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How to Choose Camshafts & Time Them for Maximum Power by Des Hammill

How to Choose Camshafts & Time Them for Maximum Power Des Hammill ebook
Publisher: Veloce Publishing
Format: pdf
ISBN: 1903706599, 9781903706596
Page: 53

By Rob Hosking – Choosing a camshaft is pretty simple. But having the greatest flowing heads counts for zero if the valves are not opened sufficiently or at the right time in relation to the crankshaft's rotation, and that very important function falls to the camshaft. If a cam has a 108 degree lobe centerline it means that the max lift on the Intake and exhaust is 108 degrees apart on the cam. At the very least, most view the process as time consuming and technically challenging, if not overwhelming. If you want to increase low-end torque to launch a heavy bike from a stop, or top-end horsepower for greater top speed, choosing the appropriate cam configuration will help you achieve the desired performance results. Let's face it, modular Ford owners do not look lovingly at their engine bay when it comes time to swap cams. Duration is the amount of time a valve is opened and is measured in crankshaft degrees. Most cam manufacturers give you a rough idea on track size, and a set in stone RPM range to go from, so the basic homework is done by them. If maximum torque and power along with the biggest area under the curve is the target, then only one LCA will do the job, and it has to be the one the engine wants, not one you or someone else doing your guessing for you arbitrarily decides is the one needed. Fujifilm's raft of FinePix cams at CES are headlined by the HS50EXR, which aims to please those who love point and shoots, but aren't quite ready to make. Once your RPM range is known, you will have an easy time finding some cams that may work, but how to narrow it down from there? But keep in mind that the Nevertheless, these variables are critical in determining not only an engine's maximum power output but also the shape of its power curve.