Thread: Leaky freeze plug

Tweet

I got the engine in my ride, after going thru it. Block was boiled and prepped. I have 1 brass freeze plug I put in that is seeping pretty good. I know I need to replace it, but is there a trick to assuring a seal ?

i put them in with plug driver and used 620 loctite on them .but i first clean the plug bore with 80 grit by hand to clean the block fron any old sealer or rust wipe clean with thinner then when dry i then put the 620 in the bore with a finger then coat the plug side with 620 and i use a loctite primer on the plugs first before the 620 .you may get away with out the primer on the plugs