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Opinions Requested: A Responsive turbocharger option for a stock bottom K24a2

Opinions Requested: A Responsive turbocharger option for a stock bottom K24a2

 
Old 04-19-2019, 10:31 AM
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Default Opinions Requested: A Responsive turbocharger option for a stock bottom K24a2

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

Looking at compressor maps, the ones Ive found doesnt 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
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Old 04-19-2019, 12:03 PM
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Default Re: Responsive turbo for stock bottom K24a2

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.

Last edited by TheShodan; 04-22-2019 at 11:44 AM.
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Old 04-19-2019, 02:46 PM
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Default Re: Responsive turbo for stock bottom K24a2

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

Last edited by TheShodan; 04-22-2019 at 11:45 AM.
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Old 05-02-2019, 03:43 PM
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Default Re: Responsive turbo for stock bottom K24a2

Originally Posted by Balor_Gr View Post
Gtw3476. Id go for .63
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.
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Old 05-02-2019, 04:02 PM
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Default Re: Opinions Requested: A Responsive turbocharger option for a stock bottom K24a2

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.
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Old 05-03-2019, 04:12 AM
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Default Re: Opinions Requested: A Responsive turbocharger option for a stock bottom K24a2

Originally Posted by 2001GSRSC View Post
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.
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.
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Old 05-03-2019, 04:36 AM
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Default Re: Opinions Requested: A Responsive turbocharger option for a stock bottom K24a2

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.
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Old 05-03-2019, 08:47 AM
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Default Re: Opinions Requested: A Responsive turbocharger option for a stock bottom K24a2

Originally Posted by LightningTeg View Post
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.
???? what ya switching to?
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Old 05-03-2019, 10:02 AM
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Default Re: Opinions Requested: A Responsive turbocharger option for a stock bottom K24a2

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

Last edited by 2001GSRSC; 05-03-2019 at 10:48 AM.
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Old 05-03-2019, 10:16 AM
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Default Re: Opinions Requested: A Responsive turbocharger option for a stock bottom K24a2

Originally Posted by GEN2 LS View Post
???? what ya switching to?
N/A . Changing directions with it, trying to go more dedicated track car and FI at this point is not in the cards

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Old 05-04-2019, 06:51 PM
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Default Re: Opinions Requested: A Responsive turbocharger option for a stock bottom K24a2

Originally Posted by LightningTeg View Post
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.
Why the sell? calling it quits?
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Old 05-04-2019, 07:41 PM
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Default Re: Opinions Requested: A Responsive turbocharger option for a stock bottom K24a2

Originally Posted by TheShodan View Post
Why the sell? calling it quits?
I think he answered that question directly above you.
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Old 05-04-2019, 07:57 PM
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Default Re: Opinions Requested: A Responsive turbocharger option for a stock bottom K24a2

Originally Posted by Chance EG View Post
I think he answered that question directly above you.
I misread that. I know circuit track and FI can be done. the change in setup is minimal.
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Old 05-05-2019, 02:22 AM
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Default Re: Opinions Requested: A Responsive turbocharger option for a stock bottom K24a2

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
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Old 05-05-2019, 06:05 AM
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Default Re: Opinions Requested: A Responsive turbocharger option for a stock bottom K24a2

Originally Posted by Lee Connor View Post
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
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
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Old 05-05-2019, 08:15 AM
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Default Re: Opinions Requested: A Responsive turbocharger option for a stock bottom K24a2

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.
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Old 05-05-2019, 10:43 AM
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Default Re: Opinions Requested: A Responsive turbocharger option for a stock bottom K24a2

Originally Posted by 2001GSRSC View Post
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.
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..
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Old 05-07-2019, 06:15 AM
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Default Re: Opinions Requested: A Responsive turbocharger option for a stock bottom K24a2

Originally Posted by TheShodan View Post
I misread that. I know circuit track and FI can be done. the change in setup is minimal.
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
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Old 05-07-2019, 06:52 AM
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Default Re: Opinions Requested: A Responsive turbocharger option for a stock bottom K24a2

Originally Posted by LightningTeg View Post
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
Fair enough. You know I wish you nothing but the best
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Old 05-07-2019, 05:37 PM
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Default Re: Opinions Requested: A Responsive turbocharger option for a stock bottom K24a2

Originally Posted by LightningTeg View Post
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
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
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Old 05-08-2019, 03:55 AM
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Default Re: Opinions Requested: A Responsive turbocharger option for a stock bottom K24a2

Originally Posted by GEN2 LS View Post
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
Do you think a rotrex would be a more reliable setup compared to your current setup?
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