General Question - Horsepower Limit

[polverari]

Hello everybody!
Thais os my first thread here and first of all: sorry if i am posting it in the wrong place... I can move the post if someone warn me.
I'm from brazil and this is the specs of my 2g:

4g63t stroker (2.3, wiseco forged pistons and original rods)
Turbo: forced performance 68hta @1.0bar
Walbro 255
Injectors: precision 1200
Dsmlink v3
Wideband aem
Air filter k&n
All the way of pressurizing in 3" stainless steel

My doubt is:

I'm Running with 1bar (14.5 psi) of turbo pressure.
This is my only car and i use it everyday!
I have original rods!!!
I'm Running with 34lbs of airflow (340hp in engine... i guess)
I'm near the limit of my specs or can i improve the engine horsepower safely? Maybe i can go to 22psi (1.5bar) and extract more horses.
What is your opinion?

Thanks! Ans sorry for eventual english mistakes =)

(The car youtube channel is: youtube.com/eclipsegst)

 

[DJRace]

You can go to about 300 with stock internals. The transmission will start to fail then. Your set up will support up to 500 so you have a lot of room to "turn it up" once you're comfortable with its reliability. If you're worried about forged pistons on the oem rods you could look into magnus aluminum rods for absorbing the shock of the harder metal components. It's good to hear from the south!

 

[red_devil]

Stock internals can handle a lot more that 300hp. I'd be a bit concerned running a stroker on stock rods. Is this a 6 or 7 bolt? The added stress from the change in rod ratio will limit you since the stock rods are a weak point.

 

[bastarddsm]

With stock rods and a stroker. I don't think I would turn it up much being your daily driver. Maybe a couple psi, but I think 400is a good limit.

 

[polverari]

Stock internals can handle a lot more that 300hp. I'd be a bit concerned running a stroker on stock rods. Is this a 6 or 7 bolt? The added stress from the change in rod ratio will limit you since the stock rods are a weak point.

I'm using 7 bolt!

 

[polverari]

With stock rods and a stroker. I don't think I would turn it up much being your daily driver. Maybe a couple psi, but I think 400is a good limit.

400 in wheels or in crank?

 

[bastarddsm]

At the wheels.

 

[DJRace]

Most people on this forum will be talking in wheel horse power. If you're not launching the car, you should be able to run 1.5bar all day.

 

[polverari]

I went to dyno and the car is running:

1.0 bar on fp68hta
340 hp (crank)
40kgfm (400nm) (crank)

 

[DJRace]

You should definitely be fine going 1.5 bar then.