Thats what i do never had a problem.

 

I have a hardened steel drill and tap tool to put 3, 8-32 holes in a triangular pattern right next to the plug holes. Red lock-tite and round or pan head screws that overlap the edges of the soft plugs. FordRules:

 

Freeze plugs blowing out? Doesn't that mean there's not enough hard blok in it?

 

Ok, next question. I was going to start a new thread for this, but it is along the same lines.

As you can see the machine shop did not put any gasket sealer on the freeze plugs before they installed them. I asked them why and they said on a new block it is not needed.

I know for a fact first hand, with brass plugs you need gasket sealer for brass plugs on a seasoned block, now is that the case with a new one?

 

I thought that's what they're supposed to do, instead of the block cracking in low temps.

 

Isn't the point of a freeze to come out when there is too much pressure?

 

Yes it is, but at 180 mph and a blown head gasket pressurizing the coolant system the freeze plug can get pushed out. Now try stopping when you have water under a tire. Or better yet try driving and hitting water with only one tire. Only bad things happen then.

 

Those are "Welch plugs" and are to get the casting sand out at the foundry.

 

Correct, and that's their only purpose. This freeze plug thing just won't die though.

 

since i 3/4 filled my block i have this problem of blowing plug s out the block seal up when warm and only leaks when cold have done 12 passes so far minus 2 plugs will put screws in it when it comes out in 5 weeks

 

these are pretty sexy: http://moranmotorsports.com/products/catalog/product_info.php?cPath=31&products_id=48

 

also if you use the brass plugs they flex with the motor. i had a problem with the stainlass plugs walking out do to the motor flexing and the plug not and i had one blow out on me on the street and now i have them pined and use'd lock tite around the hole useing brass plugs and havent had a problem since.

 

I tapped all mine for NPT plugs, installed with ultra RTV. Either use antifreeze/water mix in the winter or be sure ALL water is drained. So-called freeze plugs really aren't, as noted above, and they won't save the block. I install the stronger steel plugs if I can't use NPT plugs, and use RTV which seals better than Permatex. I did a big block Mopar once, used block, that the surfaces must have been scratched somewhat, and Permatex wouldn't seal them, but RTV did.

 

Can anyone explain a little more on doing this? IE: what size rivets, what size hole to drill, etc. Looks like just a solid 1/8" rivet maybe drilled in about 30* maybe? Hows the rivet stay in place though?

Thanks

 

I watched the machine shop put these in. Nothing complicated. The freeze plug is a little below the block surface, just drill the hole above the freeze plug where the extra space is and hammer the rivets in.

The machine shop said they were 1/8" steel machinist rivets. Drill the appropriate hole for them. Not sure what that was, but can't be too hard to find out.

Hope that helped.