Schrick - Catalog

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Engine Camshaft, valves , springs, Tappets,

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performance engine components 2011

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explanation of the catalog tuners and engine builders will nd in this catalog a selection of the camshafts and other engine performance parts that we have in stock or can deliver on short notice which camshafts are good for streettuning if the vehicle is intended for normal street use i.e with a stable engine idle and the ability to pass an emissions test idle to lower rpm range it is important to consider a small valve lift at tdc the table gives a gudeline for valve lift at tdc 2 valve engines with solid lifters 4 valve engines with solid lifters 2 valve engines with hydraulic lifters 4 valve engines with hydraulic lifters 2.3 mm 1.5 mm 1.9 mm 1.1 mm height so that the increased lift will not overly compress the valve springs possibly causing spring breakage or unacceptable cam/follower loads what is the difference between a sportand standard cam-shaft standard camshafts o er a good compromise between the daily requirerements from an automotive engine sustained high speed on open roads smooth engine idle at low rpm and low exhaust emissions if the importance of one or more of these parameters is reduced the camshaft can be designed to function better in the remaining parameters racing camshafts o er a substantial power increase at high rpm engine idle at low rpm is not possible anymore sport camshafts inrease the valve lift valve opening duration and the inlet/outlet valve overlap this improves the cylinder lling at high rpm engine idle at low rpm becomes erratic due to the mixing of intake air and exhaust gasses when we do not list your required camshaft we have several possibilities to help you 1 we grind your required pro le on a camshaft blank the machine set-up cost will be added to the price of a comparable camshaft 2 we can machine a camshaft from billet steel single piece or smallbatch production we would be glad to help and advise you on your speci c application when these values are exceeded the engine idle will become increasingly unstable and the torque delivery in the lower rpm range will be noticably weaker camshafts with larger valve durations and a resulting higher valve lift at tdc should only be considered for racing applications or when each cylinder has it`s own butter y valve i.e 2 twin-choke carburettors on a 4 cylinder engine we have to point out that technical changes to an engine voids the vehicle`s type approval explaining the listed technical data valve timing and valve opening durations are shown minus the ramps valve timing is shown as io inlet opens in °crankshaft before tdc ic inlet closes in °crankshafts after bdc eo exhaust opens in °crankshafts before bdc and ec exhaust closes in °crankshafts after tdc peak timing is shown as °crankshaft and de nes the angle between the gas exchange tdc and the lobe center line of the inlet or exhaust valves all valve lift gures are shown without deduction of valve lash i.e the actual valve lift is the stated valve lift minus the valve lash since engines with hydraulic lifters have no valve lash the stated valve lift is also the actual valve lift valve lift at tdc is also shown without deduction of valve lash i.e the actual valve lift at tdc is the stated lift minus the valve lash the graph shows the valve opening duration and valve lift curve for standard and sport camshafts it also shows the important di erences in inlet/exhaust valve overlap and valve lift at tdc why are schrick camshafts so special they are manufactured by highly quali ed specialists who also supply the automotive industry they are machined to precise tolerances using the latest cnc machines they are usually made from expensive extremely wearresistant chilled cast-iron warranty 1 year without kilometer limitation what precaution must be taken with valve springs when we recommend the use of special valve springs it is advisable to do so schrick camshafts usually have an increased valve lift if the standard valve springs are used it is important to increase the spring`s installed general note all products in this catalog except advertising material are only available through the automotors trade this catalog supersedes all previous catalogs part speci cations and prices subject to change we may change technical speci cations of our products without notice shipments back to us will only be accepted if we agreed before and in suitable protective packaging we will credit the invoiced amount -15 referring to the valid catalog price products which reach us will not be accepted if they were modi ed or have damages this catalog is valid from 2

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