Timing chain tensioner

OK now this goff ball commeting,,well hare goes,what the hell did or whow the hell did all those motors run for 100s of 1000s of miles with out all that fancy ****!!!! now I just asking mybe I missed something in all the ones I have put together.DO YOU mean that if I would have yoused one of them there thinks my motors would have RUN faster jump higher and hell it more than likely woulg have made its owen gas!!!!!!!!!! sheeeeeeuw doges!!!!!!!:banghead::banghead: well I say NO:oops:you don't need it......:violent1::violent1: ..........Artie