Jump to content

Frost plug in thermostat housing


Recommended Posts

Put a frost plug in the thermostat housing today. While drilling the hole, the plug came loose. After drilling the hole, tapped it back in using a socket but was able to push it out with a pencil. Installed again with a few good blows with a hammer and socket, managed to twist it a little and now seems to be snugged in. I was wondering if I should try a few spots of JB Weld or something to make sure it doesn’t fall out. It is a 1 1/2 inch frost plug. 

Link to post
Share on other sites

I drilled a 5/16 inch hole in the center of the plug. I’ve read that some drill a 1/4 “ hole. I really don’t think a 1/16th of an inch could make any noticeable difference. I cleaned the bolt holes in the block really good before mounting the pump and the thermostat housing. Also used tight fitting brass washers in place of lock washers.  I also used thread seal on the bolts account they enter the water jacket. 

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...