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Discussion Topic:
Popping out the tailpipes
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TomO |
06-29-2010 @ 6:17 PM
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Senior
Posts: 7253
Joined: Oct 2009
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I would first try a stock distributor. The Mallory ones are not as good as the Ford dual point distributor.. My reason for suspecting the distributor is that the engine ran good and is deteriorating
Tom
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gary duff |
06-29-2010 @ 10:58 AM
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Member
Posts: 3
Joined: Oct 2009
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Sounds to me like you have some valve guide keepers between the top of the spring and the guide, instead of the groove in the guide. This causes the guide to pop up into the port and reduce the spring pressure. Gary
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shogun1940 |
06-29-2010 @ 9:06 AM
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Member
Posts: 464
Joined: Feb 2010
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try a cylinder leak down test before you tear in to the springs then you will have an idea what cylinder was the3 culprit or take one plug off at a time to see if you caN ISOLATE THE BAD Cylinder, we used to do cylinder balance test with a tach and vacuum guage. the first 4 cyl. against the last 4 and then every other cyl. against the next set of every other set
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JM |
06-29-2010 @ 5:48 AM
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Senior
Posts: 822
Joined: Oct 2009
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Patricks, Reds Headers, Speedway Motors, Flathead Jack, Dick Spadaro, maybe Joblot and others will have the heavier LZ valve springs. JM
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40 Coupe |
06-28-2010 @ 4:53 AM
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Senior
Posts: 1676
Joined: Oct 2009
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DVW: I would NOT take the engine apart until I explored both the carb and the distributor and do some more testing. Your running on the center Carb. I would get in touch with Max Musgrove in Utah and ask for his Carb. suggestions. Then have the distributor checked out including the coil output and condenser. Are you running a vacuum line to the distributor for advance? What plugs are you using? What is the vacuum level at idle? You may have a combination of a couple of issues leading to the problem.
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supereal |
06-27-2010 @ 10:10 AM
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Senior
Posts: 6819
Joined: Oct 2009
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We buy our performance cam springs from suppliers such as Jeggs or Summit. Red's Headers would be another source. If you can't find them, the later 1BA type can be used, too. One other thought: before you tear into your engine, be sure that you don't have crossfire between plug wires, particularly if you have non metallic wires. One way to check is to wait until it is dark, start the engine and spray some water on the wires and watch for any arcing between the wires. Also, be sure to check the inside of the distributor cap for a carbon path. Either can produce exhaust popping. Since your problem took a while to show up, and has gotten worse, those are places to watch.
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37RAGTOPMAN |
06-27-2010 @ 7:56 AM
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Senior
Posts: 1961
Joined: Oct 2009
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FLATHEAD JACK sells a lot speed equipment and will tell you which ones will work the best, he sell his catalog for around $10.00 but worth the money for the info that is in there, hope this helps.37RAGTOPMAN KEEP ON TRUCKIN,
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DVW |
06-27-2010 @ 5:10 AM
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Member
Posts: 5
Joined: Jun 2010
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I checked with Mac's and Dennis Carpenter and all I find is stock valve springs, where do I get stronger ones?
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supereal |
06-26-2010 @ 1:49 PM
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Senior
Posts: 6819
Joined: Oct 2009
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At 75, I'm in the same boat, and sometimes "popping out of MY pipe" too! I'm fortunate to have two mechanic sons at our shop who are patient with the "old man". Frustration is built into the old car hobby, I've found, at any age, and while my mental gears grind a whole lot slower, at least they are still grinding!
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DVW |
06-26-2010 @ 11:55 AM
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Member
Posts: 5
Joined: Jun 2010
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This has become very frustrating. I am 74 years old and have forgotten what I once knew. I built this car the way I wanted it when I was 17 but could not afford it then. I want to thank all who have responded, I welcome all suggestions.
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