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Rb 25 Turbo With A Hks Acuator

335

By 335,
in Engines & Forced Induction

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335 Rising Star

335

Posted
Posted (edited)

Hello

I am putting a RB25 turbo on to my RB20 engine. The Rb25 turbo has a HKS acuator on it. Does any know what this does for the turbo? I have read that I should put my RB 20 one on to the RB25 turbo, but should I keep the HKS one on their when I put it on to my engine?

Help please Thanks

Edited by 335
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allthewaytotheskyline Mentor

allthewaytotheskyline

Posted
Posted

mmmm...this could very well be a 14psi actuator...as most hks actuators are....what amount of boost do you plan on running and what modifications other then the turbo do you have to support these???

i will tell you now with an actuator set at 14psi you wont get any spiking or weird boost creep...it will be smooth and throughout your rev range.

Adriano Grand Master

Adriano

Posted
Posted
mmmm...this could very well be a 14psi actuator...as most hks actuators are....what amount of boost do you plan on running and what modifications other then the turbo do you have to support these???

i will tell you now with an actuator set at 14psi you wont get any spiking or weird boost creep...it will be smooth and throughout your rev range.

And very dangerous to the lifespan of the turbo. Stock rb25 turbos are renown for blowing at more than 12 psi.

LTHLRB Grand Master

LTHLRB

Posted
Posted

ran my rb25 turbo on 15psi daily.. never blew up and no shaft play :laugh: made 206kw

hks actuators are a very good application for an internal gate turbo, just adjust it down to around 11 to 13psi with a good tune.

335 Rising Star

335

Posted
  • Author
Posted
got the same setup on our silvia, rb20... 25 turbo and hks actuator

just adjust the actuator to what reads about 14-15psi and no need for boost controller :ermm:

I am putting this, downpipe, split front pipe, hi flow cat, onto the car. I was planning on buying a boost controller. So far , everyone says put the RB20 actuator onto the RB25 turbo.

If its going to shorten the life of the turbo I will take it off.

Keep or take off?

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