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  Project CJ-7
Jeep Project CJ-7

An ongoing Budgeted Rebuild/Build up of a Rock Crawling Machine.

Jeep Central
From Jeep History to Tech Specs and Projects.  This section is all about Jeeps.
Jeep Technical Info
Engine Swaps

Installing 23,000 Volt Offroad Lights

What are HID Lights?

Onboard Air
Converting a York
AC Compressor
to Pump Air

Warn 9500i Winch Installation

HEI Ignition
Installation & Review

Lockers, Limited Slips &
other Differentials Explained

Jeep Dana 300 TeraLow - 4:1 Gearset for the Dana 300 Transfer Case


Smoke rises out of the ground, the smell of sulfur is in the air, the ground collapses as homes are destroyed.
Science fiction?
Think again.


2007 Jeep Wrangler JK
Jeep Wrangler JK Specs

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Hummer H3

Jeep Commander Articles and Reviews

Jeep Grand Cherokee Articles & Reviews

Nissan XTerra Articles and Reviews

Jeep Grand Cherokee Articles & Reviews

Jeep Rubicon Articles and Reviews

Jeep Rubicon Unlimited Articles and Reviews

Suspension Lift Installations and Reviews






and the Hi-lift Jack


CAUTION - Never get under any vehicle that is only supported by a jack.

Hi-lift Jack

By far, the best jack for four wheel drives is the Hi-lift type. It can lift virtually any vehicle and, with the aid of chains, it can be used as a winch.

The standard jack supplied with most four wheel drives can only raise the vehicle sufficiently to change a tire on paved roads or hard packed surfaces when the vehicle is not bogged. They usually rely on placing the jack under the vehicle in special spot on the frame or unibody. If you try using this type when you are bogged to the chassis in sand or mud you'll understand why it's quite inadequate.   The Hi-lift type jack can be used on any suitable part of the vehicle and can lift a larger amount of weight much higher than the standard jacks.

Some vehicles do not have suitable points to use a high lift jack due to the curved nature of their bodies and their bumpers. There are several types of jack adapters available to overcome this limitation. Hi-Lift makes an   adapter that attaches to the lip of the underside if the curved bumpers. An adapter is also made that works well with the ARB Bull Bars.

It is best to have a jack plate around 300mm x 300mm when jacking on sand or mud to stop the jack burying itself. 7 ply plywood or 3.5mm steel is ideal, or if you carry a barbecue plate, this may be suitable. To test your jack plate, place 2 bricks 200mm apart with the jack plate on top, Slowly jack the vehicle while observing the plate. If it survives this without distortion it should be suitable.

A Hi-lift can be used as a jack with the aid of suitable chains. The top of the jack is attached with a chain to a suitable anchor point while another length of chain is attached to the bogged vehicle. On the bottom end of the jack is attached a length of chain with a clevis hook, while on the moving leg of the jack is attached a chain with a clevis claw.

This allows the jack to pull the vehicle approximately one metre and then attach the clevis hook while lowering the jack. The clevis hook stops the vehicle from moving back as the jack leg is lowered, ready to move the vehicle one metre again. This process is repeated until the vehicle is free.

Exhaust Bag Jack

The exhaust powered bag type of jack is very simple and easy to use, provided it can be placed under part of the vehicle. It is quite effective, especially in sand where, if necessary, a small area can be dug away to accommodate it. It requires the vehicles exhaust system to be in good condition as even a small hole will prevent the bag from inflating. It can also cause rusted or weak areas in exhaust systems to blow out.

Be sure when placing the bag under the vehicle that sharp objects are clear from the bag to avoid puncture. Once in position, connect the pipe to the vehicle exhaust and start the engine (in neutral). When the wheel is clear stop the engine and simply fill in the hole or rut with whatever is available or dig away any sand that has built up.


Jacking to recover a vehicle is usually done to get a wheel out of a rut when a vehicle is "hung up", or to fill in wheel holes in dirt and sand. It allows any available material to be placed under the wheels of the bogged vehicle to either provide traction or build up a rut to enable the vehicle to drive out. Furthermore, it can be used to "break suction" in mud when snatching or winching is not working.

Additionally, by jacking up the entire end of a vehicle with the Hi-lift jack, for example on the tongue of the tow package, the vehicle can then be pushed sideways to allow it to be move out of a rut or soft section. This procedure must be performed with no bystanders near the jack in case it springs out.

  • Jack the vehicle in the middle of either end until both wheels are clear of the ground by at least 300mm.

  • Clear everyone from the jack end of the vehicle and position yourself with the vehicle between you and the jack so that it cannot spring out and strike you. Be aware of where the jack may end up and ensure it won't contact any part of the vehicle when it moves.

  • Proceed to push the jacked end until it topples off the jack. This procedure can be repeated at both ends of the vehicle to "walk" it sideways.

This procedure has inherent dangers as the vehicle is very unstable with two wheels off the ground. All bystanders should be well clear of the vehicle and the person operating the jack should be aware that it may "pop out" unexpectedly.



Offroad Tire Info
P-Metric Tire Sizes Conversion to Inches
Tire Terminology
Wheel Terminology
How to Pick the Right
Tires for your Truck
Truck Tire Info
Tire Sizes Clearance Chart
Tires - What Hits What Fits
All Terrain  Mud Terrain
Tire Reviews & Info
Mud Terrain MT Tire Reviews
All Terrain AT Tire Reviews
Super Swamper Bogger
Super Swamper SSR
Super Swamper SX
Super Swamper Vortrac
Interco IROK TSL
Super Swamper LTB
Super Swamper TSL
Super Swamper TSL Radial
Super Swamper Narrow
Interco SS-M16 Swamper
Thornbird TSl Radial
Thornbird TSl Bias
Thornbird TSL
Parnelli Jone Dirt Grip
BFGoodrich Krawler
BFGoodrich MT T/A KM
BFGoodrich MT T/A KM2
BFGoodrich AT TA KO
BFGoodrich Mud King XT
Bridgestone Dueler MT
Cooper Discoverer ST
Cooper Discoverer STT
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Federal Couragia MT
Firestone Destination AT
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General Grabber MT
General Grabber AT2
Green Diamond Icelander
Ground Hawg Mud Tire
Hankook Dynapro MT
Hankook Dynamic MT RT01
Hercules Terra Trac MT
Hercules Trail Digger MT
Kelly-Springfield Safari DTR
Kelly-Springfield Safari MSR
Kumho Road Venture MT
Kumho Road Venture KL71
Kumho Road Venture AT
Dick Cepek Mud Country
Dick Cepek F-C II
Dick Cepek Fun Country II
Dick Cepek Fun Country Nylon
Dick Cepek Fun Country Kevlar
Mastercraft Courser MT
Mastercraft Courser HTR
Mastercraft Courser HTR Plus
Maxxis BigHorn Radial
Maxxis Creepy Crawler
Maxxis Trepador
Maxxis Buckshot Mudder
Maxxis MA-SW
Maxxis M-8080 Mudzilla
Maxxis MT-754 Buckshot
Maxxis MT-753 Bravo
Maxxis MA-751 Bravo
Maxxis MA-S2 Marauder II
Maxxis MA-S1 Marauder
Maxxis MT-762 BigHorn
Nitto Mud Grappler
Nitto Trail Grappler MT
Nitto Terra Grappler
Nitto Dura Grappler
Nitto Dune Grappler
Nokian Vatiiva MT
Pit Bull Rocker Extreme
Pit Bull Maddog
Pit Bull Growler
Goodyear Wrangler MT/R
Pro Comp Xterrain
Pro Comp All Terrain
Pro Comp Mud Terrain
Pro Comp Xtreme AT
Pro Comp Xtreme MT
Toyo Open Country AT
Toyo Open Country MT
TrXus Mud Terrain
TrXus STS All Terrain
Michelin LTX A/T²
Michelin LTX AT2 Press
Michelin LTX AT2
Mickey Thompson MTZ
Mickey Thompson MTX
Mickey Thompson Baja Claw Radial
Mickey Thompson Baja Claw Bias
Mickey Thompson Baja Crusher
Mickey Thompson Baja ATZ Radial SLT
Competition Claw
Dunlop Mud Rover
Federal Couragia M/T
Nitto Dura Grappler
Yokohama Geolandar
Dick Cepek's 2008 F-250 Super Duty Project Vehicle – Project CRUSHER
Mud Tire Reviews

FJ Cruiser

Engine Specs
Drivetrain Specs
Photo Gallery
FJ Cruiser Tires
Press Releases & Specs
FJ Cruiser Reviews

Paragon Adventure Park
Rock Krawl

Thousands more
photos here..»


Off-Road Lights
by LightForce Product Review / Installation.
from Off-Road Lights


Black Diamond Suspension Lift instal

 for CJ-7

Ramp Travel Index
RTI / Ramp Travel Index What it is and how to calculate it, with and without the ramp.

Offroaders Guide to Gearing up for Offroad
From Basic Equipment to Well Equipped.  An extensive list guide to help you prepare your vehicle for the offroad.

Do it Yourself
Detriot EZ Locker Install  in a 92 Toyota 8" rear

For all the Jeep
Fans out there!

Department of Cheap Tricks and Useful Tips
Ultra-Cool Hand Throttle for Free!

Jeep V8 Swap Tips

The Exploding Clutch

Radiator Protection using 6 bucks worth of material

Cracked Under Pressure - Fixing a smashed fingernail

A Cheap, effective alternative to undercoating

Home-built Saginaw Gearbox Brace for the cost of lunch!

Ammo Box Storage - Mounting Them for Quick Disconnect

Home-built Serious Skid-Plate protection for the Oil Pan for under 20 bucks!


Building a Garage?
Need a Garage Plan?
Need a House Plan?

Knoebels Amusement Park