d-man

Yes it is a VNT type turbo and they don't have a "waste gate". The VNT just changes the angle that the exhaust hits the veines of the turbine wheel so it does control boost I guess. If you are upgrading the turbo to this other one you might want to use a waste gate to limit the boost to whatever you want to have it at.

I did see a buick regal turbo with no waste gate. The turbo was designed to run on that car without one and produce max boost of 18psi.

Random Hero

You couldn't be much more wrong with that theory.


Give us a little more info on the motor/turbo that your running. I'm pretty sure a 38mm wastegate with a big set of springs in it would work just fine.

G13BT

I want to turn this 90bhp, 205nm turbodiesel into a 160bhp, 350nm monster, itīs a 2 seater(comercial use) peugeot 206 XS HDI, very light and with an awesome suspension... itīs a proper laugh even stock... but i want more...

With fuel prices rising every second now, diesels are looking hotter and hotter, the next big thing here in europe now...
Diesel carīs represent 80% of the sales, diesel is cheaper than gas and they have better mileage, so everybody is tuning dieselīs nowadays...

Itīs not unusual to see 1.9 diesel engines putting 200bhp+ and 350nm+ on the wheels...

Itīs a 2.0lt turbocharged non intercooled, common rail, pressure mecanical controled wastegate...

The car was already modded when i bought it, engine wise as a k&n filter and been mapped... i guess itīs on 120bhp and 230nm now...

Iīm thinking of a hybrid VNT turbocharger with 2 types of control, since itīs vnt it would have a solenoide in place of the actuator/wastegate to switch manualy via a button between fully open or fully closed vnt blades... and a external wastegate to control max pressure in both "modes"...

Itīs like having 2 turbochargers, with different reactions, but both with same boost pressure...

Thatīs the idea, pretty crazy, huh?

Random Hero

I think there is better options then running a VNT Charger.

Whats the injector pump good for in stock config? Do you need a lift pump or bigger intank? I'd go intercooled before doing much else to it.

Whats the rail pressure run at w/ it chipped?

G13BT

I can get vntīs pretty cheap, and they can withstand 2 bar boost with no problems, in this case it would be from a merc 270cdi...

Since its common rail i donīt know much about it, but i know that stock the fuel at the tip of the injectors is at 1050BAR ...

I know for sure that it has an intank and a mecanical type pump in the engine...

About the chip/map i donīt know much about it since the previous owner said it doesnīt have any, but the car is way to fast and smokes when provoqued... Usually ppl hide this things as it voids warranty an itīs a sign the car has been used hard...

E-b0la

Let me correct myself.

I didn't mean what I said. Of course cooler air is more dense, but what I was getting at is the need for an intercooler isn't there to "safeguard" the engine. They're there purely for performance gains (on a diesel).
Theres a point where the turbo just blows hot air and doesn't produce power. If you were going to run unregulated (no wastegate) you would want some type of turbo that will keep you away from reaching the turbo's limits. In otherwords you wouldn't want to run something really small unregulated.

I was not wrong about preventing detonation. The only detonation is the power stroke. I suppose if injection is advanced too much it could "ping" but not quite in the same sense as with a gas engine.



You're an idiot. You just negated your argument about your intercooler adding power (which I don't doubt). The last thing you said was a different ECU map.

We all know how a tune can affect engine power with a diesel. More fuel, more power, to a point. If you really wanted to test intercooler effectiveness, you would leave the tune alone and change only the fact that an intercooler would be added. The intercooler is supposed to be the variable, and the rest of the vehicle should be the control in the experiment.

G13BT

Ok hereīs the trashing... i was admired it took soo long...

E-bola i simply stated that becusae itīs true, it has a intercooler and diferent map from factory, itīs a fact, should i neglect that fact?

I donīt have a intercooler yet, but i have a diferent map, i estimate i have 10bhp more than the intercooled factory 110bhp car... i know a map wouldd sufice for that gain, but it has a diferent map, maybe the peugeot engineers are just dumb...

But in fact it as a diferent map and an intercooler from factory...

E-b0la

Honestly, I don't know ---- about Peugeot, since there not in the states, other than you could drive one in Need For Speed Underground 2. haha

If you have a more aggressive map, they yeah it's probably making more power. Maybe not as much as if it were intercooled with the same map.

It's hard to say, since all the systems on an engine work together one affects the other ect.. ect.. only a dyno will tell us real numbers.

I say lets see some pics of this little beast.


Are we slipping in the trashing department I'm sure we can fix that

G13BT

No need for trashing... if i wanted to talk dirty i would go to www.shitmouth.com...

I donīt like peugeots either, but their cheap to buy, cheap to mantain and a great day to day car... and they have f.cking nice handling... But iīm a JDM geek... but jdm diesels suck... excluding the awesome honda 2.2liter diesel...




Spec:

-K&n filter, removed ressonator pipe, mapped ecu
-toyo proxes t1-r tyres on OZ ultraleggeras, OZ 15mm spacers
-Koni shocks and eibach springs

jmhalder

USDM gets no diesel love