Jims Catalogue

TWIN CAM ® STROKERS

ALPHA TWIN CAM STROKER KITS

JIMS ® RECOMMENDS:

JIMS ® Engine Gasket Kit JIMS ® Compression Releases Performance Heads Performance Induction System Performance Exhaust Performance Ignition JIMS ® Oiling Jets (Supplied)

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Performance Cam JIMS ® Rocker Arms

JIMS ® Adjustable Pushrods JIMS ® Performance Tappets JIMS ® EFI Spacer Kit JIMS ® Case Boring Tool

RACE ONLY

113” TWIN CAM ® FXD, FL, STROKER KITS W/VHR ™ *

PART NO. No. 1943 No. 1944 No. 1937 No. 1938 PART NO. No. 1945 No. 1946 No. 1941 No. 1942

APPLICATION

STROKE BORE 4 1/2” 4” STD 4 1/2” 4” STD 4 1/2” 4” STD 4 1/2” 4” STD STROKE BORE 4 5/8” 4” STD 4 5/8” 4” STD 4 5/8” 4” STD 4 5/8” 4” STD

FLYWHEEL DIA. COMPRESSION RATIO CYLINDER FINISH

Use on Alpha 2006-present FXD or Alpha 2007-present FL Use on Alpha 1999-05 FXD

8 1/4” 8 1/4” 8 1/4” 8 1/4”

9.94:1(Stock Heads)** Wrinkle Black

9.94:1(Stock Heads)** Silver

9.94:1(Stock Heads)** Wrinkle Black

or Alpha 1999-06 FL

9.94:1(Stock Heads)** Silver

116” TWIN CAM ® FXD, FL, STROKER KITS W/VHR ™ *

APPLICATION

FLYWHEEL DIA. COMPRESSION RATIO CYLINDER FINISH

Use on Alpha 2006-present FXD or Alpha 2007-present FL Use on Alpha 1999-05 FXD

8 1/4” 8 1/4” 8 1/4” 8 1/4”

10.19:1(Stock Heads)** Wrinkle Black

10.19:1(Stock Heads)** Silver

10.19:1(Stock Heads)** Wrinkle Black

or Alpha 1999-06 FL

10.19:1(Stock Heads)** Silver

3. For proper installation of JIMS stroker kits on 2003 and later cases, JIMS ® strongly recommends you convert the left crankshaft bearing to the H-D ® 9028 Timken. Use JIMS ® No.959 Timken Conversion Kit to perform this operation. **2. Compression ratio based on 85.9cc head with .040” head gasket and 9.5cc piston dish at zero deck height. Case machining required for 4” cylinders. JIMS ® now offers both early and late Twin Cam ® 116” and 113” flywheel sets. These Alpha flywheel assemblies were designed to be installed in a stock engine case by boring the cases to accommodate 4” bore cylinders. Use a JIMS ® case bore tool to perform the bore modification to your case. See catalog pages 168. JIMS ® has joined performance and reliability together with the development of the Twin Cam ® Stroker assemblies. JIMS ® 3-piece Twin Cam ® flywheel assemblies feature an integral pinion shaft and sprocket shaft for maximum stability and resistance to flywheel distortion. Each kit ships pre-balanced and is assembled with a press-fit, OEM proven crank pin is combined with the JIMS ® bullet proof H-beam 4140 forged machined connecting rods. Flywheel assemblies, use forged blanks instead of conventional billet material for improved strength. JIMS ® cylinders are manufactured from aerospace quality cast aluminum and steel. Now with VHR™ (Vertical Horizontal Ribbing) technology, cylinder casting to cylinder sleeve adhesion is effectively and uniformly locked throughout the entire cylinder casting. This VHR™ technology, combined with proprietary cylinder body geometry, equalizes the cylinder top to bottom (for optimum cylinder concentricity) when placed under torque load. Stroker cylinders are enhanced with eleven equally spaced fins improving the total fin pack surface area by 25%. Cylinders seamlessly blends into existing OEM components. From the precise base surface and fin pack alignments, exact OEM finish and hidden cast seams, JIMS ® cylinders are designed to increase the durability and longevity of your performance engine. Kits come with a compete set of JIMS ® premium dished forged pistons, and a pair of piston oiling jets and complete instructions to install this stroker kit. For more details see No.1932-IS instructions. 1.Must order 113” or 116” gasket sets and EFI spacer kit separately. See page 26. NOTES:

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SEE JIMSUSA.COM FOR DETAILED INSTRUCTIONS