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I measured the cam with the pointer directly on the lobe and the results don look anything like the Cam Catalogs Specs. Why?

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I measured the cam with the pointer directly on the lobe and the results don look anything like the Cam Catalogs Specs. Why?

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Measuring a cam profile with a pointer (not the actual follower) directly on the cam lobe DOES NOT give the true follower lift as it would in the engine. You have to either measured the cam profile with the actual follower, OR use the Virtual Follower feature, part of the Plus version of Cam Analyzer. Click here to see what the Plus version adds, paying close attention to the Virtual Follower feature. Check the graph below of typical test results “as measured” (pink line is lift, yellow line is accel) and after simulating a roller follower using Virtual Follower (blue line is lift, green is accel). You can see they are totally different, which explains why your measurements do not match the catalog’s cam specs. You can see the Virtual results, simulating a follower will give more lift at TDC, larger duration numbers, much lower acceleration over the nose of the cam.

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