Differences Between HKS Actuators - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

MrMigs · 10-08-2013, 11:52 AM

So, I noticed HKS has 2 actuator kits available. There's the GT Actuator kit, and this other one that more people seem to buy, which is about half the price.

^ HKS GT Actuator

^ HKS (non-GT) Actuator

What's the differences?

It looks like the purple GT actuator can be opened up, and possibly the spring inside can be replaced with springs of different rates. But, that's just a guess. Does anyone have any additional info on this?

Here's some links:
HKS USA Internal Wastegate Actuator - HKS Actuator
HKS USA GT Actuator Upgrade Kits - HKS GT Actuator

Thanks in advance.

***dorkidori_s13*** · 10-08-2013, 12:38 PM

not sure of the difference, but i have the standard HKS Wastegate Actuator (the non purple one) on my S15 turbo on my s13 SR, works like a champ! i have mine set at 12psi (which is stock boost on the redtop/blacktop SRs, not 7psi) and i have zeno issues!

adjustable wastegates are handy if you want to keep a maximmum/minimum boost level on your turbo (ie: running 16psi on a boost controller and having it taper back to 12psi). i run one because im not fond of having a visible boost controller.

MrMigs · 10-08-2013, 07:20 PM

Hmm seems that most people have no problems using the non-purple actuator... then I wonder what the purpose is for the GT version...

Anyways, Great! Thanks for the advice. Kinda wish the forum didn't remove the whole rep system ha ha

Drift_FX · 10-08-2013, 07:24 PM

if your going to spend more money go with an external wastegate, if not use the silver one, it works great....

***dorkidori_s13*** · 10-08-2013, 08:40 PM

Quote:

Originally Posted by Drift_FX

if your going to spend more money go with an external wastegate, if not use the silver one, it works great....

external wastegate is kind of pointless on internally gated turbos. especially T2 and GT2 series turbos (which the HKS wastegate actuator is made for)

Drift_FX · 10-08-2013, 09:08 PM

Quote:

Originally Posted by dorkidori_s13

external wastegate is kind of pointless on internally gated turbos. especially T2 and GT2 series turbos (which the HKS wastegate actuator is made for)

i realize this, i was also implying that they would no longer use an internally gated turbo if they went externally wastegated. i forgot this is zilvia and you need to explain averyhing in detail or else someone may do something stupid...lol my mistake...

***dorkidori_s13*** · 10-08-2013, 10:04 PM

Quote:

Originally Posted by Drift_FX

i realize this, i was also implying that they would no longer use an internally gated turbo if they went externally wastegated. i forgot this is zilvia and you need to explain averyhing in detail or else someone may do something stupid...lol my mistake...

lol believe it or not (if you havent seen them already), there are bottom mount T2 flanged tubular manifolds that use external wastegates for the SR now.

the waste of time people come up with i swear...

Dboyizmlg · 10-08-2013, 10:48 PM

I also have the silver one on my Sr20.
I have it set at 10psi, it holds boost real steady, no boost creep.
Works like a true CHAMP!

*brndck* · 10-08-2013, 10:52 PM

wow thats the first time i've seen that purple one.
looks like you can swap out springs, like an external.
i use the silver one and its super reliable.

Drift_FX · 10-08-2013, 11:02 PM

Quote:

Originally Posted by dorkidori_s13

lol believe it or not (if you havent seen them already), there are bottom mount T2 flanged tubular manifolds that use external wastegates for the SR now.

the waste of time people come up with i swear...

i actually have not seen those....lol some people....

***dorkidori_s13*** · 10-08-2013, 11:42 PM

my guess is that the GT is for higher horsepower applications exceeding like 350-400hp. though i didnt think those numbers could really be reached with a T2 series turbo. is there internally gated GT3X series turbos now?

Drift_FX · 10-09-2013, 12:28 AM

i had an hks gtrs t28 turbo that was internally gated with the silver actuator and i made 389hp and 365 flbs of torque at 17psi, so that silver actuator will work for about 400hp...

found a t3 internally gated
http://www.cxracing.com/mm5/merchant...ode=TRB-T3T4-V

only rated for 350hp....lol

***dorkidori_s13*** · 10-09-2013, 12:41 AM

i wouldnt touch a CXRacing turbo with a 20ft pole to be honest...

Drift_FX · 10-09-2013, 12:54 AM

Quote:

Originally Posted by dorkidori_s13

i wouldnt touch a CXRacing turbo with a 20ft pole to be honest...

i wasnt saying it was good...... just that i found one...lol

MrMigs · 10-09-2013, 03:41 AM

I'm pretty sure there's some writing on the HKS Japan website. Their english translated writing doesn't really specify the benefits of one version vs. the other though.

GTACTUATOR UPGRADE KIT /TURBO SUPPORT PARTS | TURBO | PRODUCT | HKS
ACTUATOR UPGRADE KIT /TURBO SUPPORT PARTS | TURBO | PRODUCT | HKS

It looks like the video on the GT Actuator page speaks a little bit about the differences between the two. Anyone know Japanese?

Prok0 · 10-10-2013, 12:18 PM

A big selling point of those is you dont have to remove the rear section which is threaded to the rod to adjust boost as you did on the older actuator.

If you look you see a threaded shank which you can loosen up the nuts on and shorten or lengthen to adjust boost. On the traditional actuator you need to remove the rear piece which goes over the flapper arm, shorten or lengthen, install, and re-check your boost pressure. So its a bit of a pain.

MrMigs · 10-10-2013, 02:06 PM

^ Ohhhhhh berry good info!

10-08-2013, 11:52 AM	#1
MrMigs Nissanaholic! Join Date: Jul 2001 Location: San Gabriel, CA Age: 40 Posts: 1,675 Trader Rating: (5) Feedback Score: 5 reviews	Differences Between HKS Actuators So, I noticed HKS has 2 actuator kits available. There's the GT Actuator kit, and this other one that more people seem to buy, which is about half the price. ^ HKS GT Actuator ^ HKS (non-GT) Actuator What's the differences? It looks like the purple GT actuator can be opened up, and possibly the spring inside can be replaced with springs of different rates. But, that's just a guess. Does anyone have any additional info on this? Here's some links: HKS USA Internal Wastegate Actuator - HKS Actuator HKS USA GT Actuator Upgrade Kits - HKS GT Actuator Thanks in advance. __________________ Drifting is just a compromise between you and your car.

10-08-2013, 12:38 PM	#2
*dorkidori_s13* ITS LISA'S FAULT!!! Join Date: Jun 2003 Location: Las Vegas Age: 42 Posts: 7,492 Trader Rating: (41) Feedback Score: 41 reviews	not sure of the difference, but i have the standard HKS Wastegate Actuator (the non purple one) on my S15 turbo on my s13 SR, works like a champ! i have mine set at 12psi (which is stock boost on the redtop/blacktop SRs, not 7psi) and i have zeno issues! adjustable wastegates are handy if you want to keep a maximmum/minimum boost level on your turbo (ie: running 16psi on a boost controller and having it taper back to 12psi). i run one because im not fond of having a visible boost controller. __________________ Check out my IG for what I'm up to! DORKIDORI INSTAGRAM!!!

10-08-2013, 07:20 PM	#3
MrMigs Nissanaholic! Join Date: Jul 2001 Location: San Gabriel, CA Age: 40 Posts: 1,675 Trader Rating: (5) Feedback Score: 5 reviews	Hmm seems that most people have no problems using the non-purple actuator... then I wonder what the purpose is for the GT version... Anyways, Great! Thanks for the advice. Kinda wish the forum didn't remove the whole rep system ha ha __________________ Drifting is just a compromise between you and your car.

10-08-2013, 11:42 PM	#11
*dorkidori_s13* ITS LISA'S FAULT!!! Join Date: Jun 2003 Location: Las Vegas Age: 42 Posts: 7,492 Trader Rating: (41) Feedback Score: 41 reviews	my guess is that the GT is for higher horsepower applications exceeding like 350-400hp. though i didnt think those numbers could really be reached with a T2 series turbo. is there internally gated GT3X series turbos now? __________________ Check out my IG for what I'm up to! DORKIDORI INSTAGRAM!!!

10-09-2013, 12:41 AM	#13
*dorkidori_s13* ITS LISA'S FAULT!!! Join Date: Jun 2003 Location: Las Vegas Age: 42 Posts: 7,492 Trader Rating: (41) Feedback Score: 41 reviews	i wouldnt touch a CXRacing turbo with a 20ft pole to be honest... __________________ Check out my IG for what I'm up to! DORKIDORI INSTAGRAM!!!

10-08-2013, 07:24 PM	#4
Drift_FX Zilvia Junkie Join Date: Apr 2010 Location: South NJ Posts: 390 Trader Rating: (3) Feedback Score: 3 reviews	if your going to spend more money go with an external wastegate, if not use the silver one, it works great....

10-08-2013, 10:48 PM	#8
Dboyizmlg Nissanaholic! Join Date: Aug 2011 Location: SoCal (I.E.), San Berdino, Colton, Redlands Posts: 1,676 Trader Rating: (18) Feedback Score: 18 reviews	I also have the silver one on my Sr20. I have it set at 10psi, it holds boost real steady, no boost creep. Works like a true CHAMP!

10-09-2013, 12:28 AM	#12
Drift_FX Zilvia Junkie Join Date: Apr 2010 Location: South NJ Posts: 390 Trader Rating: (3) Feedback Score: 3 reviews	i had an hks gtrs t28 turbo that was internally gated with the silver actuator and i made 389hp and 365 flbs of torque at 17psi, so that silver actuator will work for about 400hp... found a t3 internally gated http://www.cxracing.com/mm5/merchant...ode=TRB-T3T4-V only rated for 350hp....lol

10-09-2013, 03:41 AM	#15
MrMigs Nissanaholic! Join Date: Jul 2001 Location: San Gabriel, CA Age: 40 Posts: 1,675 Trader Rating: (5) Feedback Score: 5 reviews	I'm pretty sure there's some writing on the HKS Japan website. Their english translated writing doesn't really specify the benefits of one version vs. the other though. GTACTUATOR UPGRADE KIT /TURBO SUPPORT PARTS \| TURBO \| PRODUCT \| HKS ACTUATOR UPGRADE KIT /TURBO SUPPORT PARTS \| TURBO \| PRODUCT \| HKS It looks like the video on the GT Actuator page speaks a little bit about the differences between the two. Anyone know Japanese? __________________ Drifting is just a compromise between you and your car.

10-10-2013, 12:18 PM	#16
Prok0 Zilvia Junkie Join Date: Apr 2003 Location: FL Age: 37 Posts: 376 Trader Rating: (0) Feedback Score: 0 reviews	A big selling point of those is you dont have to remove the rear section which is threaded to the rod to adjust boost as you did on the older actuator. If you look you see a threaded shank which you can loosen up the nuts on and shorten or lengthen to adjust boost. On the traditional actuator you need to remove the rear piece which goes over the flapper arm, shorten or lengthen, install, and re-check your boost pressure. So its a bit of a pain. __________________ Sales @ Enjuku email:[email protected] phone:352-241-8399

10-10-2013, 02:06 PM	#17
MrMigs Nissanaholic! Join Date: Jul 2001 Location: San Gabriel, CA Age: 40 Posts: 1,675 Trader Rating: (5) Feedback Score: 5 reviews	^ Ohhhhhh berry good info! __________________ Drifting is just a compromise between you and your car.