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Installing Hks Adjustable Actuator

ashr32

By ashr32,
in Engines & Forced Induction

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ashr32 Rising Star

ashr32

Posted
Posted

Hi Guys,

ive got a rb20det r32 with a s1 r33 turbo and have just put a HKS adjustable actuator on it. I thought id share my experiences and hopefully get my questions answered at the same time.

To set the scene the car has all the supporting mods as-well as a greddy profec B spec II boost controller.

With the controller off i sit at about 10psi with a trail off at high rpm. The turbo had the original actuator which was set at 7psi so i got about 3psi from the supporting mods.

Now when installing the HKS item i firstly just lined up the hole that connects to the turbo's wastegate flap and took for a quick spin.

TEST 1: RESULT = 5psi and very slow

Now at this point i was a bit surprised so i turned on the boost controller to see if the actuator was actually working or if id stuffed up.

TEST 2: RESULT = 6psi

so i was happy that it was working fine but just set too low. I pulled over and tightened up the screw about 1 cm. this wasnt going to be enough but i just wanted to see an increase and went for another spin.

TEST 3: RESULT = 6.7psi

so i repeated step 3 again and again until i was back up to about 10psi.

now that's all i have done so far and have noticed that the boost is getting to 10psi and that slowly creeping to 10.8 at high rpm, so should I loosen the screw a little?

Or should I use the boost controller? I'm aiming to run the turbo at 12.5 - 13psi

As i do some more testing I'll update the thread with my progress.

cheers

ASh

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R33NZSL33PA Explorer

R33NZSL33PA

Posted
Posted
Hi Guys,

ive got a rb20det r32 with a s1 r33 turbo and have just put a HKS adjustable actuator on it. I thought id share my experiences and hopefully get my questions answered at the same time.

To set the scene the car has all the supporting mods as-well as a greddy profec B spec II boost controller.

With the controller off i sit at about 10psi with a trail off at high rpm. The turbo had the original actuator which was set at 7psi so i got about 3psi from the supporting mods.

Now when installing the HKS item i firstly just lined up the hole that connects to the turbo's wastegate flap and took for a quick spin.

TEST 1: RESULT = 5psi and very slow

Now at this point i was a bit surprised so i turned on the boost controller to see if the actuator was actually working or if id stuffed up.

TEST 2: RESULT = 6psi

so i was happy that it was working fine but just set too low. I pulled over and tightened up the screw about 1 cm. this wasnt going to be enough but i just wanted to see an increase and went for another spin.

TEST 3: RESULT = 6.7psi

so i repeated step 3 again and again until i was back up to about 10psi.

now that's all i have done so far and have noticed that the boost is getting to 10psi and that slowly creeping to 10.8 at high rpm, so should I loosen the screw a little?

Or should I use the boost controller? I'm aiming to run the turbo at 12.5 - 13psi

As i do some more testing I'll update the thread with my progress.

cheers

ASh

lol u didnt need the actuator if u had a good boost controller heh but anyway turn the adjustment nut/wastegate arm connector so it stays closed for long thus giving u more boost . :bunny:

ashr32 Rising Star

ashr32

Posted
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Posted

well i had the actuator sitting around and i really only want to use the controller for fine tuning. one other thing is i lost the circlip that goes over the actuator where can i get 1?

cheers

ash

Birds Grand Master

Birds

Posted
Posted

I'm in the eastern suburbs...I'll come collect and drop off a sixer if the actuator is still good (think mine is rooted) and hasn't been played with. What's your brew?

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