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Old 15-12-2018, 21:40   #16
Mita
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But what about reliability? I guess on the road it’s not the same issue ?

Do you know much about the above turbo? How do you rate the EFR against the Kai?

What EFR do you have?

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Originally Posted by kikiturbo View Post
problem with full frame is that the cost spirals out... For example I started with an EFR, which looks great on paper as you get WG, dump valve and solenoid in one package... right now I have replaced the WG actuator, WG actuator mount, DV and solenoid....

then you have manifold, custom downpipe, intake and turbo piping, oil lines, turbo support bracket... Just oil and water lines, done properly cost a signifficant ammount of money.. it adds up..

MY experience is that something as a HKS KAI is a sweet spot of power and response. Turbo costs a bit, but comes with everythiing. Will do 450 - 460 real HP no problem.

The moment you go above that you are dealing with either stock frame turbos with somewhat compromised response/turbo lag or a very expensive full frame kit..
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Old 15-12-2018, 23:54   #17
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I run Kai and spool is great and VP 109ms superb with HKS 278 cams to match its a grin machine.
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Old 16-12-2018, 03:10   #18
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HKS turbo is so hard to beat,
Up to 5500rpm virtually nothing can beat it: so in real driving situation it is so wonderful to require no matter what a big build to eclipse it.
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Old 16-12-2018, 17:40   #19
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This out performed the earlier HKS variants with a reliable journal bearing core... without a doubt best turbo in its range 450-530bhp stock frame
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Old 17-12-2018, 07:23   #20
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I've been keeping an eye on this turbo too. I would be tempted with it if my current KAI goes.
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Old 18-12-2018, 21:15   #21
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So is journal bearing more reliable than BB? I appreciate BB has improved transient, but more moving parts.. but journal needs more reliable oiling?

So why have HKS gone journal? Cost ?
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Old 19-12-2018, 06:23   #22
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So is journal bearing more reliable than BB? I appreciate BB has improved transient, but more moving parts.. but journal needs more reliable oiling?

So why have HKS gone journal? Cost ?
No I believe they have gone JB in order to use a MHI built core, utilising their exact tolerances and grade of materials. This route offers reliability on par with a standard turbo as its built by the same factory. To be fair since stock frame modification turbos became a thing with evos the reliability has been hit and miss in most cases... HKS agreed that Performance of the turbos in question is not compromised by using the journal bearing style core so BB is not really required.
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Old 19-12-2018, 06:51   #23
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Interesting. So what’s the Uk price of these? And who supplies them?
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Old 19-12-2018, 08:02   #24
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Ross via Sumo Power I would say
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Old 19-12-2018, 15:09   #25
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Price at Japan i know, would be nice to know EU pricing ?
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Old 19-12-2018, 16:58   #26
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Gum what car you planning on fitting one to?
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Old 20-12-2018, 18:11   #27
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Think my brother will be fitting one to his evo 6 and I might try one on the evo X mate.
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Old 20-12-2018, 18:12   #28
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Keep us posted
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Old 20-12-2018, 22:51   #29
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The MHI JB in top notch, BB upgrade aftermarket may be possible if they have used the TF06 Bering carrier and turbine shaft.
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Old 21-12-2018, 16:20   #30
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How much difference in transient response is there between BB and JB housings, even on the older versions?
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