rust in drain plug threads

[paulspaddle]

The shop that winterized my boat didn't replace the drain plugs. The threads are rusted. I bought a small wire brush (from a dremel set) and hope I can clean them up this way.

Is there a product that I could spray on the threads first that 'may' loosen some of the rust?

 

[Don S]

Re: rust in drain plug threads

Standard pipe tap is what I use to clean up rust threads in the block and manifolds.

 

[paulspaddle]

Re: rust in drain plug threads

Thanks.

 

[Bondo]

Re: rust in drain plug threads

Ayuh,... Probably 1/4" pipe, or possibly 1/8" pipe...

 

[paulspaddle]

Re: rust in drain plug threads

I was wondering how I was going to match the thread. Will take my bolt to the store and get some help from the guys to make sure I get the right tap.

 

[Angrywasp]

Re: rust in drain plug threads

Take the plug with you and you will get the right tap. You can also smear some grease on the threads as it will help minimize/prevent further rust.