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 Increasing Boost On Turbo Diesel?  

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Brennan
  • Brennan
  • Standard User
  • Member No.: 69,285
  • Joined: 18-May 07
  • Posts: 404
  • From: Noosa
Post #1 post 31st August 2008 - 12:40 PM
hello,

i wanna run my ford courier turbo diesel on about 10 - 12psi boost.
can i just use a standard boost controller an gauge? or is there a special diesel one i need?

also do i have to adjust the diesel pump or if i only go to 10 - 12 should there be enough fuel gettin through for that?

thanks
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slow laser
Post #2

usually u have to change the pump as its not controlled by injectors, u maybe be able to get away with it if its only a small increase in boost.

TTV8
Post #3

is it intercooled?
adding a good cooler will boost power and torque heeps.
(heeps for a diesel anyway).
ya can run about 16psi with a intercooler and fuel pump upgrade, make sure ya get the right one.
mates got a navara d22 running 17 psi, it hauls ass.
Rookie ROX
Post #4

Let's be clear when saying that.

An intercooler itself will not do anything but look pretty.

It WILL however allow you to run higher boost levels safely by reducing the chance of detonation from the cooler charged air.

ROCK ON
R~R

the_random_hero
Post #5

See if you can get it chip and tuned from a reputable workshop. Should give you a heap more power along with bettering your fuel economy.

mongrel_cae71
Post #6

QUOTE(Rookie ROX @ Sep 1 2008, 05:34 PM) [snapback]1282814997[/snapback]

Let's be clear when saying that.

An intercooler itself will not do anything but look pretty.

It WILL however allow you to run higher boost levels safely by reducing the chance of detonation from the cooler charged air.

ROCK ON
R~R

diesel engines can't detonate/pre-ignite, unless the injectors are leaking. the idea is that the compressed air in the cylinder has to be hot enough to ignite the fuel as it is injected into the cylinder. combustion occurs when the fuel is injected thus why injection timing is so important on a diesel, so a intercooler only increases the air density it does not stop detonation
andrew12a
Post #7

theres some articles in 4x4 magazines about making more power from turbo diesels and bettering your fuel economy.
good read.
let me know if you want me to scan one?

Rookie ROX
Post #8

QUOTE(mongrel_cae71 @ Sep 1 2008, 09:24 PM) [snapback]1282816699[/snapback]

diesel engines can't detonate/pre-ignite, unless the injectors are leaking. the idea is that the compressed air in the cylinder has to be hot enough to ignite the fuel as it is injected into the cylinder. combustion occurs when the fuel is injected thus why injection timing is so important on a diesel, so a intercooler only increases the air density it does not stop detonation


I wasn't intending to specify it for a diesel. Although the above certainly won't do any damage for the TS knowledge biggrin.gif

ROCK ON
R~R

Brennan
Post #9

hello,
it is factory intercooled.. small front mounted one.

i no there is alot of things out there to do to a diesel but atm im just looking at the in-expensive short method..

so i was thinking buying a boost gauge an controler, upping the boost to around 12psi an leave it at that for now, further down track look at getin it dyno tuned ect..

mongrel_cae71
Post #10

well it depends on what type of injection it has, full mecanical have a boost pressure compensator on the top of the pump which should allow/be able to run a small increase in pressure. semi electronic(mechanical pump with a electric spill control valve) or full electronic(common rail) may have some sort of overboost protection in the ecu. the later will definatly.
most electronic controlled turbo diesels have their timing set so it doesn't over torque other components in the drive train. in short there is alot of power to be had by trimming the injection timing and quantities.
if it's an older full mechanical pump then wind a bit of boost into it, if it's newer electronic controlled pump then something along the lines of a D-tronic will supply better gains

andrew12a
Post #11

that should be fine as we cranked one the same as yours to 15psi (yes that little turbo made 15psi) and it was sweet. not a huge difference though.

iamhappy46
Post #12

Diesels need to be lean enough to combust or should I say burn the oil lol.

Adding boost pressure to the engine will make it easier to ignite the mixture and produce a small gain in power. Remember that more boost on a diesel will not make as much of a difference as they are designed for low to midrge rpm torque. More boost is suited to higher rpm so your not likely to use it.

An electronic boost controller will bring the turbo on at an earlier rpm so there are gains to be made in that regard and the extra low rpm torque should help with fuel economy.

You could also order an adjustable wastegate actuator and wind in a bit more pre-load on the wastegate which would be cheaper than a boost controller too wink.gif

JD_Stazza_Brendan
Post #13

Have a look on Autospeed.com they have done a few articles on Turbo Diesel cars. Upping the boost and tuning for economy. Might give you some ideas.

clmclean1983101
Post #14

Look at http://www.dieselgasaustralia.com.au/test.aspx much better upgrade

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