Engine choices?

[Kleyny]

what year pajy is this thing anyway??
Some EFI computers are simple.(just do the basics like tell the coils when to fire and when to open the injectors)
Others are not so simple ( tell the timing when to advance, even now when to advance the cam)

A simple cam (with larger lobes and maybe slightly more advanced to bring the torque in a little earlier) and good flowing heads (even just a larger exhaust valves) may not require the simple computer to be remapped or chipped)

An example of this is you have a VP-VR commodore and you put series 1 VN heads (they flow much better) on you get instant extra HP without touching the computer.

Just my thoughts

Neil

[Poodroo]

what year pajy is this thing anyway??
Some EFI computers are simple.(just do the basics like tell the coils when to fire and when to open the injectors)
Others are not so simple ( tell the timing when to advance, even now when to advance the cam)

A simple cam (with larger lobes and maybe slightly more advanced to bring the torque in a little earlier) and good flowing heads (even just a larger exhaust valves) may not require the simple computer to be remapped or chipped)

An example of this is you have a VP-VR commodore and you put series 1 VN heads (they flow much better) on you get instant extra HP without touching the computer.

Just my thoughts

Neil

My Pajero is a 1993 model. Sounds like I will have to ask loads of questions to the future mechanic when that time comes.

Poodroo

[Kleyny]

I'll do some asking myself if you like, a mate works at a mitsubishi dealership so he should know if you can do simple mods like cam and valves without touching the computer.

my guess is you should be able to get away without computer mods. But its only a guess at this stage.

[bastard]

Id just rebuild the standard engine and if youve increased tyre diameter maybe have a look at changing diff gears.

[Fat Chilli]

I say throw a 3.8 ltr V6 in it, I used to have one of the original 6 hilux's built by Toyota, Marks Adaptors and Holden, it came off the assembly line as a diesel chassis and no donk. They installed the 3.8 and ARB used it as a demo car. I bought it 88k km's later and it flew, great torque and good off road (for a hilux). Plus the 3.8's are easy to work on, cheap and readily available.

[BenDover]

Poodroo, is your engine petrol or deisel? thats in it now... (sorry im not up with mitsubishi) And you said your wanting it for towing and torque... If its deisel it makes a BIG difference to how easy it is to upgrade it. Personally if its deisel i would be supercharging it forsure as its not that hard!! If its petrol then maybe upgrade with a few mods. But do not change engines from original for any reasons. Work with what youve got.

I have a GU patrol and did an engine swap from my incredibly slow 4.2TD to a gen 3. And have had sooo many headaches its not funny with computers, map sensors. Computer programs, ignition moduals etc... Because noone in aus has done it before. Its finished now but has taken 5 months and cost $21k so believe me, dont do it hey!
for anyone who's interested my results are 269.3 BHP and 1350 NM of torque Aprox 370 kw at flywheel 4 gear dyno run. And lots of room for improvement as it is still new and tight and running standard airfilter system without a snorkle. and still running 4.1 highway gears

[Poodroo]

I'll do some asking myself if you like, a mate works at a mitsubishi dealership so he should know if you can do simple mods like cam and valves without touching the computer.

my guess is you should be able to get away without computer mods. But its only a guess at this stage.

Great stuff HONKY DORY. I will wait to see what he says.

Regards,

Poodroo

[Poodroo]

Poodroo, is your engine petrol or deisel? thats in it now... (sorry im not up with mitsubishi) And you said your wanting it for towing and torque... If its deisel it makes a BIG difference to how easy it is to upgrade it. Personally if its deisel i would be supercharging it forsure as its not that hard!! If its petrol then maybe upgrade with a few mods. But do not change engines from original for any reasons. Work with what youve got.

I have a GU patrol and did an engine swap from my incredibly slow 4.2TD to a gen 3. And have had sooo many headaches its not funny with computers, map sensors. Computer programs, ignition moduals etc... Because noone in aus has done it before. Its finished now but has taken 5 months and cost $21k so believe me, dont do it hey!
for anyone who's interested my results are 269.3 BHP and 1350 NM of torque Aprox 370 kw at flywheel 4 gear dyno run. And lots of room for improvement as it is still new and tight and running standard airfilter system without a snorkle. and still running 4.1 highway gears

BenDover mine is the 3.0 litre V6 petrol. Just to update you on the available Mitsubishi engines that were made for my model they made the 3.0 litre V6, the 3.5 litre V6 petrol, and the 2.8 litre turbo Diesel. I'd love to have that extra torque because of past experiences. I normaly do a trip to Fraser Island every year and even though the Pajero gets through everything with relative ease there are times when in convoy with others who have later more powerful vehicles they start pulling away from me when I hit the real loose sand and I am flat to the board. I just feel that I have to push the engine too hard at times in those situations so I was thinking that when I need to do the motor up then possibly that is the time to do some modifications to get that extra torque. So far it seems my best option is to keep the original motor but put a better suited cam in it and possibly do the heads up and try for a better flow rate. Will certainly ask the pros when that time comes. Because the engine has now covered 362,000klms I don't think that time will be too far away.

Poodroo

[BenDover]

Yeah get a cam with a longer duration. and exhaut it. But the best for sand is get some fats. Like 12.5s and let them down to 7psi. that what i used to do on fraser. And then glid over the sand.

[Tangles]

Poodroo,

you know you need a V8 diesel to keep up with those Nissans

mike

[Poodroo]

Poodroo,

you know you need a V8 diesel to keep up with those Nissans

mike

Lol Mike. You know it wasn't the Nissans that were leaving me in the loose sand, it was the newer Pajero's, and a new Prado all with bigger engines. Nah I will do the old donk up and see what magic horsepower it ends up with once it is done. Should be very interesting.

Poodroo

[Tangles]

gotta admit on the highway uphill those petrols where leaving the ol diesel for dead, maybe i need the V8

mike

[FNQCairns]

Gee if your flat to the board keeping up with those fella's you should get some new friends with diesel NA 4.2 patrols you will run rings around them, they are so doughy in the sand even the 2.8 petrol MQ's out perform them. Would be cheaper anyway.

cheers fnq

[Tangles]

i hear you FNQ... dirt, sand etc run rings around them,, but on a long uphill highway drag the ol deisel does it tough compared to a petrol ( anyway mine does) ... Deckies petrol flies uphill on the highway but with a corresponding dip in the ol petrol gauge im still wondering if hes purchased that petrol station yet?

cheers
Mike

[Dicko]

The V6 from the dunny door is a fair choice, I put one in my dual cab Triton a couple of years ago. all is still going well. It worked out easier to use the auto from the dunny door as well rather than match the v6 to the existing 5 speed.

In the kit I got off V6 conversions it had a different output shaft to change in the auto & it mated up with the transfer case. The transfer case, tailshafts etc all remain in their original position.

I got a good deal on a rear end damaged complete donor car which made the excercise economical.