Just being devils advocate, over time could the HH 2 piece plugs( which are obviously good quality) be a bugger to get out? While undoing the cap screw, what happens if the T bar starts turning with the cap screw once backed off slightly? Just a thought, as a lot of these type of things are made for limited hour use, not longer term. I read there have been long term use with no leaks but what about removal after that long term,, just a question.
I know that car! I think we (Dad and I) met you at the Voodoo Kings cruise night at woodfire chicken in Itasca. We would have been in our whiteValiant,and would have been asking questions about your Hemi.
Could be.... I never had to take a set out that have been in long. These were in for 3 years but the motor hasn't been run. The bolt is stainless. The guys are right on that YES / NO picture. The wrong way and you barely get a squeee on the o-ring..... then the whole thing spins. The only thing I would do is go up a bolt size if I made a set.
Yep! I haven't been making longer distance cruise nights as often as I used to. By the time I get off work and get to the cruise night, it's almost over. I've been going to the Broken Oar, Cary, and McHenry cruise nights because they're close to home. I'm hoping to retire soon, and get back to cruising longer distance and having fun.
I made everything out of stainless to help prevent that, or at least slow it down. Since I made them myself, if I had to drill or cut them out to remove them, it wouldn't be any loss. I can just make a replacement. I doubt I have $5 apiece (other than my time) invested in them.
So let me ask.... these things look great and seal fine when installed right, but where does the freeze protection come in?? These thing would never pop on a freeze up.
It doesn’t because despite everyone calling them frost or freeze plugs they have nothing to do with freezing whatsoever. Correctly called core plugs, the holes are there to remove sand from the casting process, lots of engines don’t have core plugs at all…
Freeze Protection: It's called: *Properly* calibrated-for-the-(low)-temp-protection-needed-for-your-area-temps = Anti-Freeze. Either propylene glycol or ethylene gylcol . Also assists w/ raising the boiling temps, as does increased pressure for the closed-system cooling system. They use to use alcohol. As mentioned before, a couple of times: the *core* plugs/holes are actually for the sand-casting cores-extensions that position & hold the sand core (hopefully)correctly in place inside the larger pattern which has compacted sand all around it to provide the correct external & internal shape(s), while the whole mess is slathered & drowned in molten metal. Usually cast iron, or aluminum. Once cooled, they're broken off, the casting vibrated & hopefully, the internal-sand-mold breaks apart & all the sand & wires that are also in the sand-core come out of the casting. Most goes through other openings in the block like water-pump passageways, head-passageways for coolant, & also some oil passageways, etc. Doesn't always happen, completely. Posting pics would probably make things easier, but I'm not good w/that. ;( . Being referred to incorrectly, even for decades(or maybe a century+) doesn't change the definition. Hth. Marcus...
I huess you never saw a a block with freeze cracks and all the plugs still in place. A friend if mine ruined a fresh buint AMC 258 because he forgot to put antifreeze when he built it.there was a foot long crack in the side of the block, but the core plugs were hanging tight. Hard and expensive lesson learned.
Go to a marina or boat storage yard in the spring & you can observe first hand that "freeze plugs" have no effect on block damage !
Interesting..... but I've never heard these thing ever called anything other than a freeze or freeze out plug. Ok so this has come up because my "core" plugs were leaking. In flipping the strong back around which the builder put in backwards I feel some grit in those bores. Sand from the casting process I presume? Shouldn't it all be flushed out? And whats the chance of this "grit" migrating to the oil side with a bad gasket? Or is that impossible? Thanks for the edumaction fella's
The slang term "freeze plug" was coined many decades ago out of ignorance of the true purpose of the core plugs - they were never designed to be displaced by water freezing inside the block due to a lack of an anti-freeze/water mixture and their displacement is merely coincidental if freezing does occur.
coop46>>I feel some grit in those bores. Sand from the casting process I presume? >>And whats the chance of this "grit" migrating to the oil side with a bad gasket?>> Ed Murphy already calculated the chance is 100% in your case.
Murphy's law? Why do you say? I'm gona have the motor torn down, inspected and reassembled just for piece of mind.
Are you just fealing the ruff casting or is there loose sand like grit in the block. Just so your aware, the opening in the cor plug holes are ruff cast, not machined.
There’s always rubbish in the cooling jacket somewhere. Don’t worry about it. Give the cooling system a rinse through. Fill with antifreeze and away you go.
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