TAG has a twincharge setup? I thought that was Hahn and they gave up on it....wow, I'm out of the loop. LOL

 

100% stock

Don't plan on really modifying it anytime soon.

 

im confused by your statement, are you trying to say that PSI from one blower can have more CFM than PSI from another blower? PSI is a constant, you cant have 10PSI that has more Air in it than 10 PSI on the same engine but with a different induction.

On the LSJ 20 PSI from an M62 and 20 PSI from a turbo are both pusing the exact same amount of air into the engine. While the turbo will make more HP because its more efficient, both engines will be ingesting the same amount of air.

In your post your making two different and contraditing statements about PSI. First you say PSI is a measure of pressure and restrictions, then you say PSI is a measure of CFM.

 

I have a feeling that that statment is completly and utterly wrong or worded incorrectly.....

 

Don't confuse PSI with CFM. I think thats what some of you are doing. If you run 20 psi of boost thru a 2inch pipe and 20psi of boost thru a 4inch pipe the 4incher is gonna give you more CFM of air and more hp even tho its running the same boost.


Turbos ARE in fact more efficient then superchargers are for the simple fact the supercharger is belt driven and takes HP to make HP while a turbo uses the exhaust gases to create boost. Basicly free hp, as in no parisitic power lose like you have with a supercharger/blower.

 

There is nothing contradictive about my statement.

Re-read what I wrote...I said PSI PER PSI. And no, just because it is more efficient doesn't mean that's the only advantage over a larger turbocharger over another. If you honestly think a GT30 or GT35 Turbocharger flows the same amount of air as a M62, you're seriously confussed.

The engine isn't ingesting anything, it's being forced everything...hence forced induction. It's not like a naturally aspirated engine where intake & exhaust resonating are helping to ingest air, it's being force fed air.

PSI is a measurement of pressure, yes. PSI is also a measurement of restriction, yes. Take a charge pipe on a turbo setup. The vehicle does 10 PSI for example but say a coupler comes loose and there is a small opening, it will cause a boost leak which is basically a pressure drop because it's not being restricted into the charge pipe, it's escaping. If you want another example: Take a balloon and you blow it up and it stays blown up. You're restricting air from leaving. If you open up the balloon a little bit, air will escape.

You can't build pressure unless you're restricting it. Same goes for tires and many other things.

 

Boost doesn't make power. Air flow does.

 

The size of the charge pipe has nothing to do with the amount of air you will force into the motor, that is effecting the velocity of air traveling towards the engine. The compressor determines the amount of air that is being created.

 

Hmmm, I think maybe you misunderstand what I'm saying. What I was trying to say is that if you can have twice the size piping and retain the same level of boost its flowing more air. More air = more HP its the basic idea behind turbos and blowers.

Take for example when you port the SC supercharger, the PSI levels drop but the HP increases thats causes its moving more CFM of air into the engine.

My turbo T/A had a 2 inch inlet pipe from the turbo to the engine and it ran 20 to 24psi of boost. When I had it ported and opened to 2.5 inches the boost dropped to between 16 and 20 psi but the car made GOBS more power.

 

Dude

You are so contradicting yourself. You are saying that you are not saying anything about CFM but then you say "I'm talking about the intake of the air into the engine"...THAT'S CFM!

No, a M62 and a small T3 might flow the same amount of air but I'm talking about a GT30 or a GT35. You WILL NOT flow the exact same amount of air as the M62. Look at Compressor Maps dude.

 

dude your not listening to me, im not talking about flow from the M62 or Turbo. I know they can flow more or less air than one another. But the engine can only take in so much air at a time.

You said ealier that an engine taking in 10 PSI can make the same amount of HP as 20 PSI, with a different type of power adder, yes it can due to efficiency, but not CFM. now lets remove everything put the PSI. No efficiency ratings or power draw. PSI is a measure of resistance, its a constant. If you have two intake temps of 120F and two power adders. One pushing 10 PSI and one pushing 20 PSI, the 20 PSI is going to be making more power. Even if the 10 PSI one is capable of pushing alot more CFM, it doesnt push it into the engine, HENCE PSI is a measure of resistance.

You can only push so much into an engine, i dont care how much air it flows.

 

That's technically true but you're also talking about maxxing out the efficiency of the engine...which realistically you wouldn't be doing on a completely stock engine. And remember that you're FORCING air, not ingesting naturally...not only are you forcing in air but you're forcing in compressed air meaning you can have more air molecules.

Your comparison of intake temperatures and boost pressures is getting way off topic. I made it simple, A M62 is not going to flow as much air as a GT30 or GT35 turbocharger and it would make greater power than the M62 would and this is NOT even getting into the efficiency of either, this is all talking about within their efficiency range.

 

PSI and CFM are getting confused. I knew it.

 

Yeah and not by me lol

 

is it possible to do the swap by myself and a couple freinds who know alot about turbos

 

Yeah you could but I would go over the whole process with them to make sure you guys to do every single task.

 

turbo lag is dumb

 

well then answer this. if go turbo with no other changes to the motor then how do you increase CFM with less boost. you need cams porting exhaust and piston compression ratio changes oh and how about scrapping the intercooler. and go with somthing less restrictive that is air to air?