| ole_Bill | -- 01-17-2011 @ 6:54 AM |
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My engine is 267ci with Edelbrock heads and an electronic 6V+ ignition in a crab distributer, with a hot coil. Right now I have H10 plugs in it. The maker of the ignition recommended a gap of .50, which seems a little wide to me. The engine has not been fired since being built and won't be run until the car is returned from the paint shop in a few weeks. So, I have time to ponder things such as the correct spark gap. What do you recommend?
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| TomO | -- 01-17-2011 @ 9:24 AM |
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My recommendation would be to go to a stock Ford distributer. They more reliable than any electronic distributer and with a coil rebuilt by Skip, will provide plenty of spark. If you must have the electronic distributer, go with the platinum plugs and the .050 gap. Make sure that your plug wires have good insulation. Tom
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| supereal | -- 01-17-2011 @ 11:36 AM |
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Electronic ignition in old cars can often be a headache. The reason they use such a large plug gap is to allow voltage buildup. This can, in some cases, burn off the plug electrodes. I agree with TomO's advice. The stock flathead is a low compression, slow turning engine, so an electronic ignition is of little benefit. Some install it to avoid point replacement, but good quality points, properly installed and set up, should last for 10,000 miles or more. Electronic ignition can be temperature sensitive, and subject to problems from the poor voltage regulation of the stock charging system.
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