LFT_QBA_1980 Posted February 26, 2015 Report Share Posted February 26, 2015 1948 Plymouth Special Deluxe Quote Link to comment Share on other sites More sharing options...
Plymouthy Adams Posted February 26, 2015 Report Share Posted February 26, 2015 1941 Dodge Luxury Liner Quote Link to comment Share on other sites More sharing options...
BigDaddyO Posted February 26, 2015 Report Share Posted February 26, 2015 1947 Plymouth Club Coupe DeLux Quote Link to comment Share on other sites More sharing options...
LFT_QBA_1980 Posted February 26, 2015 Author Report Share Posted February 26, 2015 Freeze Plugs, Need to know about different type of Freeze plugs, I ordered some and they are metal like this pic. Has anyone used these and why are these different from the copper looking once. Also what way do they go in? I was told that I can use them because we are now using antifreeze so its OK. What's your expertise on this matter? Thanks, LFT Quote Link to comment Share on other sites More sharing options...
Don Coatney Posted February 26, 2015 Report Share Posted February 26, 2015 2006 SRX, 1997 F-150 Quote Link to comment Share on other sites More sharing options...
Don Coatney Posted February 26, 2015 Report Share Posted February 26, 2015 A new ground hog day thread? Quote Link to comment Share on other sites More sharing options...
Plymouthy Adams Posted February 26, 2015 Report Share Posted February 26, 2015 (edited) these are affectionately called freeze plugs but they are actually core plugs....when casting the sand is removed through these holes and then plugged...You have the correct style for the flathead in the picture..you insert them into a cleaned and dry hole with sealer and most prefer to use Permatex brand and then dimple the center..this will cause the disc to expand 360 around the edge and make a good tight metal to metal seal..usuallyy a ball peen hammer rounded end is used with another hammer striking the back o that one..other folks have other methods... Edited February 26, 2015 by Plymouthy Adams 1 Quote Link to comment Share on other sites More sharing options...
LFT_QBA_1980 Posted February 26, 2015 Author Report Share Posted February 26, 2015 Thank you Plymouth Adams, So let me get this correct the rounded side of the freeze plug goes outwards. So when you hit it with a Ball Peen Hammer it will get even tighter? Also how long do I wait before I drive the car again? Quote Link to comment Share on other sites More sharing options...
Plymouthy Adams Posted February 26, 2015 Report Share Posted February 26, 2015 at least till you get the water back into the car... Quote Link to comment Share on other sites More sharing options...
Reg Evans Posted February 26, 2015 Report Share Posted February 26, 2015 Am I seeing 1 3/8" on those plugs ? Aren't they suppose to be 1 5/8" ? Quote Link to comment Share on other sites More sharing options...
Plymouthy Adams Posted February 26, 2015 Report Share Posted February 26, 2015 this appears to be a complete core plug kit Reg to reseal the entire engine.....the top ones are the needed 1 5/8 Quote Link to comment Share on other sites More sharing options...
Reg Evans Posted February 26, 2015 Report Share Posted February 26, 2015 Oh, OK....that splains it. Quote Link to comment Share on other sites More sharing options...
Dave72dt Posted February 26, 2015 Report Share Posted February 26, 2015 1998 Chrysler Sebring convertible Quote Link to comment Share on other sites More sharing options...
Frank Elder Posted February 26, 2015 Report Share Posted February 26, 2015 Some people put a double plug in the back of the engine....... Quote Link to comment Share on other sites More sharing options...
LFT_QBA_1980 Posted February 26, 2015 Author Report Share Posted February 26, 2015 these are affectionately called freeze plugs but they are actually core plugs....when casting the sand is removed through these holes and then plugged...You have the correct style for the flathead in the picture..you insert them into a cleaned and dry hole with sealer and most prefer to use Permatex brand and then dimple the center..this will cause the disc to expand 360 around the edge and make a good tight metal to metal seal..usuallyy a ball peen hammer rounded end is used with another hammer striking the back o that one..other folks have other methods... Thank you, Will look into doing them soon. Will leave info If I do it or someone else does it for me. This will be the first time. I'm a little afraid of messing things up. Quote Link to comment Share on other sites More sharing options...
Dave72dt Posted February 26, 2015 Report Share Posted February 26, 2015 Go for it. You won't learn how any younger. 1 Quote Link to comment Share on other sites More sharing options...
casper50 Posted February 26, 2015 Report Share Posted February 26, 2015 They are easy to do LFT. Just put them in my rebuilt flatty. Quote Link to comment Share on other sites More sharing options...
LFT_QBA_1980 Posted February 27, 2015 Author Report Share Posted February 27, 2015 Go for it. You won't learn how any younger. Done it. Thank you for your support. Its true "Won't learn how any younger". After leaving it for almost 24 hours and filling it with antifreeze time to drive it after work tonight. And if all works out fine Tomorrow Fundraiser for the Humane Society of Imperial County, CA. Quote Link to comment Share on other sites More sharing options...
timkingsbury Posted February 28, 2015 Report Share Posted February 28, 2015 Freeze Plugs, Need to know about different type of Freeze plugs, I ordered some and they are metal like this pic. Has anyone used these and why are these different from the copper looking once. Also what way do they go in? I was told that I can use them because we are now using antifreeze so its OK. What's your expertise on this matter? Thanks, LFT They are known by a lot of different names, frost plugs, freeze plugs, expansion plugs and a number of things.. The copper looking ones is a coating process or plating process that is put on to the metal and there are a number of different coatings used by different manufacturers. If you were using only distilled water (and I am not suggesting you do that) then what the expansion plug is made of would be of less importance than when you use antifreeze if you lived where it never freezes. The reason being is antfreeze is corrosive and a number of types of antifreeze have corroded these plugs in the past. Now yes, if you live in a climate that freezes and if the temperature does not drop below the point that the antifreeze you are using fails then it will not be freezing that is the issue with these plugs. And if it does drop below the temperature that your antifreeze can protect, it may push one of these plugs out and avoid damaging your block, but it may also crack the block elsewhere because there is no guarantee that the freeze up only pushes on these plugs. Personally I use as good a quality engine coolant as I can find (which yes could start another thread) and as I am sure you can see some of the plugs in your engine block are easy to get at and others are an absolute pain in the backside to get at. So for me, like the coolant I use the best plugs I can buy. For me those are brass ! Your engine uses two different sizes.. 3/4" and 1 5/8". here is what I use: Pioneer automotive EP - 3 - B - 10 On the actual brass plug it says p3 3/4" (they come qty 10 in a box) and & EP-14-B - 10 which are 1 5/8" there used to be tons of places that sold them in solid brass.. If people have other sources I would love to know as I can only find 1 supplier that still carries them. Lots can special order but only 1 seems to stock them. So not to be seen to be violating a policy of pitching product, I wont mention that supplier here. If you want to know drop me a line. Tim ps: I attached a picture of them installed in my Engine.. Quote Link to comment Share on other sites More sharing options...
Dodgeb4ya Posted February 28, 2015 Report Share Posted February 28, 2015 I have never seen a 3/4" core plug fit any Mopar flathead... The Dodge and Plymouth use a 1-3/16" core plug up on the head. The DeSoto and Chrysler use a 1-3/8" core plug on the head All the others are 1-5/8" as mentioned. Except the rear cam plug OE is brass and measures 1-3/8" The bell housing rear 1-5/8" core plugs also were brass and doubled up from the factory . The front of engine hidden 1-5/8" core plug behind the engine mount plate was brass as original equipment. Bob 1 Quote Link to comment Share on other sites More sharing options...
deathbound Posted February 28, 2015 Report Share Posted February 28, 2015 They are known by a lot of different names, frost plugs, freeze plugs, expansion plugs and a number of things.. So not to be seen to be violating a policy of pitching product, I wont mention that supplier here. If you want to know drop me a line. Tim ps: I attached a picture of them installed in my Engine.. Tim, I don't think there's a problem mentioning a supplier, as long as you're not affiliated with selling said product....otherwise, it would go in the Classified section. At least that's MY interpretation. Engine looks nice, BTW. 3 Quote Link to comment Share on other sites More sharing options...
Andydodge Posted February 28, 2015 Report Share Posted February 28, 2015 When I've had to replace these things, we call them Welch/Welsh plugs here in Oz, freeze?......whats freeze.....I always try to use brass plugs.........I replaced all the block side plugs in the 41 Plymouth with brass plugs, a couple of the steel ones were weeping when I got the car so just replaced the lot with the brass ones, gave the water passages a good poke around with some stiff wire then hosed and hosed the insides.......replaced the plugs, filled the radiator, ran the engine for a while then dropped the lower & upper radiator hose and squirted the garden hose in those holes........seemed to get a bit of crud out...............andyd Quote Link to comment Share on other sites More sharing options...
Don Coatney Posted February 28, 2015 Report Share Posted February 28, 2015 I have never seen a 3/4" core plug fit any Mopar flathead... The Dodge and Plymouth use a 1-3/16" core plug up on the head. The DeSoto and Chrysler use a 1-3/8" core plug on the head All the others are 1-5/8" as mentioned. Except the rear cam plug OE is brass and measures 1-3/8" The bell housing rear 1-5/8" core plugs also were brass and doubled up from the factory . The front of engine hidden 1-5/8" core plug behind the engine mount plate was brass as original equipment. Bob I also have never seen a 3/4" Welch plug anywhere on the car. If I recall the size correctly 1" plugs are used to seal the king pins on a P-15. Some but not all master cylinders also use a 1" plug. Quote Link to comment Share on other sites More sharing options...
Jerry Roberts Posted February 28, 2015 Report Share Posted February 28, 2015 (edited) I just measured the welsh plug in my head located above the temperature gauge bulb . It measures 1 3/16 inch . Edited March 7, 2015 by Jerry Roberts Quote Link to comment Share on other sites More sharing options...
Dodgeb4ya Posted February 28, 2015 Report Share Posted February 28, 2015 I'm really going to be upset if there are two sizes of cylinder head core plugs for the 218/230 engines! Quote Link to comment Share on other sites More sharing options...
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