You'll have to do some plug chops to check, but since most of them won't be at redline in top gear it shouldn't be a problem. If not you're bucks ahead by getting a jet kit from a known source and throwing it in. If you have access to jets then the project is comparatively easy, if a bit time consuming. Frankly, I have little experience with CV carbs - my mantra is "Throw a set of flatslides on it and dial them in!" Not much help for those amongst you who don't have a grand or so to throw at the problem. How far to go is problematic as CV carbs (I assume you are running CV carbs) are airflow sensitive, so restricting the filters changes the slide's reactions at a particular throttle / RPM. Using this as a guideline you can assume that you're going to have to fatten things up across the board when the tape is removed, which should be done ASAP. If it's chuffing soot then you were rich to begin with, and conversely if it starts running good then you're lean. Click to expand.If the CO tester can be portable it may still be useful - if, however, you can't load the motor and check for CO levels without spending a bundle on dyno time then chuck it.Īs to the mixture strength, taping the filters can be used as a tuning tool only insofar as it will tell you where the present jetting is.
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