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Do not run engine with pointers or spacer installed! Always counter hold the cam bolt shoulder washer with 32mm wrench while loosening or tightening cam bolt. Turn crankshaft clockwise. For off road use only! Post adjustment notes Attach timing light and adjust ignition timing. Ignition timing will be changed anytime a cam adjustment is made on the left camshaft. Euro engines with dual distributors do not require ignition timing adjustments. A final check with the pointers should be performed when the engine has been fully warmed up, as the expansion of the engine may change the advance/retard on one or both banks. Installation Notes Lubricate cams and face of hubs with 90W gear oil or similar before installing hubs. Slide hubs on cams. A dab of white paint on the housing marks will make setup easier. Writing the cam bolt torque setting on the gear face is also helpful. Cam Gear Installation Install cam gears on hubs, loose fit the 17mm cam bolts and shoulders. Center hub studs in gear slots. Install big washer and hand tighten 8mm nuts. One hub stud is offset, so the gear (and washer) will fit in one position only. Pointer Check Position the pointer on a (preferably machined) flat surface. For this demonstration, the handle of a 12” combination square is shown. Using a caliper, verify that the inside faces of the ring and the arm are 20mm (+-0.25) apart. If the tip is not within tolerance, carefully push or pull the tip so that the correct measurement is obtained. A distance other than the given tolerance will change the angle measured.
Tags : bolt torque, cam bolt, correct measurement, cam gears, center hub, porsche 928, check position, white paint, timing adjustments, cam gear, combination square, timing light, gear oil, 17mm, camshaft
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