thx
2007-11-11 14:52:24 · 5 answers · asked by Dan. 3 in Cars & Transportation ➔ Maintenance & Repairs
well an engine is a modified pump. It's efficiency is based on how much power it can move in and out of it. The more an engine can flow in and out the more power it will make. More oxygen in air plus more fuel equals more power. So aftermarket camshafts alter the duration and lift. Longer duration and more lift to get more air into the cylinder to make more power. You are increasing volumetric effiency and usually you should have a intake, better manifold and throttle body to take advantage of increased airflow. I would also recomend better valves, retainers, and valve springs while you are in there for further performance gains
You will need to take off the valve cover and expose the valve train. Make sure you are at TDC. You might have to take off the distributor depending on the application, the timing belt will need to be loosened and moved off the sprockets. The camshaft retaining parts need to be taken off then the camshafts should just pull out with the sprocket gears. Usually when you change cams it is a good idea to buy adjustable cam gears to change valve timing. Then go reverse putting them in, making sure everything is in line. I would suggest a good mechanic as well. It is a good idea to buy a piggy back ecu to adjust the fuel and timing to make power and get some dyno time with an experienced tuner.
2007-11-11 19:27:03 · answer #1 · answered by Corey the Cosmonaut 6 · 1⤊ 1⤋
A performance cam shaft has changes the duration the valves are open, the timing of valve opening and closing and can change how far the valve is opened(known as lift). The main down side to performance cams is generally the idle of the engine will get a little bit rough depending how big you go. You will also need to decide if you want more bottom end, mid range or top end performance. As for installing them there not to bad in most cars but lifters and tappets need to be remove unless it is overhead cam. But timing is very important one tooth out could cause valves to hit pistons and then the head will need to be taken off to fix them. I suggest getting a mechanic to do the job for you.
2007-11-11 15:23:57 · answer #2 · answered by Anonymous · 1⤊ 0⤋
Performance camshafts can increase performance by slightly altering the valve timing, permitting more efficient transfer of gasses into and out of the combustion chamber.
2007-11-11 15:02:54 · answer #3 · answered by Deirdre H 7 · 2⤊ 2⤋
How Camshafts Work
2016-12-29 09:04:21 · answer #4 · answered by lisk 3 · 0⤊ 0⤋
http://www.engineparts.com/motorhead/techstuff/caminstall.html
2007-11-11 15:33:22 · answer #5 · answered by tronary 7 · 1⤊ 1⤋