Krullert

Hi guys, I´m sorry if its been brought up before but I´m looking for a responsive turbo for a stock bottom K24.

Looking at compressor maps, the ones I´ve found doesn´t seem to suit the high flowing K motors, basically I end up below the most effective parts of the maps. Im looking at around 45-50lbs/min @ PR 2.
What I mean is, these compressors seem to be tuned to suit a less flowing engine, that requires a higher PR to reach the same whp.

Would something like a GTX3076 be my best bet, or do you have any other turbos that would wake up at reasonably low rpms?

BR Nick

Chance EG

3071 or 3076 would be a good fit. TR3030R from STC or their T04B Banshee would also be great.

Something within the GT(x) 30 frame.

Balor_Gr

Gtw3476. Id go for .63
Also google Silver Surfer Turbo. That on 63 too

Txdragon

I just recently got one of these for my D. Haven't finished the build yet due to stupid complications, but will hopefully have some feedback on it in a month.

2001GSRSC

A 76mm turbo is not what I call responsive. It needs quiet a bit of pedal to get spooled at that size.

It can move a ton of atmosphere towards the throttle body, so it should support large boost numbers in the high gears.

extremeracer

76mm exducer is what they referring to ie. GT(X)3076/GTX3576, EFR7670, S257SX-E, 5858 territory which all have the more commonly used inducer size of 54 - 58mm.

On a K24 engine a 76mm exducer wheel will actually make for a responsive setup and have a broad powerband. The 2400cc, high flowing head (TSX) and VTC really help to bring the turbo onto boost quite early.

LightningTeg

I am getting ready to sell my STC Interceptor (60.8mm Compressor Inducer, probably closest overall to a GTX3576R). I think it would amazingly responsive on a K24 and is capable of 70lbs min. It works great on my B series which is not nearly as efficient.

GEN2 LS

iTrader: (3)

???? what ya switching to?

2001GSRSC

A 58-60mm sounds right. I'm not familiar with everyone's different nomenclature.

LightningTeg

N/A . Changing directions with it, trying to go more dedicated track car and FI at this point is not in the cards

TheShodan

iTrader: (14)

Why the sell? calling it quits?

Chance EG

I think he answered that question directly above you.

TheShodan

iTrader: (14)

I misread that. I know circuit track and FI can be done. the change in setup is minimal.

Lee Connor

if you really want the turbo to have a wide boost threshold you should go twin scroll, what you have to be careful of with your stock engine is lots of boost at a low rpm bending your rods, so having 1bar of boost at 2500rpm might not be the greatest idea

TheShodan

iTrader: (14)

True twin scroll turbochargers only work to a certain sizes with the right tubular separation combo. But it can be done with a T2 or T3 turbine without all of that. Just having "twin scroll" isn't always the answer

2001GSRSC

Do people still bi turbo? How would using 2x 50mm turbo's to make more than 1x 75mm , work out? I would imgine that is better than a twin scroll for what they are doing.

Txdragon

TT is so outdated.. It's been shown on many occasions that a single turbo will outperform a twin setup. Look at some of the hreats; RX-7, Skyline, Supra, 300Z... Everyone I've known that have owned one or more of those vehicles have converted twin to single; sequential or not..

LightningTeg

I've weighed the pros and cons. Car needs a ton of work all around from suspension to safety to the engine and more and if/when it goes FI again its going to be totally redesigned from the ground up with that in mind. N/a gets the wheels on the pavement sooner and easier

TheShodan

iTrader: (14)

Fair enough. You know I wish you nothing but the best

GEN2 LS

iTrader: (3)

I feel ya! My turbo car has been nothing but headaches and constant maintenance for just a street car. As much as I would love to track it boosted I don't foresee my budget supporting it or getting much track time at all with it. Thinking of either a mild N/A setup or a kraftwerks kit on my current 2.0L gsr. My ITR changed my entire perspective on "fun to drive" factor vs overall hp/speed

scottcraft

Do you think a rotrex would be a more reliable setup compared to your current setup?