Classic Mini Cooper - ELGIN Camshaft Mini Cooper

Articles and Additional Information

Camshaft Theory by Elgin
Considerable information has been recorded about numerous aspects of the four stroke internal combustion engine. Nevertheless, only a small percentage of people really understand how it works and even fewer still know how to modify an engine to suit their needs. I will try to simplify this complex subject by discussing some basic principles that may be overlooked or misunderstood by the average person. First, it is very important to understand the relationship between piston travel directions and valve timing events. The reason this relationship is important is because it is one of the few things that is relatively easy to adjust/change. The camshaft which opens and closes the valves makes ONE complete revolution (360 degrees) while the crankshaft moving the piston up and down the cylinder rotates TWICE (720 degrees). Camshaft timing is usually expressed in terms of crankshaft degrees relative to the piston location in the cylinder. That is, relative to Top Dead Center (TDC) and Bottom Dead Center (BDC), respectively. Note that during the four strokes of a piston in an internal combustion engine the crankshaft will rotate 720 degrees and the piston will be at each TDC and BDC twice.
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Camshaft Design by Dema Elgin
Much information has been recorded about the four stroke internal combustion engine and yet only a small percentage of people really understand how it works and fewer people know how to modify an engine to suit their needs. It is very important to understand which way the piston is traveling and where the valves are during the four strokes.
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Big-Bore Power Units from MINI MANIA for the Mini Cooper ....
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244/264-327 PIN DRIVE MINI COOPER CAMSHAFT Pin drive Elgin cam for mild road, smooth idle. This reground camshaft has an intake duration of 244 degrees and an exhaust duration of 264. The valve lift is .327"

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250/264-327 PIN DRIVE MINI COOPER CAMSHAFT Pin drive Elgin cam, one up from Cooper 'S' spec. Duration of the intake is 250 degrees, the exhaust is 264. Valve lift is .312" on intake and .327" on exhaust assuming 1.25/stock ratio rockers.

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