Bedienungsanleitung Edelbrock Later Harley-Davidson 1624

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PERFORMER RPM™ CNC MACHINED CYLINDER HEADS
®
For 1984 & Later Harley-Davidson
®
Evolution “Big Twin” Engines
Catalog #1604, 1606, 1607, 1624, 16041 & 16061
INSTALLATION INSTRUCTIONS
PLEASE study these instructions carefully before beginning this installation. Most installations can be accomplished with common tools and
procedures. However, you should be familiar with and comfortable working on your vehicle. If you do not feel comfortable performing this installation,
it is recommended to have th

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CHECKING VALVE-TO-VALVE CLEARANCE 1. Before installing heads on engine, remove valve springs, retainers 5. Repeat this process for the other valve. Note that intake and and locks from one head. Leave the valve seals on to hold the exhaust "Valve lift at Top Dead Center" dimentions are usually valves in position during the clearance check. different. 2. Use a 6" caliper to measure valve tip height from the valve spring 6. With both intake and exhaust valves open to the correct pocket. specificati

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7. Remove the remaining fasteners (12, 13 and 14) holding the lower rocker arm cover (17) to the cylinder head (See Figure 1). 1. Push rod (2) 8. Remove the lower rocker cover and gaskets (15 and 16). 2. Spring cap retainer (2) 9. See Figure 4. Loosen each head bolt (1, 2) 1/8 turn following the 3. Upper push rod cover (2) cross pattern sequence shown in Figure 9 4. Spring cap (2) 5. Spring (2) CAUTION 6. Spacer (2) Loosen head bolts gradually, in a cross pattern, to 7. O-ring (2) prevent distor

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INSTALLATION PROCEDURE HEAD GASKETS You must use the correct head gaskets to achieve a 9.5:1 compression ratio for best power. Thicker gaskets will lower compression and power, and thinner gaskets will raise compression higher than advisable for use with today's unleaded pump gasoline. 1. Use Edelbrock gasket set #1640 for 1984-91 or #1641 for 1992 and later engines. This set includes the proper thickness head gaskets (.045") and the special intake manifold gaskets required for these cylinder h

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3. Cylinder Head bolt torque sequence (See Figure 8): The procedure for tightening the head bolts is extremely critical; not only to prevent gasket leaks, but to prevent stud failure and heads and cylinders distortion. CAUTION Be sure you thoroughly clean and lubricate the cylinder head bolts before tightening to the correct torque. Friction because of dirt or grime will cause the torque wrench readings to be incorrect. Clean and lubricate the threads with engine oil and screw the bolts onto t

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4. Install bolts and washers (11 and 12, 13 and 14). Slowly snug lower 5. Install the intake manifold according to the instructions provided rocker box fasteners in small increment (one at a time) in a cross with the intake manifold. pattern. This will bleed the lifters. Check carefully as you go to be 6. Install the carburetor, V.O.E.S. and ignition components. certain push rods are still in their proper position in the rocker arm. Tighten the 5/16" bolts (11, 12) to 15-18 ft./lbs. and tighten