1958 MGA Restoration 32a I'm Back Popped Freeze Plug

Yeeeeep, after more than 16 months of not starting the engine, I started it up, and REVELED in the victory :). And then another damned bore plug popped (this is the third one). The third Welch plug popped, and I've replaced it with a Dorman neoprene rubber plug. It literally took 30 seconds to put it in, cinch the nut down, and declare victory. I am, in a word, THRILLED that the engine may be reliable enough to take the car around the block for a jog :)

[@jimclark7125]

This is the reason you change the core plugs when you have the engine out. Replace with brass and JB weld. BTW I put a engine back in my car that set under my workbench for 33 years. Ran better than when removed, did not rebuild carburetors just cleaned them up. I have followed your you channel and found it helpful. So turn to and get that car on the road.

[@ivanjoachim2153]

I had this happen on my 71 volvo 142E, I had my machine shop install my plugs, (I assembled everything else) everything went well for around 5 ish hours of driving, next day I try to make a show about 10 mins from my house, get up to the speed limit and I’m James bonding everyone behind me (maybe a mile from my house). Managed to hammer the plug back in and limp it home, removed that plug, installed a new factory style one (engine still in the car) with an air chisel and a special end to dimple the face enough. I’m assuming you’re having the same issue of them not being installed correctly

[@christos7440]

Don't know if they were improperly installed or not, to be honest. I found an older thread in a Volvo forum that talked about a plug batch being too small by a smidge. Regardless, I replaced them with neoprene plugs and called it a day...

[@user-xi7iy6dp3f]

I had the same problem of blowing welsh plugs it came down to wrong pressured radiator cap causing problem