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Old 10-14-2002, 02:20 AM
cobrashoch cobrashoch is offline
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Join Date: Mar 2001
Location: Indianapolis, Indiana, U.S.A., IN
Cobra Make, Engine: Home built, supercharged 544cu/in automatic
Posts: 924
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Interesting the approaches guys use to break in a motor. How a motor is clearanced is the desiding factor. That is a direct function of your engine build. A racing motor is usially clearanced loose and can indeed be pushed hard but the backside of that is those motors don't last much over 60k miles or even less for street use. A tight engine does need to be brought up to speed more gradually, say 5000 miles or so as a rough guess. My advice is more practical. I haven't ever seen the perfect engine build yet. Even very good engine builders make boo-boos. There is always something that needs addressed it seems. Breaking them in graduially will bring out any problems in most cases, before you gernade a motor by pushing it. And that philosophy will work on a so called racing motors in most cases too. Dyno work for me is later, after I have some degree of knowledge of the motor and I have set up some sort of rough tune.
Agro1 - your engine builder should replace the gaskets, but in most cases the tune should be made on the car itself after the engine install. Very rare indeed is the engine builder that can get it right the first time, every time. And the money you spent usially has nothing to do with it. Your engine builder should repair this simple fix if he is worth worth his salt. LOL
cobrashock
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Last edited by cobrashoch; 10-14-2002 at 02:37 AM..
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