Interference & Timing by Erik de Jong

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Presentation transcript:

Interference & Timing by Erik de Jong http://www.gates.com/common/images/Gates/ezlit/interfer2.jpg

Agenda Objective What is Interference What is Engine Timing Provide a general understanding of engine interference and timing What is Interference What is Engine Timing Effects of Engine Timing References Questions

Interference Intake and exhaust valves intersect the path of the piston Piston rises high enough to hit valves if they are fully extended Some engines have interference and some don’t Drawn in picture here

Engine Timing Intake valve opens during first down stroke, closes at bottom. Exhaust valve opens at bottom of last up stroke, and closes at top Timing belt driven by drive shaft is connected to cam shaft which controls when valves open and close. http://auto.howstuffworks.com/camshaft.htm Drawn in picture here

Engine Timing Effects If timing is not optimal; Performance is reduced Efficiency is reduced Damage to engine could result http://www.familycar.com/CarCare/TimingBelt.htm http://auto.howstuffworks.com/camshaft3.htm

References www.howstuffworks.com www.google.com (Images) Rye Zimmerman (Engine Enthusiast) http://www.familycar.com/CarCare/TimingBelt.htm