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Quadratec Knowledge Center

Body Tech

2007 to 2011 Jeep Wrangler JK Unlimited specifications from the manufacturer
History and description of what, and where, a VIN is.
This chart explains what Jeep vehicle has what letter designation.
A handy chart showing the wheel base of most Jeep vehicles.
An FAQ to understanding how POR-15 products can help you.
Simple tips on getting the most out of using POR-15 through the application process.
Information on how much POR-15 to use for a given surface.
A table showing how to read the VIN for your Jeep Vehicle.
A table showing how to read the VIN for your Jeep Vehicle.
A table showing how to read the VIN for your Jeep Vehicle.
A table showing how to read the VIN for your Jeep Vehicle.
Instructions on installing your vinyl decals or stickers.

Off-Road Tech

A simple article discussing how 4wd vehicles are different from other cars on the roads and the safety needed in driving them.
An article about tires and how they function off-road by TeraFlex.
A collection of common off-road related terms as presented by TeraFlex.
An informative article by Rick Russle of Sidekick Offroad of what to carry on the trail.

Driveline Tech

An explanation from Crown Automotive about how Viscous Couplers work.
An instillation of an ARB Air Locker in a Dana Model 30 Axle.
A summary of common types of axles used in vehicles.
How to bleed slave cylinders without an external bleed screw.
A short summery of axle descriptions courtesy of Dynatrac.
The parts of the clutch assembly are broken down and described along with their function.
A chart for showing the needed torque values for differential assembly.
A description of the Auburn Gear ECTED Locker and its function.
A basic detail of the Detroit Automatic Soft Locker
An article explaining the different forms of limited slip differentials
An article explaining how an open axle differential works.
An article explaining drive shaft angles
A summary of drive shaft failures & the related causes.
An explanation of drive shaft harmonics and vibrations.
A simple diagram and explanation of how CV joints work.
An article explaining how to maintenance your drive shafts.
Installation of a RockCrusher heavy duty differential cover. Also a simple how-to on changing differential fluid.
A summary of the automatic transmissions used in various Jeep vehicles.
A quick summary of Wrangler YJ & TJ models Drive line components.
An installation of a Posi-Lok to cure an ailing 4wd shifting problem in may YJ's and XJ's.
Advance Adapters Transmission Identification chart for 1980-1986 Jeep Vehicles.
Advance Adapters Manual Transmission Identification chart for 1987-2006 Jeep Vehicles.
An article on the use of low-range while going off-road by TeraFlex.
A simple chart to allow the identification of axles by their differential covers.
Advance Adapters Transfer Case Identification chart for 1941-1979 Jeep Vehicles.
Advance Adapters summary of the NP200 Series Transfer case widely used in Jeep from 1987-2006.
A chart showing the common drive shaft and axle shaft u-joint sizes.

Engine Tech

What instrument guages are what and why you need them.
A summary of acronyms used in OBD system diagnostics.
A guide to what engine was and is in what Jeep.
A simple overview of a vehicles engine cooling system.
A summary of engine modifications and what they do.
An article showing the benefits of using a K&N Premium Oil Filter.
A listing of OnBoardDiagnostics abbreviations and terms.
A short list of OBDII codes used in Jeep vehicles. <b>OBDII Code Reader Required</b>
A chart showing all OBD I codes for Jeep vehicles.
How horsepower is determined.

Soft Top Tech

An explanation of the terms used in Bestop soft tops.
Color Swatches for Bestop Soft Tops and the years they were used.
An explination of how to clean soft top material.
A summary of how to protect your Bestop Products.
A description of the Supertop hardware for both YJ's and TJ model Wranglers.

Tire & Wheel Tech

An explination of Bump Steer and how to solve it.
A chart showing optimal gear ratios for lifted vehicles with larger tires to obtain the best power ratio.
How to maintain your tires.
A brief summary of how to read the markings on the sidewall of your tire.
A step by step guide to proper mounting of tires and rims for improved ride and handling characteristics.
An article discussing the differences in Radial and Bias-Ply tire construction.
An article reprinted from JRations magazine explaining how wheel spacers work.
Common calculations to help you figure out tire size, ratio, and speed.
A simple chart to see what size tire fits with what size lift.
Tire tips to help maintain tire life and safety by the Rubber Manufacturers Association.
A dissection of a tire provided by the Rubber Manufacturers Association.
A list of terms used when discussing wheels.

Suspension & Steering Tech

Simple allignment terms explained.
Simple article with photos on the installation of an RE Budget Boost kit. Can be used with any 'puck' style lift.
A summary of how different shackles can impact a leaf spring suspension.
A diagram from Teraflex that shows how bumpsteer can be avoided by aligning suspension and steering components.


A diagram showing the various types of fittings used on a vehicle.
Factory specifications for the 2007 Jeep Wrangler Unlimited JK.
Factory Specifications for the 2005 - 2006 Jeep Wrangler TJ
Factory specifications for the 2007 Jeep Wrangler JK
A handy chart to convert metric measurements to standard measurements.
A conversion for sheet metal guage thickness to Inches and MM.
A chart showing the standard torque ratings for common size fasteners

Electrical Tech

Electronic Control Unit Explained by type
An article discussing how to use a multimeter in diagnosis of electrical problems in a Jeep vehicle.
An article explaining the relationship between power, voltage, current and resistance.
An article showing how to diagnose common spark plug conditions and their causes.

Exhaust Tech

Inside mufflers to see how they baffle engine sound.
A summary of what parts make up and exhaust sytem, and why.
The truth about catalytic converters explained by Random Technology.
An article explaining why you need an exhaust and what influences exhaust design.

Brake Tech

A basic summary on the bleeding process of your braking system.

Lighting Tech

When lifting Jeeps the headlights are often over looked so use this simple guide to adjust your headlights aiming pionts.
An article explaining the differences between various forms of highway and off-road lighting.

Interior Tech

Details on the construction of a MasterCraft Racing Seat.

Safety Tech

Issue: Snap Ring failure and premature bushing wear on the TeraFlex FlexArm and JK Track Bar Joints.