mike M.]

Re: Removing engine drain plug

If block still in chassis, i think i'd leave it alone till next time engine pulled. in order to center punch, drill and extract and/ or retap, you'll be much more comfortable doing all this with block of your workbench or engine stand. mike

[Clem Z.]

Re: Removing engine drain plug

the best way to remove frozen plugs is use a electric or air impact wrench. the viberations will help lossen the plug. i have also had good results using the motorcycle type impact tool that you hit with a hammer

[Wayne C.]

Re: Removing engine drain plug

Perhaps drilling a dead-end hole, applying some heat and lubricant/wax, and using an ez-out? (ie, treat it like a broken stud or bolt)

[Art B.]

Re: Removing engine drain plug

Mike and Wayne: Thanks for the advice. The engine was rebuilt a few years ago and is running good. I hadn't planned on pulling it any time soon to do it on a bench or stand as you suggested, Mike. I thought of using a torch to get a little heat to it but I don't like doing that with gas lines so close.