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Cam Doctor Explained

How The Cam Doctor Reads A Camshaft
Posted May 8 2013 01:48 PM by ChristopherCampbell 
Filed under: Tech

cam doctor at QMP racing engines

The Cam Doctor and similar machines have been around for a few years, but Mike Consolo of QMP Racing Engines explains why it so so useful for serious performance engine builders.


 Cam cards can tell you all the basic specs of a grind such as lift, duration, valve event timing, LSA, and so on. To get into the real minutiae takes a much more advanced reading of the lobes. 

The Cam Doctor is a machine that does precisely that. Using the lifter that is going to be run with the cam in the engine, the Cam Doctor slowly spins the cam taking constant readings to map the lobe precisely. Essentially it can provide an engine builder with all possible data at any point on the cam with extreme precision.

Since not too many shops have one of these machines, we asked Consolo to give us a brief demo of how the Cam Doctor works, what he can learn from it, and how it can be extremely useful in designing custom cams for an application. If you're an engine builder or techie gearhead, you've got to see it in action.

For more tech on how you can learn to pick the right cam for your own build, watch for the September issue of PHR!



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