Re: broke the coolant drain on 400

Posted by Wayne Swenson on February 06, 2006 at 17:21:54 from (66.191.70.114):

In Reply to: broke the coolant drain on 400 posted by Steven D. Esser on February 05, 2006 at 20:25:58:

Take a Dremel type high-speed grinder with a 1/8" carbide straight bit and carve a slot on the inside of the broken pipe. Go as deep as you can without touching the radiator threads; repeat 1/3 of the way around and the broken pipe will fall out with a slight tap inward from a chisel & hammer.
Wear eye & face protection, gloves and long sleeves or you will have MANY small metal shards causing itch and irritation for a long time. (don"t ask!)
I have also used this proceedure to remove broken off sparkplugs that left the threads in the cylinder head. (Head removal is not necessary.) After removing the broken thread, use a magnet & compressed air to clean the remnants. Dig out all the old copper gaskets, re-thread the hole, and then put in a new sparkplug with Anti-sieze on the threads.

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