Most responsive turbochargers

[dc2mike]

im running apexi turbos on mine and they are fantastic!
ax53b60´s

i think i have 600 or more at the fly.

also running tomei pon cams, ported ex manifolds, xs elbows.
dont know if the heads been ported.

but my car spools faster than most gtrs ive been in, and it pushes hard until it hits the revlimit at 8500.

[makenski]

No mean to thread jack, which turbo twin combo can meet a 720 ps mark, with a middle boost threshold?

Glenn, Sam... I read all those links, there isn't any ground breaking solid info. Saun has given some, but I read through them trying to find solid information and it's incomplete so it's hard to base decision off his findings. (What I mean is Sean gave half the info on the turbos... some have PSI on them some don't, do you can't really compare them)

[GT-R Glenn]

I did read your first post Alecci,

As it seems I may soon be in the market for a new pair of turbochargers I'd like to find out which ones are the most responsive (quickest spool-up) if I wanted to attain 600 PS at the flywheel with a standard displacement RB26DETT.

There are lots of turbochargers out there, and while I have seen the diagramme of the different turbochargers' powerband as well as comparisons between two particular types of turbochargers (i.e. HKS GT2530 versus Garrett GT2560R -7) I've never seen a comparison between all/most turbochargers considering what I specified above.

Ok,
The 10 or so examples I gave you may not have solved the question, it was more of a response to this

Like I pointed out in my starting post, I've seen some threads comparing two types of turbochargers with each other, for example, the most popular to compare at this particular time seems to be the GT2530's and the GT2860-7's, or the GT-SS's and the GT2860-5's. Perhaps I've also seen a thread comparing the Nismo R1's to the Trust T517Z's.

HOW WELL HAVE YOU SEARCHED ??

Because you have this all muddled up.

The point I was making was that all your questions (ok most of them) can be answered using the "search" function, I also said those links were from the first 5 pages and there was at least another 20 to go.
So it appears when I find them for you , you can read them but you cantfind any for yourself.....


STOLEN FROM TYNDAGOS SITE BUT POSTED HERE ALREADY SEVERAL TIMES

[makenski]

That graph is really nice... but it lacks information... as I said in my post..

[SamuraiSam]

makensi and Alecci if you 1.) understand how turbochargers work and how to read a compressor map (if you don't buy a copy of Corky Bell's "Maximum Boost" and learn how turbos work) and 2.) knowing this, are both so dense that you cannot understand the dozens of posts and that graph and other information that has been presented to you, HANDED TO YOU ON A PLATTER, if you cannot extrapolate that and make a decision and choose a turbocharger, you have absolutely no f*cking business working on a GT-R. Find a good shop and open your wallet, or give up now, because this is NOT VERY DIFFICULT AND YES, YOUR EXACT QUESTIONS HAVE BEEN ANSWERED IN THOSE VERY THREADS. If you cant look at tyndagos power graphs and gather an idea of where the boost threshold of that turbo is, don't try to pick a turbo yourself. Boost is irrelevant anyways. How much pressure is in your manifold make at X rpm - is totally irreleveant when you are sizing a turbocharger since you pick the POWER you need to make (IE- AIRFLOW) and run a boost level accordingly. This is DIRECTLY REPRESENTED ON TYNDAGO'S GRAPHS which provide you ALL THE INFORMATION YOU NEED TO KNOW TO PICK A TURBO.

Example: You can put a KO3 from a VW 1.8T on a RB26 and make 20psi at 3000rpm but it's not going to do you a sh*tlick of good since you aren't going to make any power, your torque curve is going to be CRAP. Boost is irrelevant.

[makenski]

Originally Posted by SamuraiSam

makensi and Alecci if you 1.) understand how turbochargers work and how to read a compressor map (if you don't buy a copy of Corky Bell's "Maximum Boost" and learn how turbos work) and 2.) knowing this, are both so dense that you cannot understand the dozens of posts and that graph and other information that has been presented to you, HANDED TO YOU ON A PLATTER, if you cannot extrapolate that and make a decision and choose a turbocharger, you have absolutely no f*cking business working on a GT-R. Find a good shop and open your wallet, or give up now, because this is NOT VERY DIFFICULT AND YES, YOUR EXACT QUESTIONS HAVE BEEN ANSWERED IN THOSE VERY THREADS. If you cant look at tyndagos power graphs and gather an idea of where the boost threshold of that turbo is, don't try to pick a turbo yourself. Boost is irrelevant anyways. How much pressure is in your manifold make at X rpm - is totally irreleveant when you are sizing a turbocharger since you pick the POWER you need to make (IE- AIRFLOW) and run a boost level accordingly. This is DIRECTLY REPRESENTED ON TYNDAGO'S GRAPHS which provide you ALL THE INFORMATION YOU NEED TO KNOW TO PICK A TURBO.

Example: You can put a KO3 from a VW 1.8T on a RB26 and make 20psi at 3000rpm but it's not going to do you a sh*tlick of good since you aren't going to make any power, your torque curve is going to be CRAP. Boost is irrelevant.

Get off your high horse. That graph does not hand me the info I need.. what psi were those turbos runnign at...it's possible it was running below the turbo was capable of.. which makes this graph useless.

I don't even have to say anything to you, douche.

[ru']

lol @ this thread

[paul cawson]

Originally Posted by SamuraiSam

There is no such thing as turbo lag. There is no such thing as spool up time.

Lag is the loss of momentum of the turbine wheel due to inertia and surge

[SamuraiSam]

Originally Posted by paul cawson

Lag is the loss of momentum of the turbine wheel due to inertia and surge

Loss of momentum =/= inertia.

Surge is surge.

Try out "Transient Response". tyndago's thread "Turbo lag real or imagined" Which the OP quoted as having read, clearly addresses what lag actually is and confusion with the term "boost threshold"

"Spool Time" is a bunch of bullshit and is a term used by people who do not know how turbochargers work. There is no TIME associated with SPOOL only AIRFLOW which is dependent on the VE of the engine and ENGINE SPEED.

[SamuraiSam]

Originally Posted by makenski

That graph does not hand me the info I need.. what psi were those turbos runnign at...it's possible it was running below the turbo was capable of.. which makes this graph useless.

READ TYNDAGO'S POST. READ MY POST. "PSI" IS IRRELEVANT WHEN SELECTING A TURBOCHARGER



I am trying, to post correct factual information. I am not lying to you.

[Richf]

Originally Posted by SamuraiSam

I am trying, to post correct factual information. I am not lying to you.

you may not be but

A) You arent helping

b) You are incorrect in many of your statements

C) You are sounding like a bit of a dick

hope that helps

[SamuraiSam]

a. The answers are already there. You can only help someone so much. People need to help themselves when all the info is in front of them.

b. What am I incorrect in saying?

c. I am a huge asshole. This is intentional.

[hodgie]

SamuraiSam you obviously know all the technical terminology but i think you`ll find that most of us on here dont have the slightest idea of what your going on about.
To the uneducated, myself included, turbo lag is the time before the car punches you in the butt and really starts to motor.
Maybe you need to understand that we aren`t all mechanics just inthusiasts because your technical posts although maybe factually correct do nothing but belittle some of us on here.

[Stachi]

I like many of Sam's posts (if this is his actual name), but maybe if he would work on the answer to questions "C" some on here would like him more?
Don't get me wrong, but whats the point in trying to help anyone out but saying about himself that he's an asshole?

Marc

[makenski]

anyone try gt2835? how do they perform? do they fit with stock manifold?