

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. Review: Great info on 4.0 - Seems like a great guide.. Review: All of it - Very good read for new owners











| Best Sellers Rank | #1,195,691 in Books ( See Top 100 in Books ) #176 in Automotive Engine Mechanics #8,196 in How-to & Home Improvements |
| Customer Reviews | 4.5 out of 5 stars 366 Reviews |
D**N
Great info on 4.0
Seems like a great guide..
R**S
All of it
Very good read for new owners
C**N
Good info for the 4.0 l.
Great book for regular rebuilding, but if you're wanting to do a stroker, there's not enough information. It only covers the internal parts.
I**N
Great pictures, good info.
I used this book as an aid to replacing a head vs an entire overhaul, so can't talk about all of content. However, the parts I needed were clearly illustrated and very useful. Very high quality color photos and slick paper. Nothing like a Chilton's or Haynes in that respect. There was a section on strokers that I was hoping for a little more detail on... but understandable it was only high level I guess, the book's focus in the breaking down, refurbishing, and reassembly of the 4.0. Not a hot rodding book.
L**S
This is the review
Excellent transaction!! Great product exactly as described!!! Super speedy shipping!!
N**N
Extremely detailed!
This book is awesome if you plan to rebuild your 4.0. It is extremely detailed and has everything from piston ring gap specs to ring orientation, all the way down to how to use plastigauge. It has just about every single torque spec on the engine, and even detailed instructions on how to install the engine into your vehicle. Not to mention probably over 80 sources that the book is derived from, so it seems to be a trustworthy source. If you're building a 4.0, this will help drastically
A**R
Less than remarkable
This book is a good starting point but not much more than that. All the info is available online for free already. I was expecting something more in-depth but this is basically a 4.0 for dummies book. But if that's what you need you won't be disapointed.
A**Z
Very well written and easy to follow
This book has been amazing in the building of my offroad toy. Plan to get others in the series and would absolutely suggest if you want to learn.
S**S
Save pounds and DIY!
Very informative and enlightening read. Lots of useful shortcuts and accurate information, given by specialists. Making it possible for any competent and mechanical minded individual to rebuild and improve upon the Jeep 4 litre straight 6.
B**R
Very good quality book
Very good quality book for some one looking to rebuild a jeep 258 or 244 (The 258 block is the same and most of the parts are different sizes but the same, but the 4.2L or 258 is carborated and the 4.0 or 244 is fuel injected)
L**I
per appassionati
libro specialistico, ovviamente per appassionati Ottima lettura per gli amanti di questo motore a 6 cilindri
T**I
Molt รบtil
Llibre tal i com es descriu
M**C
Thank you !
Thank you !
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2 months ago
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