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DCDoug -- One more tip on 1st time valve adjusting DCDoug -- One more tip on 1st time valve adjusting
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  #9 (permalink)  
Old 04-04-2010, 08:06 PM
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
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Quote:
Originally Posted by dcdoug View Post
I will replace the plugs, but should I gap them to .040 or .045? Not sure if the wider gap caused carbon buildup as well? I was planning on just going with the Autolite 45 copper plugs again.
I gap mine to .040 (Champion 426 - RC9YC5) -- and the MSD instructions recommend 40-45 for a gap. Over on the FE forum the choice of plugs is a hotly contested debate. Personally, I think they're all about the same. Adjust your valves, adjust your idle mixture, put in fresh plugs, and then monitor.
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