RoadsterRich Posted April 19, 2002 Share Posted April 19, 2002 Showing my ignorance again...<P>Stalling my work on the car is a pesky 1/8" pipe plug. It sits over my #6 cylinder and is used to determine when #1 & 6 are at TDC. It is a square head on it (sticks up square) it is bigger than 1/4" and smaller than 5/16". I looked it up online and it says the flats are .28" on the side. This fits with the 1/4" being too small and the 5/16" being too big. Is there a special wrench for these pipe fittings? If so where do I get one, what is it called and what size would I need?<P>Thanks,<P>Rich Link to comment Share on other sites More sharing options...
Guest Posted April 19, 2002 Share Posted April 19, 2002 Snap-on has a special tool PP409 I think,anyhow it is made for a one-eighth pipe plug. Link to comment Share on other sites More sharing options...
another old car Posted April 19, 2002 Share Posted April 19, 2002 Rich<BR>you might try a welding supply store - they have a bottle wrench for gas cylinders , that is also a odd size Link to comment Share on other sites More sharing options...
RoadsterRich Posted April 19, 2002 Author Share Posted April 19, 2002 Thanks Methuselah! That's exactly the socket I need.<P>Just have to love the DF's here, where else can you get such a great response in so little time with good information!<P>Thanks again,<P>Rich Link to comment Share on other sites More sharing options...
Guest leadfoot Posted April 19, 2002 Share Posted April 19, 2002 Although I wouldn't actually recommend this, I have a complete rachet socket and open end wrench tool set (approx. 75 pieces including hex and square sockets) from the late teens or early twenties. The patent date on the rachet is 1913. The set, which weighs about 25 pounds, is stored in a cool oak box. I've used these wrenches all the time, including the square head plugs that seem to be common on early cars. Prior to having these wrenches, I used a monkey wrench for plugs. Link to comment Share on other sites More sharing options...
Guest De Soto Frank Posted April 22, 2002 Share Posted April 22, 2002 Question:<P>I've seen these "pipe plugs" in the cylinder head for "timing purposes", however, the ones in my Chryslers have had hex-heads on them; which is "correct" - square or hex?<P>If it doesn't cost show points, a hex head pipe plug would be easier to deal with from a service standpoint... Link to comment Share on other sites More sharing options...
RoadsterRich Posted April 22, 2002 Author Share Posted April 22, 2002 That is a good question Frank. Mine refers to them as a 'pipe plug', and that is it. The only 'picture' I have with a top view of the engine appears to be either a really good artists rendering or an artists 'enhancement' of a photograph. It appears to show it on mine as a 4 sided square, but then again the information in my owners manuals is often not exactly correct. I have the first and second editions and they both contradict the car in many places.<P>I have talked to a few other 77 owners who did have the square plugs, perhaps as was often the case with Chrysler they used whatever was handy at the time of assembly.<P>Rich Link to comment Share on other sites More sharing options...
old buicks Posted April 27, 2002 Share Posted April 27, 2002 I currently have a Model 75 Chrysler 1929 in the shop and the plug on #6 on this car uses a large straight slot screwdriver. We restored another M75 about 2 years ago for another customer and I think his #6 had a four sided pipe plug if I remember correctly. Link to comment Share on other sites More sharing options...
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