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Hks Turbo Comparison

Hakai

By Hakai,
in Engines & Forced Induction

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Hakai Enthusiast

Hakai

Posted
Posted

Since toying with the idea of putting a supercharger on the RB20 went down in flames (Read: Cost) I'm currently looking into turbo upgrades, and I was recently talking to Tom from www.bd4s.com.au.

I was enquiring as to the price of their HKS GT2530KAI units. He wrote me back telling me that the HKS GT-RS is a better turbo. He claims that it will spool faster than the 2530 and also make more power through the range.

I looked at the HKSUsa website and it appears that the GT-RS and the 2530 both have the same exhaust housing and wheel specs, but the GT-RS has a larger compressor side, does this mean, as Tom is saying, it will spool faster and make more power through the range than the 2530?

Another thing I am concerned over is the fact that HKSUsa only list the GT-RS as being supplied with a T25 flange, I was under the impression that for a unit to be bolt-on for the RB engines, it required a T3 flange?

Any insight would be greatly appreciated, as well as any experienced people have had with either of these units, especially on the RB20.

Cheers,

Ben.

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paulr33 Grand Master

paulr33

Posted
Posted

How hard did you search? I found almost everything within 5 minutes

http://www.skylinesaustralia.com/forums/in...howtopic=109249

http://www.skylinesaustralia.com/forums/in...howtopic=114907

http://www.skylinesaustralia.com/forums/in...howtopic=109587

http://www.skylinesaustralia.com/forums/in...howtopic=106698

http://www.skylinesaustralia.com/forums/in...showtopic=91481

http://www.skylinesaustralia.com/forums/in...showtopic=90940

http://www.skylinesaustralia.com/forums/in...showtopic=89690

http://www.skylinesaustralia.com/forums/in...showtopic=76924

http://www.skylinesaustralia.com/forums/in...showtopic=49826

http://www.skylinesaustralia.com/forums/in...showtopic=76735

http://www.skylinesaustralia.com/forums/in...showtopic=74396

http://www.skylinesaustralia.com/forums/in...showtopic=69158

http://www.skylinesaustralia.com/forums/in...showtopic=65658

http://www.skylinesaustralia.com/forums/in...showtopic=65548

http://www.skylinesaustralia.com/forums/in...showtopic=63367

Hakai Enthusiast

Hakai

Posted
  • Author
Posted
How hard did you search? I found almost everything within 5 minutes

http://www.skylinesaustralia.com/forums/in...howtopic=109249

http://www.skylinesaustralia.com/forums/in...howtopic=114907

http://www.skylinesaustralia.com/forums/in...howtopic=109587

http://www.skylinesaustralia.com/forums/in...howtopic=106698

http://www.skylinesaustralia.com/forums/in...showtopic=91481

http://www.skylinesaustralia.com/forums/in...showtopic=90940

http://www.skylinesaustralia.com/forums/in...showtopic=89690

http://www.skylinesaustralia.com/forums/in...showtopic=76924

http://www.skylinesaustralia.com/forums/in...showtopic=49826

http://www.skylinesaustralia.com/forums/in...showtopic=76735

http://www.skylinesaustralia.com/forums/in...showtopic=74396

http://www.skylinesaustralia.com/forums/in...showtopic=69158

http://www.skylinesaustralia.com/forums/in...showtopic=65658

http://www.skylinesaustralia.com/forums/in...showtopic=65548

http://www.skylinesaustralia.com/forums/in...showtopic=63367

I searched for all the keywords I could think of that were relevant, the search function has never liked me at all, I can very rarely turn up anything useful.

The links helped, had most of the info I needed to know. Thanks Paul. :D

Ben.

Dale FZ1 Veteran

Dale FZ1

Posted
Posted

The 2530KAI is little modified from the previous 2530, other than a ported shroud comp housing. Specs of the rotating assembly is unchanged. Response ability should be unchanged. Normally the porting is done to control/reduce surge.

The GT-RS has an upsized comp impeller 71mm vs 60mm for the 2530KAI. This will directly affect (reduce) its ability to respond quickly, but increase its power potential compared to the KAI.

Hope this helps.

cheers

Dale

discopotato03 Grand Master

discopotato03

Posted
Posted (edited)

Search HKS Japan , click first site and look at the menue on the LHS of page . Click on Turbo , GT-RS and scroll down through the S13 (SR20 version) , R34 GTR version to RB20/25 version . Even shows bling pic of port shrouded comp cover .

Enjoy .

Edited by discopotato03
Hakai Enthusiast

Hakai

Posted
  • Author
Posted
The 2530KAI is little modified from the previous 2530, other than a ported shroud comp housing. Specs of the rotating assembly is unchanged. Response ability should be unchanged. Normally the porting is done to control/reduce surge.

The GT-RS has an upsized comp impeller 71mm vs 60mm for the 2530KAI. This will directly affect (reduce) its ability to respond quickly, but increase its power potential compared to the KAI.

Hope this helps.

cheers

Dale

So it is in fact true that the 2530KAI will spool faster than the GT-RS, but it's due to less rotating mass, if I understand what you're saying correctly?

Sounds like for both purposes (Price and response) the 2530KAI is deffinately my best choice.

Infomation has helped alot, thanks all :D

Ben.

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