Opinions needed: Turbocharger airflow/size recommendations for 600whp+ LSVTEC
 

re: Opinions needed: Turbocharger airflow/size recommendations for 600whp+ LSVTEC
 

I'd start by looking at some of the dyno results and compressor maps of the Garret GT(x)35 series.

76mm+ EFR series from BorgWarner would be worth looking at as well.

re: Opinions needed: Turbocharger airflow/size recommendations for 600whp+ LSVTEC
 

What fuel type and compression is the motor? Can you tell us more about the setup?

Re: Opinions needed: Turbocharger airflow/size recommendations for 600whp+ LSVTEC
 

No such thing. This has been stated before. 600whp+ & "fast spooling under 6000rpms" isn't happening. Accept that premise now....we're patient. :-)

State your purpose of the car other than "street car", fuel requirements ( type of fuel that will be used major of the time), budget (maximum willingness to spend with an actual $ number stated) , and let's hope you you can stay within a family of turbo that may fit the need.

Also state what YOU have and checked and researched so far to avoid redundancies.

Re: Opinions needed: Turbocharger airflow/size recommendations for 600whp+ LSVTEC
 

Fast spooling 600whp 2.0L engine. Its a difficult task.

Re: Opinions needed: Turbocharger airflow/size recommendations for 600whp+ LSVTEC
 

Re: Opinions needed: Turbocharger airflow/size recommendations for 600whp+ LSVTEC
 

Understood. But that doesn't change our answer.

Re: Opinions needed: Turbocharger airflow/size recommendations for 600whp+ LSVTEC
 

I'm assuming he is not going to be drag racing but probably looking to do freeway pulls or something.

Re: Opinions needed: Turbocharger airflow/size recommendations for 600whp+ LSVTEC
 

That makes sense. However, those expectations have to be a bit more reasonable.

The turbocharger options that are readily available may possibly have its threshold at less than 6,000rpms, (which isn't unreasonable at all) however, I believe that his definition of "quick spooling" may be much less than that, which is more than likely unreasonable. Only Todalybuilt can elaborate further to help narrow down these options. The basic questions have to be examined first.

Re: Opinions needed: Turbocharger airflow/size recommendations for 600whp+ LSVTEC
 

I agree, for 600+ horsepower, even if this was used for freeway pulls you don't necessarily need a quick spooling turbo. I mean you're going to be above 6000 RPMS while doing this, drag racing it doesn't matter either because again you will be above 6000 RPMS. Now if he is going for road racing/road course. You will not need 600+ horsepower.

Like you guys said, we really need to know what he is going, I am just assuming.

Re: Opinions needed: Turbocharger airflow/size recommendations for 600whp+ LSVTEC
 

You could use NOS to get the turbo to spool, i.e. enable between 3000-6000rpms and <5psi of boost or something. But yeah, I'm with everybody else, 600whp and quick spool isn't gonna happen.

Re: Opinions needed: Turbocharger airflow/size recommendations for 600whp+ LSVTEC
 

If it weren't for photobucket, god knows why so many people use(d) it, I would refer to D-rob's thread on a 600whp twin scroll EFR RSX build. A twin scroll 8374 B-series is probably the simplest way to achieve decent spool at that power level.

Two other ideas are compound charging (unlikely) or a quick-spool valve. The latter costs a lot, though I do remember a fellow HT member who used it on a GTX3576r build and had great results. Once again, I WOULD have taken the time to fish that one up for you, but for some reason 99% of forum users have apparently never heard of Imgur, sigh.

Re: Opinions needed: Turbocharger airflow/size recommendations for 600whp+ LSVTEC
 

Re: Opinions needed: Turbocharger airflow/size recommendations for 600whp+ LSVTEC
 

^Beautiful teg, very nice sound too. Power curve looks great for the overall peak output, like you said.

Re: Opinions needed: Turbocharger airflow/size recommendations for 600whp+ LSVTEC
 

isnt the upper limits of a gtx3076 around 600whp? seems like that would fit the bill

Re: Opinions needed: Turbocharger airflow/size recommendations for 600whp+ LSVTEC
 

Nope. At over 28-30psi, you're only about 570whp. Compressor map only shows half the story, read that link on the GTX3576R I showed above.

Same compressor wheels as the GTX3076R, but better turbine wheel for 600whp (N111 68'm, same as three GT3582R

Re: Opinions needed: Turbocharger airflow/size recommendations for 600whp+ LSVTEC
 

At that power levels gonna be at the far right of the compressor map... that's a solid 450whp but 500+ is really stretching it.

Re: Opinions needed: Turbocharger airflow/size recommendations for 600whp+ LSVTEC
 

10-4 :thumbup:

Re: Opinions needed: Turbocharger airflow/size recommendations for 600whp+ LSVTEC
 

This setup will be mostly for highway pulls. As crazy as this sounds I have a friend with a B20vtec fully built pushing 410whp with a Garrett t3/t4 .60ar and he keeps pulling way ahead of other guys. He raced a guy with fully built ls/vtec with s366 and another one with a fully built gsr with s300 both cars making well over 530whp. They raced a bunch of times always with the same outcome, he pulls way ahead them, then they pass him on the top end around 130mph if not more, basically by the time the race is pretty much done. I have been in his car as well as the other guys cars while they race with the same outcome every time and they have race a bunch of times from a 30, 40 and 60 roll.

So for my new build my goal is to make 600whp or more and I would like to be able to pull ahead of others super fast, that's why I want a turbo that can accomplish this goal.

Re: Opinions needed: Turbocharger airflow/size recommendations for 600whp+ LSVTEC
 

Gearing and traction are going to be critical to examine as well. You'll want to optimize your acceleration and make sure you take max RPM into account, and what RPM you'll be falling to in between shifts so you stay in boost. Provisions for flat footed or power/sequential shifting would also be nice but probably much beyond the scope of what you're trying to accomplish.

A twin scroll GTX or EFR is still what I'd be looking into, but like others are saying "responsive" becomes a subjective term at these levels. Nitrous for lower RPM, or pre-boost is also an interesting option and would definitely be effective, but complicates things.

Re: Opinions needed: Turbocharger airflow/size recommendations for 600whp+ LSVTEC
 

Freeway racing lower RPM's don't really matter because there is no reason that you should be in low rpm's. You should be dropping low enough between shifts unless you shift super slow.

Re: Opinions needed: Turbocharger airflow/size recommendations for 600whp+ LSVTEC
 

Sounds like your buddies opponents cant drive or dont have traction.

Re: Opinions needed: Turbocharger airflow/size recommendations for 600whp+ LSVTEC
 

I would agree with that.. These must be peak power numbers, these guys are making, and it's difficult to make any more than 550 whp stay to the ground, unless a lot of supplemental components are used, as in Lightnungteg's situation.

OP should really read up on all of lightningteg's video adventures & conquests both as an LS & as n. LSVTEC . His is the methodology you want to follow.

Re: Opinions needed: Turbocharger airflow/size recommendations for 600whp+ LSVTEC
 

@OP: Best advice to follow. As The Shodan has pointed out in the thread you need to be careful of both undersizing and oversizing your turbo selection. Some turbos that claim to offer 600+hp capability in reality fall short due to undersized turbine wheels and 'generous' marketing literature (eg GTX3076) . Other turbo's will again deliver heaps of top-end power but have slow spool and transient response (6266 journal bearing).

A 60 - 62mm turbo is probably the right range for your goals and it happens to be the most universally accepted turbo size for a 600 - 700 hp 4 cylinder. Look into the STC Garrett based turbos like the Interceptor in the video, alternatively a Precision 6062, EFR8374 in twin-scroll config or BW 362 SX-E all fall into that ballpark. If transient response is your main concern then stick to the ball-bearing options (GTX35, STC, EFR, Precision BB). Some of the 57 - 59 mm turbos might get you to the 600whp mark but they'll be at their limit and require a very efficient setup (no restrictions on inatke manifold, cams, turbo manifold, exhaust and intercooler)

You'll also want boost-by-gear or boost-by-speed, Toyo R888's as a minimum or ideally drag radials, LSD and sorted suspension in order to put the power down in a non drag-strip/slick tyre environment. My EG hatch made ~600whp and on normal street tyres I could still light up the front wheels in 4th gear at that power level...

Re: Opinions needed: Turbocharger airflow/size recommendations for 600whp+ LSVTEC
 

My question is if doing highway racing why limit yourself to 600whp LOL.