Schister66

what the hell is this "chp" you keep referring to?? I believe you mean crank horsepower, but for those of us who aren't FAS babies, know it as "bhp" or Brake Horsepower....

b18civicEF

Ok listen here you ---- face QikEnuF I just put that on there for ***** and giggles. Oh and I think he is pretty ------- close with his ----. Can you not read!! He is talkin about his setup, with his turbo and his motor! Is that clearing it up enough for you QikEnuF? he's not talkin about a Ls1 with a T3 or T4. If you knew how to f*cking read you would know this by now. QikEnuF do us all a favor and unplug your computer. Oh and I still think its gonna be pretty damn close to 10hp per 1psi. So, close to 90hp over stock. But yes I understand that different turbo's make diff power and Im sure Jo_gobel does to, He seems to know what he is talkin about and knows how figure up his ----. But he isnt talkin about EVERY turbo, just his setup. Read the previous posts and maybe youll get somewhere next time QuikEnuF. Laterz!

klyph

Superchargers make boost too.

Schister66

false

GotIssuez

Neither superchargers or turbos make boost. Boost is a measure of restriction at the intake manifold due to the increase airflow coming into it as forced by the chosen power adder. Turbo and superchargers intake air and compress it.....that is all.

That formula assumes that the turbo is properly sized to the engine that it is on. YMMV as some people don't know enough about putting together a turbo kit to achieve that result. It also takes into account that the car is tuned properly. I have tested that formula with the figures of my last 3 setups and it is very accurate.

I am not going to say this guy is wrong about what the cavi will put down but I will be surprised if it is anything close to what he is thinking.

Another "rule of thumb" is for every 15psi (1 bar, or atmosphere) you effectively double your HP. Here is an example using my 95 GT.

250bhp/210fwhp. Precision T70 with a .68 A/R Master Power turbine housing running 15psi puts down 408hp on a very conservative tune. Doubling it for 15psi gives you 500bhp/420fwhp.

Using the formula.

Flywheel: 210 x .068 = 14.28 x 15psi = 214.2 + 210 = 424.2
Brake: 250 x .068 = 17 x 15psi = 255 + 250 = 505

The formula works plain and simple assuming a properly sized turbo and a good tune.

klyph

O, so the intake manifold makes boost
Without the compressor (turbo/supercharger), boost (positive pressure on the intake) would never be achieved, so go fist yourself. You're arguing semantics by redefining the keywords of the argument.

Dive_Miguel

Who gives a ---- about what equations are correct, ect. WE GET THE IDEA.

Schister66

My roomate is a Mechanical engineering student and taught me about fluid dynamics...therefore i MUST care about being 100% accurate

ok...you have a point. You are wise beyond your years

GotIssuez

Not arguing semantics...just pointing out the flaw in your statement and backing it up with an explanation so you understand, simpleton. And if you had any reading comprehension you would note that I said that the power adder is the reason for the increased airflow. And just in case you missed it I will drop it here again "Boost is a measure of restriction at the intake manifold due to the increase airflow coming into it as forced by the chosen power adder."

And for the record I would rather fist your mom...she tends to squirm and squirt.

Dive_Miguel

I get what you guys are talking about. I am no engineer by trade but there are probubly millions of factors at work. The orignal poster needs to gets some decent fuel management first of he has not already done so.