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Jeep 4.0 Engines: How to Rebuild and Modify

by Shepard Larry

A detailed workshop guide to rebuilding the Jeep 4.0

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AlbakiReads Editorial

A detailed workshop guide to rebuilding the Jeep 4.0

Larry Shepard’s guide follows the Jeep 4.0-liter inline-six through the major stages of an engine rebuild, from disassembly and inspection to machining and reassembly. Its coverage includes the block, cylinder heads, rotating assembly, intake, and exhaust, with step-by-step photographs and captions; the source notes that the photos are black and white. Alongside standard rebuilding, the book addresses performance modifications, including installation of a stroker package to increase displacement. The practical emphasis is on the engine itself: its components, the processes involved in rebuilding them, and options for modifying the finished build.

Good fit for readers who enjoy

  • Jeep 4.0 owners planning an engine rebuild
  • At-home mechanics interested in engine inspection, machining, and assembly
  • Off-road drivers exploring performance modifications such as a stroker build

Themes

Engine rebuildingInspection and machiningJeep 4.0 performance modificationsStroker-package installation

Based on publisher information and book metadata.

Book overview

The photos in this book are black and white.

The venerable Jeep 4.0L in-line 6 engine has powered millions of Jeeps, including CJs, Wranglers, Cherokees, and Wagoneers. The 4.0 delivers adequate horsepower from the factory, but many off-road drivers want more horsepower and torque to conquer challenging terrain, which means these engines are often built and modified. The Jeep 4.0, or 242-ci, is affordable, abundant, exceptionally durable, and many consider it one of the best 4x4 off-road engines.

In this Workbench title, veteran author and Chrysler/Jeep engine expert Larry Shepard covers the rebuild of an entire engine in exceptional detail. He also delves into popular high-performance modifications and build-ups. Step-by-step photos and captions cover each crucial step of the engine disassembly. He shows the inspection of all critical parts, including block, heads, rotating assembly, intake, and exhaust. Critical machining processes are covered, including decking the block, line boring, and overboring the block. The book provides exceptional detail during the step-by-step assembly so your engine is strong and reliable. Installing a larger-displacement rotating assembly (or stroker package) is one of the most cost-effective ways to increase performance, and the author covers a stroker package installation in detail.

With millions of Jeep 4.0 engines in the marketplace (which are subjected to extreme use), many of these engines require a rebuild. In addition, many owners want to extract more torque and horsepower from their 4.0 engines so these engine are also modified. Until now, there has not been a complete and authoritative guide that covers the engine rebuild and build-up process from beginning to end. Jeep 4.0 Engines is the essential guide for an at-home mechanic to perform a professional-caliber rebuild or a high-performance build-up.

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Customer reviews

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Malaika Taylor

I highly recommend to for anyone looking for inner clarity

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Great service and fast service

Great shopping experience! The book arrived quickly, was well packaged, and matched the description perfectly. I would definitely shop with you again

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Olivia

Smooth.