Thread: Turbo Charts And Best Turbos For Your Needs

what do u think i could possibly pull off at 18psi with race fuel and 93 oct and a nice set of slicks or D/R's

What about something like this, but without using ball bearing turbos... I mean, not everyone has $1000-$1200 to spend on a turbo.

444 cc @ 4 bar = 345 WHP

I would not go past 15 PSI with your turbo as you might blow up the motor. You will start to run lean.

while we are asking about setups, like i said i have made 270bhp @8.5psi reving to 6200rpm, i havent moved my boost pressures yet as i am awaiting for it to warm up so i can have the aem boost solenoid installed along with a few other things and then retune the car on the dyno again, but what would you estimate my setup would make at around 18.5psi, i plan on retuning the car to 14psi solid, and turning up the boost to 18 so see what it does...i dont feel the turbo is very efficent at 8.5psi altho it did make really good power but my setup is the following.

sr20det highport
ARP headstuds
Cometic 1.5mm Headgasket
Wiseco 86.5 pistons
Eagle Rods
5 angle valve job
Headwork

AEM EMS
MSD 72lb injectors
Walbro 255lph
JGY hi flo fuel rail
Nismo Automatic fuel pressure regulator
HKS 264in 264ex
Greddy Rocker Stoppers
Spearco Intercooler 30x11x3
2.5in intercooler piping
GT2871R 60 trim .86AR
Tial 38mm Wastegate
Custom Log Manifold
Custom 3'' downpipe
Custom 3'' side exit
JGY 8.8lb flywheel
Clutchmasters fx400 clutch
Unorthadox Pulley Kit

Last I looked there was no 60trim 2871r on garretts site.

But on a 240sx we made 390hp on a 3076r/tubular mani at 18psi on 91oct.

So if i had to say, 18psi with given mods and FWD 365+/-5->10hp with a good tuner. On race gas 20psi ~400hp. Ignition timing makes all the power, fuel makes for good drivability.

sorry i meant meant to put a/r in front of the .60....running the 76 trim

i definitly think there are other things for sourcing out the whp out of the motor other than upping the boost like:

larger throttle body
o2 manifold
boost charge cooling such as nitrous either direct charge cooling or intercooler cooler or both.
adjustable cam gears
retune it for c16 gas
other form of direct injection cooling andh ave it retuned for it.

i think those options would put my setup at a greater advantage then upping the boost pressures giving it greater results . at least i think so

With the list above and a DP turbo we are making 360 WHP and 330 Ft Lb Torque at 17 PSI. This is with a JWT ECU. We will be raising the boost to 20 PSI in a few weeks and will re dyno. We should make 385-390 WHP at 20 PSI.


With some of the bigger turbos like the GT3076R and GT3071R you should be able to get to 440 WHP and 380 Ft Lb torque by 20 PSI with a FWD SER.

I am right there with you. It is pointless to have a huge turbo if you can reach the same power goals with a smaller turbo. Factoring in spooling time and power delivery is crucial to how a car, especially one with a 2.0 liter motor, feels on the street and on the track. You would be amazed, or you probably already know, about how many people don't get this.

^ i totally agree, it all has to do with getting all the parts to work sync with eachother. people dont get or understand that when it comes to turbos, they want the biggest turbo, not knowing how badly that will effect everything from working properly

The stock det pistons & rods will hold up to 450whp no problem.With C16 tho.
I went from a t25 to t28 to 3071r to 4094......