In the earlier article we discussed about the general importance of the cam, the lobes and the cam shafts. We will now discuss about the basics of the cam shaft. The most important part of the cam shaft is the lobes. Their shape determines the performance of the engine. Variable cam shafts give better results. A fixed cam shaft is always bad for your engine.

When the piston moves downwards to allow for the intake of the air and fuel mixture, the intake valve opens. The intake stroke is called the top dead center or TDC. The intake valve closes when the piston reaches the bottom.

The exhaust valve opens just as the piston reaches the bottom. The combustion stroke is called the bottom dead center or BDC. The exhaust valve closes when the piston finishes the exhaust stroke. The valves are closing and opening at least 33 times a second when the engine is working at a high speed.

The piston is moving at a faster rate too. The air and fuel mixture, then, is also moving quickly and running into the engine cylinder. The longer the lobe remains open, the faster is the intake of the mixture. The faster the intake, the faster the cylinder accelerates. The end result is a faster and better performing engine.

To know more about how the cam shaft in your engine works, do visit the New Jersey State Auto Auction.

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New Jersey State Auto Auction

406 Sip Avenue

Jersey City, New Jersey 07306

Phone: 201.355.4138

Website: www.NJStateAuto.com