Schrick Performance Camshaft, 304 - 320i, 318i M10 81-85

Ultra hot cam for use with larger carburetors for big top end power

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Price:
$465.99

Schrick 304° performance camshaft for the M10 engine in the E21 320i and E30 318i provides a lot more top-end punch when used with larger carburetors and proper tuning. There will be less torque in the bottom-end with this cam as it shifts power optimization to the upper RPM range. This cam fits late M10 engines used in the E21 320i and E30 318i with a counter-clockwise rotating distributor (engines 1981-1984).

Camshaft tuning is all about optimizing air/fuel flow for your specific needs. The higher degree will open the valves sooner, deeper into the combustion chamber, and for longer time. Choosing the correct camshaft depends on the rest of your engine specs and goals. More aggressive cams should be paired with appropriate air and fuel upgrades to make full use of their operating specs.

New stiffer valve springs are recommended. The cam must be clearanced in the middle bearing so professional installation is recommended.

All Schrick camshafts are made in Germany using wear-resistant chilled cast iron and machined with advanced CNC equipment. They have a one year warranty.

M10 304 cam specs:
Intake Lobe Duration: 304°
Exhaust Lobe Duration: 304°
Intake Valve Lift: 10.7mm
Exhaust Valve Lift: 10.7mm
Intake Valve Lift @ TDC: 2.9mm
Exhaust Valve Lift @ TDC: 2.9mm
Valve Timing (IO-IC-EO-EC): 44-80 80-44
Intake Valve Clearance: 0.25mm (0.0098")
Exhaust Valve Clearance: 0.25mm (0.0098")

Manufacturer's Notes:
1. While new springs may not be required, you must ensure the new valve lift does not fully compress the spring. It may be necessary to shim the spring's installed height.
2. Valve timing and valve opening durations are shown minus the ramps.
3. Valve timing is shown in °Crankshaft in relation to TDC.
4. All valve lift figures are shown without deduction of valve lash, i.e. the actual valve lift is the stated valve lift minus the valve lash. Hydraulic lifters have no lash so the valve lift is the actual valve lift.
5. Lumpy or rough idle is caused by valve overlap (intake and exhaust valves open at the same time). Some of the lumpy idle can be adjusted out with a proper valve adjustment using the new specs. Some roughness may remain, depending on the aggressiveness of the cam.

Notice of Emissions Non-Compliance. This product is intended only for vehicles that may never be used, or registered or licensed for use, upon a public highway. This cam is designed to be used with all original, factory-installed equipment, including emissions controls. Removing, disabling, or altering emissions equipment on a pollution-controlled road vehicle is illegal. Installing devices or software that trick, disable, or modify emissions controls and monitors on a pollution-controlled road vehicle is also illegal. This product is sold only for racing, competition, track, hobby, or other off-road use. It is not legal for installation or use in California on any pollution controlled motor vehicle. It is not legal for installation or use on any pollution controlled motor vehicle in any state, province, or jurisdiction governed by, or which has adopted, CARB or EPA regulations.

BMW Fitments:

3 Series
E21 (75-83) > 320i
3 Series
E30 (84-91) > 318i
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