Increased Boost Psi

[kingman]

One of these DMAX past me on the Highway and I was at full 10lbs couldnt even get close to his tail gate..wooow those DMAX are FASTTTT!!!!

[geeves]

the 2.8 is good but will never come close to a common rail engine mainly because of the far higher fuel pressure giveing better atomisation of the fuel and the total computer control of everything.
I wonder if its possible to adapt a common rail onto a 2.8

[mulover]

Jellis, you don't need to have an intercooler, but an intercooler will give you more power again.

Kingman, I'm not sure, someone will probably know the figures, but i seriously doubt it. The 4JB1 motor is 20 or more years old, and is still a good motor, but the new 3 litre should blow it away.

[dasnoboarder]

I bet you could beat a Dmax with an old Isuzu. It just depends how much money you're willing to spend on it. Would probably still add up to less than the cost of the Dmax. Turbo work, intake, intercooler & exhaust, lpg injection, fuel system tweaks. I reckon someone needs to do a full investigation - top gear style.

[geeves]

It would be a bit like tuning a vintage sports car engine. It can be done and large horsepower is possible but it wont be as efficient. The Dmax engine gets this horsepower and complies with efficiency and pollution laws that were never dreamed of or even possible with the old engine in standard trim.
Only chance would be to common rail it and lpg. Any automotive engineers here with too much spare time????

[BUSHPIG]

what id do is just sorce a late model common rail engine and fit it to your truck. it would probly end up cheeper than tuneing the old engine. some late model common rail engine's putting out round the 200kw at the fly wheel.
Ive got a m8 with a 1990 terrano thats got a engine outta a 2007 nissan terrano or something. he got a whole crashed 07 nissan complet for like $4000. he said the worst bit of the swap was he wireing side of things. and it goes like F*&k the old truck way lighter than the new model stuff with all the un-need bull shit.

[geeves]

That would be a nice combination. The early terrano had a far better suspension. Only need to watch the rusty seat belt mounts and if its the 3 liter engine clean the throttle body regularly. If you dont the computer looses track and cooks the engine

[BUSHPIG]

haha yeh ive already fixd the rusty rear seat belt mounts. found a mint doner terrano to take a cut from. they all seam to get the rust issue

[mulover]

Its nissan, would you expect anything less??????

[BUSHPIG]

hey hey easy now. i own a s13 silvia (altho i have had to change the roof skin lol)

[geeves]

I did hear rumours that the 3 liter nissan motor is actualy manufactured by Isuzu Its not an isuzu engine though

[BUSHPIG]

yeh id say thatd be right. everything is made in the same place these days, and i dont think i need to tell ya were.hahaha

[Isuzumu]

Has anyone getting 16lbs of boost by just using a boost controller? Not doing anymore expect exhaust....I can not get anymore than 14.5lbs out of mine....I have had the injector pump adjusted, no matter how much I open the controller up I can not get any more boost.
So anyway I believe that my 3.1 is quick than a D.Max my power is around 125Kw and 400NMs at the fly wheel. I have driven a Ford Ranger and there power is 115/380 and I have more power than them.
I think you could possibe get around those figures from a 2.8 but you will need an intercooler and a water to air one which I use, but make sure you have a EGT guage cause when you open up the pump and for some reason loose boost the temp will sky rocket.

[geeves]

Theres a overboost valve on the inlet manifold This is preset around 15ish psi and cant be adjusted. You would need to blank this off to go higher. Also where you take the measurement from makes a difference. In normal trim I also get 14.5 measured via a t on the intercooler to fuel pump line but if I disconnect the line to the fuel pump and plug the gauge straight into the intercooler I get 17. Even useing a t piece without a restrictor gives a higher reading but the needle rattles at idle

[Isuzumu]

I have it plumber in between the turbo and wastegate and was told it was pretty correct when I had it on the dyno last time. I will check out this overboost valve, thanks

Cheers Bruce

[jellis]

would there be much benifit in winding the boost up to 15 psi with standard exhaust?
could some one please post a pic of where they put there boost controller in. also how much did people pay for there pyro gauges

[mulover]

Isuzumu, I think the best place to plumb in the guage is as far away from the turbo as possible, I have mine plumbed in on the inlet manifold. Some gauges do rattle at idle, some don't.

Jellis, you need to put it in the small rubber line that goes from the outlet of the turbo to the waste gate.

[jellis]

CHEERS MATE

[kingman]

From what the guys have mentioned w]increasing boost without addiing the extra diesel via turning up the fuel to match..one will see little gains...

The increase in exhaust is done along with the increase boost and fuel to rid the engine of the additional heat buildup...to ensure the engine head does'nt get cracked or damaged.... I believe the exhaust Mods would be paramount.....

You guys can correct me...I will take some pics of my setup for you

[geeves]

Ive heard similar figures but your efficiency goes out the window Expect to use more fuel. Also dont expect the engine to last as long as it would have esspecialy if you use that power all the time. We can document several engines at 450000km without work.I think the record was 463k before a water hose failure cooked the engine. We have heard of this engine in trucks and non turbo clearing the million km so halving this might not be a major concern.