Jims Catalogue

TWINCAMCYLINDERS&PISTONSET

JIMS ® TWIN CAM ® CYLINDERS AND PISTON KITS

100" TO 117" CYLINDER AND PISTON KITS These 100" to 117" cylinder kits are designed to be used with original Twin Cam ® Harley-Davidson ® flywheel sets and engine cases. Kits include a pair of JIMS ® black or sil- ver cylinders. The cylinders fit the original O.E.M. cylinder stud bolt pattern. Pistons are a premium flat top forged set with rings using .927” pins with JIMS ® piston jets (if required) per kit size. For more details see No.1551-IS instructions. Order gasket sets separately. See catalog page 26. 120" TO 124" CYLINDER AND PISTON KITS These larger big bore kits are designed to be used with

2

RACE ONLY

JIMS ® Twin Cam ® flywheel assemblies only as listed on catalog page 21. You can also update an earlier JIMS ® Twin Cam ® 113” or 116” stroker kit to a larger cubic inch with these kits. Kits include JIMS ® black or silver cylinders. Cylinders fit O.E.M. cylin- der stud bolt pattern. Pistons are a premium flat top forged set with rings using .927” pins with JIMS ® piston jets. Gasket sets sold separately on page 26. For more details see No.1551-IS instructions. 1. These kits require you to increase the size of the engine case cylinder spigot bores for larger cylinders. To perform this modification use JIMS ® case bore tool No.1408. See catalog page 168. For more details see No.1177-IS instructions. 2. When increasing bore size and stroke, JIMS ® highly recommends that for 2003 to present Twin Cam ® models you con- vert the left crankcase bearing to the more durable H-D ® No. 9028 Timken ® bearing. Use a JIMS ® Timken ® conversion tool No.959. For more

100”*

106”*

110”*

117”**

120”**

124”**

details see No.959-IS instruc- tions and catalog page 133.

ALPHA99-06 ALPHA99-06

ALPHA

ALPHA

USEWITHJIMS USEWITHJIMS

BETA00-06 WITHH-D ® FLYWHEELS

BETA00-06 WITHH-D ® FLYWHEELS

07-PRESENT WITHH-D ® FLYWHEELS

07-PRESENT ALPHAF/WKITS

ALPHAF/WKITS

WITHH-D ®

No.1881OR1882 No.1883OR1884

FLYWHEELS ORBETANo.1886 ORBETANo.1888 ONPAGE21 ONPAGE21

Alpha&BetaBlackCylinderw/PistonSet Alpha&BetaSilverCylinderw/PistonSet Alpha Black Cylinder w/Piston Set Alpha Silver Cylinder w/Piston Set Beta Black Cylinder w/Piston Set Beta Silver Cylinder w/Piston Set CYLINDER SPECIFICATIONS

No. 1501B No. 1501

No. 1519 No. 1520

No. 1521 No. 1522

No. 1523 No. 1524

No. 1525 No. 1526 No. 1548 No. 1549

No. 1527 No. 1528 No. 1550 No. 1551

Stroke

4” 4”

4”

4.375”

4.375” 4.125” 4.915”

4.5”

4.625” 4.125” 5.018”

Bore

4.125” 4.915”

4”

4.125” 5.018”

Cylinder Length

4.915”

5.018”

FORGED PISTON SPECIFICATIONS

Standard Piston Set Part No.’s Standard Piston Set Part No.’s 2 Piston Ring Set Standard No.’s

No. 1603

No. 1614

No. 1615

Alpha No. 1616 Alpha No. 1611

Alpha No. 1617 BetaNo. 1618 No. 1286-1354

BetaNo. 1613

No. 1491

No. 1286-1354

No. 1491 1.1750 10.00:1

No. 1286-1354 No. 1286-1354

Compression Height

1.27

1.27

1.0825

1.1990

1.1250

* CompressionW/StockH-D ® 85ccHead ** CompressionW/S.E. 95ccHead

9.56:1

10.00:1

10.5:1

10.5:1

10.5:1

Oversize +.010 Piston Set Oversize +.010 Piston Set 2 Piston Ring Set O/S +.010

No. 1622

No. 1623

No. 1624

No. 1625

Alpha No. 1626 Alpha No. 1627

NEW

Beta No. 1628

Beta No. 1629 No. 1286-1806

NEW

No. 1493

No. 1286-1806

No. 1493

No. 1286-1806 No. 1286-1806

NOTE: For oversize pistons for above kits contact JIMS sales dept .

NOTE: Please allow 4 weeks for oversize pistons.

NOTE: See page 29 for piston weights.

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