Jims Twin Cam Timken Case Bearing Conversion Tool 959

If you're building a big-cubic-inch Twin Cam engine, case bearing failure isn't an option. The JIMS Twin Cam Timken Case Bearing Conversion Tool 959 addresses a critical weak point in stock aluminum cases by upgrading your engine's bearing support with precision-engineered materials and alignment tolerances that refuse to compromise. This kit transforms your build from stock durability into a platform capable of handling serious power and cylinder pressure.

The conversion centers on a precision steel bearing insert sleeve that maintains .0002" TIR, ensuring bearing alignment that won't drift over thousands of heat cycles. JIMS engineered the specialized press plate to keep everything perfectly concentric during installation—no guesswork, no runout surprises. The kit includes all necessary drill bits for oil feed and return holes, eliminating the need for separate tooling.

Designed for builders of stock 88" and 96" Twin Cam platforms, this upgrade uses materials significantly stronger than aluminum cases while remaining compatible with your existing engine architecture. Installation requires only basic hand tools, a hand drill, and access to a two-ton press, making this a realistic upgrade for serious builders without access to full machine shop equipment.

• Precision steel insert sleeve
• .0002" TIR alignment tolerance
• Specialized press plate included
• Complete drill bit set
• Fits 88" and 96" Twin Cam
• Two-ton press installation
• Hand tools only required
• MPN: 959