| 36fordor | -- 03-18-2019 @ 8:57 AM |
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Had Red's headers & dual exhaust professionally installed on 35 Ford coupe at Ralph's Muffler shop in Avon, Indiana. Great, no problem fit & neat installation. Smithys 22" glasspacks & 2"pipes. Drove about 5 mi. home & car running very ragged from the get go, almost like not on all cylinders. Nothing obvious astray in engine compartment. Any ideas on this? Also looking for recommendations on good heat shield to protect battery. Pipe runs about 2" from Optima battery. Thank you.
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| carcrazy | -- 03-18-2019 @ 9:44 AM |
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Check all of the spark plug wire and ignition primary wire connections to make sure they are all tight. Check the ground wires also. Something may have been knocked loose during the header installation.
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| pauls39coupe | -- 03-18-2019 @ 6:07 PM |
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I agree with CarCrazy look for a plug wire that or two that got knocked off or put back on wrong. Also check that the engine ground wire is solid. I would look for something in that system. It is possible that your freed up exhaust is making the engine run lean but that would seem to be a long shot. Pull a couple of spark plugs to see if they are extremely white, indicating a lean condition.
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| supereal | -- 04-01-2019 @ 1:32 PM |
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Adding headers usually doesn't improve or degrade performance. About 99 out of 100 problems can be traced back to the last thing that was done. Check the proximity of the left side head pipe to the fuel line, which is located in the area. It doesn't take much heat to blow bubbles in the line. Getting clearance on the left side of dual systems is tricky, at best., to get around the clutch pedal and the steering gear. If the problem only occurs when the car is cold, but gets more pronounced as you drive, it is likely due to a form of "vapor lock" from the hot pipe. If you can't relocate the fuel line, try wrapping the line with heat resisting material. At our shop we use a white, fairly thin material for that.
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| TomO | -- 04-02-2019 @ 8:08 AM |
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2" clearance from the battery should not require heat shielding for the battery. The air moving past the battery and around the pipe should keep the battery temperature close to the air temperature in the passenger compartment. In addition to the above checks, make sure that both distributor caps are installed correctly. They may have been disturbed when the old pipes and manifolds were removed. Tom
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