This section deals with the nitty gritty details of Jeep tech related topics like Jeep models, engines and drivetrains. You could find details of a particular model year Jeep or specifications of a Jeep’s transfer case. Even information on Jeep engine swaps and axles. You won’t find reviews or projects here, for that check out the Projects and Installs page.
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Jeep Vehicles Tech
Here you find all kinds of technical information and how-to articles about Jeep vehicles. Special models, new models and some old ones so much to read here.
Jeep Production Numbers 1987 to 2006
The following guide lists production numbers of Jeep vehicles produced by year. See the Jeep Spotters Guide for help identifying your Jeep. Wrangler YJ 1987 unknown 1988 unknown 1989 unknown 1990 …
Tap and Drill Bit Size Chart
Tap and Drill Bit Size Chart The charts below show you what size drill bit to use with a tap. Tap sizes are shown as hole size – threads per inch. Example 1/4-20 = 1/4″ hole, 20 threads …
4xe in Winter – Getting the Oil Hot Enough
If you live somewhere cold it’s only a matter of time until your Jeep enters FORM and getting it out to go back to normal operation hybrid/electric operation is usually a matter of getting the …
YJ Frame Dimensions
Have a YJ and need some frame measurements to fabricate or correct something? Check out the specifications below.
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Identifying Jeep Vehicles
Trying to identify your Jeep or one you are looking to buy? Maybe you just want to become an expert at identifying Jeeps?
CJ Renegade Spotters Guide
A guide to identifying CJ Renegade Jeeps Jeep started the Renegade option in 1970 on the CJ-5 model and continued it all the way to the end of the CJ series in 1986. Renegade models offered special …
Spotters Guide to the 72-75 AMC CJ-5
Identifying a Jeep – An In-depth Spotters Guide to the 72-75 AMC CJ-5. When AMC acquired the Kaiser Jeep Corp in 1971 they made many changes to the Jeep line starting in 1972. Identifying a …
Jeep Vehicles VIN Reference Guide
Decoding Jeep VIN Numbers The Vehicle Identification Number, or VIN is important for many reasons. Most of these reasons have nothing to do with us owners. But to a serious Jeeper the knowledge of …
Jeep Spotters Guide
Below is a chart giving information on various commonly found Jeep vehicles including model years, names, tech info, etc…If you find any discrepancies in this chart or have any thing to add click here …
Jeep Engines Tech
We all are chasing engine technical information from time to time. From error codes to oil capacity.
Carter BBD Carburetor Alternatives
Options for ditching this problematic carb. In the last few years of the CJ series and the first few years of the Wrangler YJ Jeep outfitted the 4.2L (258) 6 cylinders with an electronic carburetor …
Jeep Wrangler Pentastar 3.6L Oil Change
The jeepfan.com 2012 Wrangler Rubicon hit 3588 miles and the Change Oil indicator started showing on the instrument cluster after every startup. Time for the first oil change..
Jeep V8 Conversions
This years old article about Jeep V8 conversions that keeps giving. Really this is a common conversion, one we have done several times. It is tough to put an exact price on, or what all you need. …
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Jeep Tires Tech
Tires are such a common upgrade to our Jeeps, making the right choice can be a challenge.
How to Pick the Right Tires for your Truck
This is an excellent article written by Jeff Jackson about selecting the correct tires for your vehicle.
Checking Tire Pressure – Determine Correct Pressure
How to figure the correct tire pressure for larger tires. This article was spawned from a continuing conversation from our Jeeping friend Bob in his quest to get his JK handling correctly. If your …
Determining the Tire Contact Patch
You buy new (and larger) tires and possibly wheels for your Jeep and you wonder what’s the proper pressure. It’s often different than the stock tires since the larger tires are …
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Jeep Wheels Tech
Along with tires, wheels are a common upgrade to a Jeep. There’s so much more than just picking a style you like. Making sure they fit correctly is an important factor in choosing wheels.
What Jeep Wheels Fit?
Often we get questions on what tires fit on what kinds of Jeeps with this or that lift, etc. In addition we get many questions asking on what jeep wheels fit on this particular Jeep or that. The Jeep …
Wheel Terminology
WHEEL TERMINOLOGY Offset: The distance from the centerline of the wheel to the face of the mounting surface of the wheel that contacts the hub. Negative offset: Indicates the mounting pad is behind …
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Jeep Suspension Tech
Lift kits and suspension mods are maybe second to tires and wheels. We discuss all kinds of options and how to pick the correct lift for your Jeep.
Jeep Wrangler JK Alignment
After the installation of a lift on a Jeep an alignment will make sure the Jeep tracks correctly down the road and prevent premature tire wear. Unlike a typical car the Jeep Wrangler continues the …
What Tires Fit?
We put together a little reference guide for those of you wondering what size tires will fit under your Jeep. These are general guidelines, your vehicle may be different. We are only going to cover …
Jeep Spring Lift vs. Spacer Lift: Benefits, Differences, and Costs
When it comes to lifting a Jeep Wrangler TJ, JK, JT or JL, two of the most common approaches are spring lifts and spacer lifts. Both raise the ride height, but they do so in very different ways, and …
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Jeep Bumpers, Exterior and Armor Tech
Protecting Your Jeep’s Underside – The Suspension, Steering, and Exhaust
Some components under your Jeep are vulnerable and are often overlooked. The suspension, steering, and exhaust system are key components that your Jeep needs to have protected.
Protecting Your Jeep’s Underside – Driveline and Engine
The driveline of a Jeep is typically the lowest points and will generally take the most abuse. Protecting these vulnerable parts will ensure your Jeep of making it off the trail in one piece and help …
Jeep Wrangler JK Front Bumper Guide Part 2
Part 2: Since the JK introduction in the 2007 model year many many different manufacturers have designed bumpers in all shapes and sizes. Some are classy, some bulky and ugly. Many have winch …
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Jeep Chassis and Body Tech
CJ Restoration Steel vs. Fiberglass Jeep Bodies
Steel vs. Fiberglass Jeep Bodies: Pros, Cons, and Considerations At some point, most Jeep owners, especially those working on older CJ restorations, end up facing the same decision: steel or …
YJ Frame Dimensions
Have a YJ and need some frame measurements to fabricate or correct something? Check out the specifications below.
Fixing JK Wrangler Door Water Streaks
Anyone who has a JK Wrangler should be familiar with the streaks that come after washing or a good rain. The water seems to collect behind the mirrors and slowly drain out down the door leaving behind …
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Jeep Electrical Tech
How to Tune a CB Radio with a Workman SWR Meter
Using Simple Tools for Better Communication. Whether you’re driving a Jeep down a dusty trail or communicating with your Jeep convoy, a CB radio is still a solid tool in the toolbox. But even the best …
CB radios and The Ground Plane
I suffered with CB radios in my Jeep. No matter what CB or antenna I used I suffered with poor performance. Noise, inability to hear, and even engine electrically problems. My Jeep would literally …
Lighting the Trail: Jeep CJ an TJ Headlight Options
The factory headlights on a Jeep CJ and TJ do one thing reasonably well—they turn on. Beyond that, performance is often lackluster, especially if you’re driving at night on country roads or …
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Jeep Gear Tech
GoPro Hero Cameras – Capture the Moment
Nothing is more enjoyable tackling some challenging trails and having your vehicle (and you) surviving to tell about it. Even better, capture the moment on video to relive the experience and prove it …
CB Antenna Selection and Mounting Considerations
CB Antenna Selection and Mounting Considerations by Right Channel Radios, article reprinted with permission. There are a large number of CB antennas on the market and it can be a daunting task …
Selecting the Best CB Radio
Selecting the Best CB Radio by Right Channel Radios, article reprinted with permission. The most important thing to understand when choosing a radio is that all CBs, regardless of their price, are …
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Jeep Driveline Tech
Driveline Angles – Part 2
CHECKING DRIVESHAFT ANGLES IN THE VERTICAL OR HORIZONTAL PLANE WARNING: Rotating shafts can be dangerous. You can snag clothes, skin, hair, hands, etc. This can cause serious injury or death. Do not …
Transfer Case Upgrades, Modifications, and Options
We get a lot of email from fellow Jeepers wanting to know what the options are for killer transfer cases. Some are looking for strength while others are looking for low gears. In this article we …
Jeep NV241OR Swap – Replacing a NP231 Transfer Case
The Jeep NP231 transfer case, used in everything from YJs to TJs and XJs is a lightweight, reliable part of the 4WD puzzle. But when you start throwing serious tires, lockers, and steep trails at your …
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Jeep Driving Tech
Air Down Basics
Anyone who has been off-roading more than a few times understands the reasons to “air-down”. If you don’t know why then read on. Airing Down allows your vehicle’s tires to …
The Art of Trail Spotting
No matter how skilled of an offroader you are a good spotter can make a difficult section of trail safer and more fun. Many causes of broken parts and body damage is the due to the lack of …
4xe in Winter – Getting the Oil Hot Enough
If you live somewhere cold it’s only a matter of time until your Jeep enters FORM and getting it out to go back to normal operation hybrid/electric operation is usually a matter of getting the …
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Jeep Garage and Tools Tech
On the Trail Tire Repair
If you visit the Rubber Manufacturers Association’s website, it will inform you that the only way to safely repair a tire is with a plug-patch combination. If you talk with fellow Jeep owners, …
Removing Seized Nuts and Bolts
This article attempts to allow you to arm yourself with knowledge about removing stubborn fasteners. The items are listed from what we believe is a first to last resort. Happy wrenching, or in this …
What is ISO? – International Organization for Standardization
What is ISO? – International Organization for Standardization The International Organization for Standardization (ISO) is an international standard-setting body composed of representatives from …
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Pot Luck
Here’s a random pick of all the articles that deal with Jeep tech.
Jeep Wrangler JK 4 Door 2 Year Review
As of February 2009 the jeepfan.com JK Wrangler is 2 years old. 28,000 miles, 2 PA State Inspections, 3 sets of tires, and 2 lifts it’s still just as fun to drive as the day it rolled off the …
Unichip Performance Module & Airaid Cold Air Intake Dyno Test – Part 2
Together with OK Auto we put two JK Wrangler Unlimiteds on the dyno at G&S Autoworks in Oxford, NJ to test the results of the performance products we were installing. The products involved int the …
2017 Jeep Compass
PRESS RELEASE: All New 2017 Jeep Compass Auburn Hills, Mich. Nov 17, 2016 – The all-new 2017 Jeep Compass expands the brand’s global reach with an unmatched combination of attributes that …