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Sunday, March 9, 2008

Mitsubishi Pajero 3.2 litre

The Mitsubishi Pajero is a sport utility vehicle manufactured by Mitsubishi Motors. It is known as the Mitsubishi Montero in the Americas and Spain, and as Mitsubishi Shogun in the United Kingdom. In this post I would like to discuss the third generation Shogun/Pajero (1999 - 2006) with 3.2 liters diesel engine.



Pajero is one of few real off-road workhorses, in the market it has competitors like Toyota Land Cruiser, Nissan Patrol and Jeep Grand Cherokee. Pajero can’t compared to the premium brand likes Range Rover or BMW X5, Pajero is though, real workhorse with bullet proof engine.

Pajero brief fact:
- Engine: 3200 cc four-cylinder diesel
- Output: 158 hp at 3800 rpm
- Torque: 275lb ft at 2000 rpm
- Transmission: 5 speed auto
- Fuel consumption: 26 MPG
- Weight: 2155 kg
- Top speed: 106 mph

Engines and Performance
The Pajero 3.2-litre direct injection diesel produce 158 bhp and 275lb ft torque. Although the power is slightly less than its competitor, however the high torque made Pajero is more flexible. The engine bit noisy, especially from the outside. While power is on the low side, the engine delivers tons of torque at under 4000 rpm, good for off-road driving and climbing steep grades. Fitted with Mitshubishi’s new INVECS-II five speed auto transmission, the Pajero has optional fully automatic mode or sequential manual shift. The quality of the automatic change reduces the temptation to use the manual option, although it can come in handy for accelerating hard out of junctions. The manual changes would benefit from being less hesitant.

Ride and Handling
In the asphalt road Pajero is quick and comfortable, body roll appears during cornering. The steering is good, its accuracy and a relative quick rack helping you make correction off road. As the result of fitting a multi link rear axle, Pajero lack of ground clearance. The traction system was rarely problem. The four-wheel drive system is switchable, operating as rear-wheel drive under normal conditions. The Pajero off road capability slightly less than its competitor Toyota Land Cruiser. The Pajero's soft suspension is generally forgiving and smooth on the highway. Road feel is never very lively in 4x4s, but the Pajero's rack-and-pinion steering is a big improvement over the previous model's setup. Road and wind noise make an appearance at moderate highway speeds. Cornering response is predictably ponderous, with pronounced side-to-side roll. Let's just say cornering quickly with the Pajero is not a very good idea. The Pajero features big ventilated disc brakes front and rear, necessary to haul this truck down from highway speeds, and they work adequately well in conjunction with ABS.
On rippled gravel surfaces, the Pajero exhibited little bounce thanks to the Pajero's fully independent suspension. Mitsubishi's compliant springs and shocks soak up most of this motion, producing a very smooth ride during mild offroading. Mitsubishi also does away with the classic body-on-frame construction of most 4WDs and opts for a unit body construction. This generation of the Pajero is the first to be built on a unit body, ditching the older body-on-frame design while also leading to a stronger structure that does not rattle over bumps. On really steep descents and climbs, the Pajero's torquey V6, low-range transfer case and brakes work together superbly, allowing good control when going downhill and providing plenty of torque for climbing back up.

Interior and Driving environment
The cabin is not complicated, is comfortable, robust and roomy. The quality is moderate. Pajero has seven seats. The third row of seats fold out of the floor, a neat system that creates valuable spaces when the seats are not in use. The shogun’s boot is narrow and tall, although with the rear seat folded it’s more usable. Driving position is good, visibility is excellent. The design of centre console is modern, however the fake wood in the dash look ugly. The Pajero dials composition and design is out of date.

Tuesday, March 4, 2008

Lifting the Grand Cherokee to fit 31” tire.

To fit 31” tire in ZJ Jeep required body lift around 1.5” to 2”. There are plenty of suspension lift kits available in the market. Before lifting the jeep, please check the front drive shaft type, if your ZJ equipped with U-joint drive shaft, it is save to lift the body up to 2”, but if the ZJ equipped with CV-joint front drive shaft, please do not lift the body more than 1.5”. To gain 1.5” to 2” body lift, we can use:


Budget Boost / Polyurethane Suspension Lift.
This is the cheapest way to gain 1.5 to 2” lift, just add polyurethane spacer on the top of the coil spring. Usually the spacers sold together with bump stop extension. For this method will cost around 60 dollar up to 150 dollar.

Change the suspension system with taller coil spring.
There are many suspension products are available on the market, one of them is Old Man Emu brand (picture above) manufactured byARB. The Old Man Emu suspensions are not typically noted as a lift kit. They are usually regarded as suspensions systems. However, depending on vehicle weight and application, a lift of 1-1/2" to 2-1/2" can be gained. Many lift kits require a sacrifice of ride quality for off-road performance, but Old Man Emu is able to combine both to give outstanding ride quality with excellent spring articulation. Old Man Emu recommends using 31" tires for best performance. This suspension system will cost around 500 to 700 US dollar.

Combination of the above system.
This is what I did with my ZJ. After installed the OME spring and shock, the 31” tire still rubbing the fender. I suspect that the installation of the new OME spring and shock have not reach 1.5” lift as their claimed. So, I added ¾” polyurethane coil spacer (cost me 59 USD, bought from 4WD store) and the tire just fit, not rub the fender anymore. However, the tire still rubbing the front lower arm in the maximum turn position. To avoid this, we can add a wheel spacer or reduce the maximum wheel turn through an adjustable bold.

The pictures below showing the ZJ jeep with 29" stock tire and with 31" new tire.

So what we got after installing 31” tire?
- Higher ground clearance
- Better look
- Plenty options of tire type (HT, AT, MT, super swamper, etc.)

Notes:
- Don’t forget to re-align the will after installing the lift-kit
- After one year using the OME system in normal road driving condition, I feel the shock absorber going weak, this is much shorter than I expected. In near future I have aplan to change the OME shock with Pro Comp which is much cheaper with almost the same quality.