Coolant Drain Plug Question

   #1  

Professor Marvel

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The drain cock for coolant on the block of my New Holland tractor corroded and broke off. I cleaned the mess up and chased the threads with a 3/4 in pipe tap. I replaced it with a 3/4 to 1/2 brass bushing with a 1/2 brass plug in it to drain it with. Is there any problem using brass in the block with electrolosis type corrosion due to dissimilar metals? If not, I like my new set up better than the original.
Thanks for input
 
   #2  

V1Rotate

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Maybe put some teflon tape on the threads?
 
  
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#3  
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Professor Marvel

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Yes Sir
Put Teflon tape on all joints so that should help but I just wanted to make sure that there is no dissimilar metals problem
 
   #4  

boomer1025

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There's no problem using brass fittings on the block, just put sealant on the threads.
 
   #5  

Soundguy

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they make a thread treatment to prevent any problems with dissimilar metal.. however I'd seldom had problems with brass plugs into cast iron ..
 
  
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Professor Marvel

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Thanks for the input folks. I put plenty of teflon tape on it so now I feel confident with the repair.
 
 
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