SCREAMIN' EAGLE STAGE 2 BIG BORE KITS FOR EFI MODELS
J044572010-12-03
GENERAL
Kit Numbers
27532-08, 27533-08, 27541-08, 27542-08
Models
For model fitment information, see the P&A Retail Catalog or the Parts and Accessories section of www.harley-davidson.com (English only).
These kits are only 49 state street legal and cannot be used in California.
Table 1. Screamin' Eagle Big Bore EFI 1690 Stage 2 Kits
Description (Quantity) | Part Number |
|---|---|
TOURING LEGAL, BLACK, 49 STATE | 27532-08 |
TOURING LEGAL, SILVER, 49 STATE | 27533-08 |
DYNA LEGAL, BLACK, 49 STATE | 27541-08 |
DYNA LEGAL, SILVER, 49 STATE | 27542-08 |
Additional Parts Required
Installation of the camshafts included in this kit requires the separate purchase of spacers from a Harley-Davidson dealer. Refer to the parts catalog for the correct part number for the spacer needed.
Proper installation of this kit requires the separate purchase of two muffler clamps (65296-95A).
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.
NOTICE
You must recalibrate the ECM when installing this kit. Failure to properly recalibrate the ECM can result in severe engine damage. (00399b)
WARNINGRider 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)
WARNINGTo prevent accidental vehicle start-up, which could cause death or serious injury, disconnect battery cables (negative (-) cable first) before proceeding. (00307a)
WARNINGDisconnect negative (-) battery cable first. If positive (+) cable should contact ground with negative (-) cable connected, the resulting sparks can cause a battery explosion, which could result in death or serious injury. (00049a)
WARNINGWhen 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)
INSTALLATION
Installation of this kit is divided into six steps:
- Big Bore Cylinder and Piston Conversion
- High Performance Camshafts
- High Performance Clutch Diaphragm Spring
- High Performance Air Cleaner
- Calibrate the ECM
- Exhaust
NOTE
This Big Bore Stage 2 kit is intended for High Performance applications only. Engine-related performance parts are intended for the experienced rider only.
The air cleaner contained in these kits is designed to perform with these kits only. Any other combination of components is not confirmed to be legal for street use.
Gaskets provided in the 1690 conversion kit eliminate the need for original head gasket O-rings. For this reason, DO NOT install the Original Equipment (OE) O-rings (11273) to the top of cylinder dowels, or severe engine damage may occur.
Big Bore Cylinder and Piston Conversion
NOTE
Installation of this kit requires removal of the cylinder heads, cylinders and pistons. Refer to the service manual for instructions.
High Performance Camshafts
NOTE
Installation of this kit requires removal and re-installation of the cam support plate. Refer to the service manual for instructions.
Measuring Piston-to-Valve Clearance
After installing non-stock cams, check piston-to-valve clearance.
- Apply 1/8-inch (3 mm) layer of clay to crowns of pistons in areas where valves meet pistons.
- Refer to the appropriate service manual and assemble the heads and valve train, and tighten cylinder studs to torque specified.
- Turn engine through two complete revolutions by hand.
- Remove heads and measure clay at its thinnest point.
NOTE
Clay must measure 2.03 mm (0.080 in) at its thinnest point. If this measurement does not meet minimum thickness, depth of valve notches must be increased. The depth of the notches must not exceed 3.43 mm (0.135 in).
Measuring Valve-to-Valve Clearance
NOTE
Wait ten minutes before turning the engine after installing push rods. This allows tappets to bleed down and prevents you from bending push rods or valves.
| 1. | Rotate the engine so that both valves of the front cylinder are partially open. Shine a light through the exhaust port and look through the spark plug hole to view the valves. Turn engine, if required, to the point where the exhaust and intake valve heads cross, where both valves are off their seats by an equal amount. NOTE See Figure 1. If it is necessary after inspection to grind the intake and exhaust valves in order to meet the 1.016 mm (0.040 in) clearance between the two valve heads, the margins (3) must be measured as follows: 0.787 mm (0.031 in) minimum margin on exhaust valves and 0.381 mm (0.015 in) minimum margin on intake valves. | 
Figure 1. Beveling Valve Heads | ||||||
| 2. | A 1.016 mm (0.040 in) clearance is required between the two valve heads. Use a 0.040 inch wire gauge (1) to measure this. To adjust the clearance, grind the edges of the intake and exhaust valves at a 45-degree angle (2). | |||||||
| 3. | Repeat steps 1 and 2 for the rear cylinder. |
Install New Pistons, Cylinders, and Cylinder Heads
- Assembly - Refer to the ENGINE section of the appropriate service manual for installing pistons, cylinders and cylinder heads.
High Performance Clutch Diaphragm Spring
- Disassembly - Refer to the DRIVE section of the appropriate service manual to remove primary chain case, chain, diaphragm spring retainer and diaphragm spring.
- Assembly - Refer to the DRIVE section of the appropriate service manual for installing diaphragm spring retainer, diaphragm spring, chain and primary chain case.
High Performance Air Cleaner
Follow the instructions included with the High Performance air cleaner in this kit for installation.
Calibrate the ECM
Have dealer recalibrate the ECM prior to starting vehicle.
Exhaust
Refer to the appropriate service manual for exhaust installation procedure, if required.
WARNINGConnect positive (+) battery cable first. If positive (+) cable should contact ground with negative (-) cable connected, the resulting sparks can cause a battery explosion, which could result in death or serious injury. (00068a)
- Connect the battery cables, positive (+) cable first.
- Refer to the service manual, and follow instructions to install the seat.
SERVICE PARTS
Figure 2. Service Parts: Screamin' Big-Bore EFI Stage 2 Kit
Table 2. Service Parts: Screamin' Eagle Big Bore EFI Stage 2 Kit
Item | Description (Quantity) | Part Number |
|---|---|---|
1 | O-ring, middle push rod cover (4) | 11132A |
2 | O-ring, lower push rod cover (4) | 11145A |
3 | O-ring, cylinder spigot (2) | 11256 |
4 | O-ring, rocker arm support (2) | 11270 |
5 | O-ring, cylinder deck ring dowel (2) | 11273 |
6 | O-ring, upper push rod cover (4) | 11293 |
7 | Assembly, 1690 cylinder, black (2) Assembly, 1690 cylinder, silver (2) | 16547-99 16548-99 |
8 | Gasket, rocker cover base (2) | 16719-99B |
9 | Kit, head gasket (2) | 16787-99A |
10 | Gasket, rocker cover top (2) | 17386-99A |
11 | Ring set, piston, 1690 standard (2) | 21918-99 |
12 | Circlip, piston pin (4) | 22097-99 |
13 | Piston, 1690 standard (2) | Not Sold Separately |
14 | Pin, piston (2) | 22131-05 |
15 | Breather Assembly | 17025-03A |
16 | Baffle Assembly (2) | 26500002 |
17 | Bolt (4) | 4400 |
18 | Seal, intake manifold (not shown) (2) | 26995-86B |
19 | Stage 1 Air cleaner (not shown) | |
| 29406-08 29260-08 29440-99D | |
20 | Clutch diaphragm spring, high performance (not shown) | 37951-98 |
21 | Loctite 262, red, 0.5 ml tube (not shown) | 94673-99 |
22 | Product information label (not shown) | Not Sold Separately |
Piston Kit (21966-07) includes Items 11 through 14. Breather
Gasket Kit (17025-03A) includes Items 15 through 17. | ||
Figure 3. Service Parts: Screamin' Eagle Big-Bore EFI Stage 2 Kit
Table 3. Service Parts: Screamin' Eagle Big-Bore EFI Stage 2 Kit
Item | Description (Quantity) | Part Number |
|---|---|---|
1 | Cap screw, flanged (crank) | Not Sold Separately |
2 | Cap screw, flanged (cam) | 996 |
3 | Washer (crank) | Not Sold Separately |
4 | Washer (cam) | 6294 |
5 | O-ring, oil pump-to-cam plate | 11286 |
6 | O-ring, cam plate-to-crankcase (2) | 11301 |
7 | Gasket, cam cover | 25244-99A |
8 | Camshaft, front, SE255 | Not Sold Separately |
9 | Camshaft, rear, SE255 | Not Sold Separately |
Cam Drive Sprocket Retention Kit (25566-06) includes Items 1 through 4.
SE 255 Cam Kit (25638-07) includes Item 8 and 9. | ||
Figure 4. Service Parts: Screamin' Big-Bore EFI Stage 2 Kit
Table 4. Service Parts: Screamin' Eagle Big Bore EFI Stage 2 Kit Mufflers
Model | Item | Description (Quantity) | Part Number |
|---|---|---|---|
Touring | 1 | Muffler, RH | 66077-06B |
Muffler, LH | 66012-06B | ||
Dyna | 1 | Muffler (2) | 80610-07 |
Items mentioned in text, but not included in kit: | |||
A | Clamp, muffler (Sold Separately, 2) | 65296-95A | |