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Austin Mini Second Generation Performance Camshaft Pin Drive

Austin Mini Second Generation Performance Camshaft Pin Drive

Austin Mini Second Generation Performance Camshaft Pin Drive
Selected: CAM005
Austin Mini Second Generation Performance Camshaft Pin Drive
Austin Mini Pin Drive 268/278-400
Qty:
$266.50
Description
Elgin hot street cam, header recommended. 9.5:1 compression. Intake duration is 268 while the exhaust is 278 degrees. Valve lift with stock ratio rockers is .397" on the intake and .401" on the exhaust. Uprated valve springs also recommended! At  TDC intake opens at 27 Deg , and the exhaust closes at 32 Deg . At BDC intake closes at 61 Deg , and the exhaust opens at 66 Deg.  Valve clearance intake is .014 " , and the exhasut is .014 " .
Related Technical Articles:
Why is a camshaft like the heater in your house?
Created: February 25, 2014
Camshaft selection can be as complicated as you like, but for the ultimate performance, even if that means best gas mileage requires that you consider the entire envelope that the camshaft will work within. Non-technical issues such as intended application (street, race, milage or??), budget, expected RPM range, etc must be considered along with technical things like compression ratio, Cylinder head and valve sizes, exhaust system, carburetion, etc.
Camshaft Theory by Elgin
Created: January 28, 2006
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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