Jump to content
Sign in to follow this  
Richard Cope

Petcock - Engine Block

Recommended Posts

Going to be flushing my antifreeze and want to replace the petcock in the engine block, hasn't been opened in years.   Like to have one a new one on hand before starting.  Does anyone know the thread size, thinking that it is probably 1/4 NPT however not sure.  The engine is a stock 201 used in a 1939 Plymouth.

 

Many Thanks  Richard

Share this post


Link to post
Share on other sites

the most common block drain is a simple butterfly handled valve available new at most any auto supply.   as PA says 1/4 pipe thread  9/16 wrench needed 

Share this post


Link to post
Share on other sites
10 hours ago, dpollo said:

the most common block drain is a simple butterfly handled valve available new at most any auto supply.   as PA says 1/4 pipe thread  9/16 wrench needed 

 

Same one I installed in this oil filter.

 

9.jpg

Share this post


Link to post
Share on other sites

Thank everyone for your replies, Evans antifreeze was put in the engine after being rebuilt many years ago, however less than 4,000 miles . Last summer Evans tested and indicated that it was till good,  however with the age want to give it a flush.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
Sign in to follow this  

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.

Terms of Use