Quote:
Originally Posted by steve25
If you need to bring in any level of vacuum advance to get a motor to idle good in gear then you have too much Cam , too little cylinder pressure or a combination of both , or a plain and simple vacuum leak, or valves that are adjusted too tight!
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My Ed Heads are 87cc (from Butler) My studs are 7/16 and Morel said adjust with aluminum heads .30 preload. It is little more than 1/2 turn pasz zero lash. So were the noisy. I've adjustedet at 3/4 turn and no noisy anymore