valves


Behold the cam-less future

Mechanically actuated valves may soon be a thing of the past. We've made over a century's worth of improvement on the same basic combination of a camshaft, followers (or lifters), a poppet valve and a spring. We've gone from using pushrods and rocker arms to actuate the valvetrain to direct-acting buckets motivated by an overhead camshaft with variable phasing and lift. While engineering ingenuity has managed to wring incredible performance and flexibility out of these setups, there's only so far you can go before bumping into the laws of ... Read more →

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Autoblog Podcast #157: Mike Levine trucks along with us.

Mike Levine from PickupTrucks.com joins Chris, Sam, and Dan this week and gets a chance to talk about cars, too! 

 
 

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