SCREAMIN' EAGLE PRO CNC PORTED OE CYLINDER HEADS

J057912013-07-01

GENERAL

Kit Number

16500259

Models

For model fitment information, see the P&A Retail Catalog or the Parts and Accessories section of www.harley-davidson.com (English only).

Additional Parts Required

Each head requires one 12 mm spark plug. We recommend Screamin' Eagle Performance Spark Plugs (see Screamin' Eagle Pro catalog).

On all models, a Top End Overhaul Gasket Kit and adjustable or Screamin' Eagle Perfect Fit pushrods must be used.

All of the above items must be purchased separately and are available from a Harley-Davidson dealer.

WARNING

Rider and passenger safety depend upon the correct installation of this kit. Use the appropriate service manual procedures. If the procedure is not within your capabilities or you do not have the correct tools, have a Harley-Davidson dealer perform the installation. Improper installation of this kit could result in death or serious injury. (00333b)

NOTE

This instruction sheet references service manual information. A service manual for your model motorcycle is required for this installation and is available from a Harley-Davidson dealer.

Kit Contents

See Figure 2 and Table 1.

NOTE

This kit is intended for High Performance or Racing applications only and is not legal for sale or use on pollution controlled motor vehicles. This kit may reduce or void the limited vehicle warranty. Engine related performance parts are intended for the experienced rider only.

NOTICE

Do not exceed the maximum safe RPM specified below under any conditions. Exceeding the maximum safe engine RPM can result in equipment damage. (00248a)

REMOVAL

Prepare for Service

1.	Position motorcycle on a suitable lift. NOTE If vehicle is equipped with Harley-Davidson Smart Security System, see owner's manual for instructions to disarm the system.
2.	Remove seat according to the instructions in the service manual.
3.	Remove main fuse. Refer to service manual for your motorcycle.
	WARNING When servicing the fuel system, do not smoke or allow open flame or sparks in the vicinity. Gasoline is extremely flammable and highly explosive, which could result in death or serious injury. (00330a)
4.	Remove fuel tank according to the instructions in the service manual.

Remove Engine Components

Remove existing air cleaner assembly. Refer to AIR CLEANER REMOVAL in service manual.

Remove existing exhaust system. Refer to EXHAUST SYSTEM REMOVAL in service manual.

Disassemble cylinder heads from engine. Refer to appropriate ENGINE sections in service manual.

NOTE

The valve springs in these cylinder head assemblies work with cams with up to 0.585 in. (14.859 mm) lift, and up to 7000 rpm.

It is important to check valve-to-piston clearance as described in the following steps. We recommend that this inspection be performed by a Harley-Davidson dealer.

Valves must be properly adjusted to zero valve lash when claying pistons.

Apply a 1/8 in. (3.2 mm) thick layer of clay to the crowns of both pistons (in the areas where the valves meet the pistons).

Install the new cylinder heads from this kit per the service manual procedures, using the new gaskets from the Top End Overhaul Gasket Kit (purchased separately). Assemble the heads and valve train, and tighten the internal-threaded cylinder screws to the torque specifications listed in the Service Manual.

Turn the engine (by hand) through two complete revolutions.

Remove the heads and measure the clay at its thinnest point.

NOTE

Clay must measure 0.080 in. (2.03 mm) at the thinnest point. If this measurement does not meet the minimum thickness, the depth of the valve notches must be increased; however, the depth of the notches must not exceed 0.135 in. (3.43 mm).

NOTE

The valve springs on the new cylinder heads have an installed spring height of 1.850 in. (46.99 mm), which equals 193.7 lbs (87.86 kg) of seat pressure.

To increase seat pressure, place shims 18224-98 (0.015 in.) or 18225-98 (0.030 in.) under lower spring collars. Each 0.015 in. (0.38 mm) spring height reduction equals 3.8 lbs (1.7 kg) more seat pressure. Shim to the desired seat pressure by placing shims under the lower collar, but maintain a minimum of 0.70 in. (17.78 mm) travel to coil bind.
To decrease seat pressure, machine the surface of the cylinder heads in the area under the lower spring collar. Every 0.015 in. (0.38 mm) increase in spring height equals 3.8 lbs (1.7 kg) less seat pressure. Machine to the desired seat pressure by machining the spring pockets in the cylinder heads, but maintain a minimum of 0.70 in. (17.78 mm) travel to coil bind.

For constant operation at extreme RPMs, all four valve springs should be checked for matched, installed heights.

1	Upper collar
2	Lower collar (with valve guide seal)
3	Installed spring height 1.850 in. (46.99 mm); spring pressure 193.7 lbs (87.86 kg)
4	Free travel should be at least 0.080 in. (2.03 mm) greater than maximum valve lift.

Figure 1. Valve Spring Travel

Change installed valve spring height (seat pressure) as follows:

a. Compress valve springs and remove valve collar retainers, upper collars, springs, and lower collars/valve seals on all four valves.

b. See Figure 1. Use shims or machine cylinder heads as required to obtain desired seat pressure (see notes above). Install lower valve spring collars (without valve guide seals), valve springs, upper collars, and collar keys. Check installed spring height.

c. If spring heights still do not match, repeat Steps 8a and 8b above as necessary to reach the desired installed spring height, again without installing valve guide seals.

d. When all spring heights match, remove valve collar retainers, collars, and springs. Install using new lower collars/valve guide seals 18016-03, purchased separately. Assemble the cylinder head assemblies.

INSTALLATION

Install Engine Components

Transfer Automatic Compression Releases and coolant line coupling fittings from stock heads to heads supplied in kit. Install cylinder heads to engine. Refer to appropriate ENGINE section in service manual.
Install exhaust system. Refer to EXHAUST SYSTEM INSTALLATION in service manual.
Install air cleaner assembly. Refer to AIR CLEANER INSTALLATION in service manual.

Final Assembly

1.	Install fuel tank according to the instructions in the service manual.
2.	Install main fuse. Refer to service manual for your motorcycle.
3.	Install seat according to the instructions in the service manual.
	WARNING After installing seat, pull upward on seat to be sure it is locked in position. While riding, a loose seat can shift causing loss of control, which could result in death or serious injury. (00070b) NOTICE You must recalibrate the ECM when installing this kit. Failure to properly recalibrate the ECM can result in severe engine damage. (00399b)
4.	Download the new ECM calibration using EFI Race Tuner Kit. Refer to Screamin' Eagle Pro Catalog or contact a Harley-Davidson dealer.

Operation

Start and run engine. Repeat several times to verify proper operation. Refer to BREAK-IN RIDING RULES in the owner's manual for instructions to break-in the motorcycle.

SERVICE PARTS

Figure 2. Service Parts: SCREAMIN' EAGLE PRO CNC PORTED OE CYLINDER HEADS

Table 1. Service Parts: SCREAMIN' EAGLE PRO CNC PORTED HEADS

Kit	Item	Description (Quantity)	Part Number
Kit 16500259 Black	1	Cylinder head assembly, front	Not Sold Separately
Kit 16500259 Black	1	Cylinder head assembly, rear	Not Sold Separately
	2	Cylinder head (machined, with Items B, C and D installed)	Not Sold Separately
	3	Collar, valve spring, upper (4) (part of Item A)	Not Sold Separately
	4	Collar and valve guide seal, valve spring, lower (4) (part of Item A)	18016-03
	5	Stud, exhaust port (4)	16715-83
	6	Intake valve (2)	18000001
	7	Exhaust valve (2)	18000002
	8	Retainer, valve collar (8), (part of Item A)	18260-02
	9	Valve spring (4) (available only as part of Item A)	Not Sold Separately
The following items come installed in the cylinder heads, but are also available separately:
	A	Screamin' Eagle Valve Spring Kit	18013-03A
	B	Valve seat, intake	18020-83
	C	Valve seat, exhaust	18011-86
	D	Valve guide, intake and exhaust	16465-06