boost question - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

youngbrazee1 · 06-18-2009, 05:21 AM

is there a way to manipulate the boost with out a boost controller?

HYPNOTIK · 06-18-2009, 05:23 AM

Adjustable actuator.

Tensor187x · 06-18-2009, 09:24 AM

^^

Yup. HKS Actuator.

slider2828 · 06-18-2009, 09:43 AM

Screw in screw out. Make the actuator rod longer = more boost, shorter rod actuator = less boost....

bl3ujay07 · 06-18-2009, 11:26 AM

^^^Isnt it the other way around??? Longer rod = less boost and shorter rod = more boost??? Or atleast thats how it is with my hks actuator, i think.

slider2828 · 06-18-2009, 01:05 PM

I think the way I describe it is correct as the longer rod holds the wastegate closed for longer... I am logically guessing....

landins13 · 06-18-2009, 01:15 PM

you can also use a restrictor from advace, it looks like a normal plastic vac tuve union but it has a metal restricter inside of it. that will raise the boost. and if its too high you use a drill bit to ream it out by hand a little. its ghetto but it works

johngriff · 06-18-2009, 01:25 PM

space the wastegate against the bracket w/washers

ILoveJDM · 06-18-2009, 01:35 PM

Quote:

Originally Posted by slider2828

I think the way I describe it is correct as the longer rod holds the wastegate closed for longer... I am logically guessing....

but the rod pushes the flap outward, opening the wastegate

the shorter the rod, the more the spring has to be compressed to open it as much?

thats how i understood it, ive only played with a couple hks internal gates, i can never remember

slider2828 · 06-18-2009, 03:40 PM

O crap you are right, its the opposite, forgot its a pull not a push!

SHORTER IT IS!!!

godsmack · 06-18-2009, 07:00 PM

correct the shorter the rod the more boost you get. hks actuators are pretty cheap but i'd also get a boost gauge while you're at it. you have to adjust the hks and you don't want to be boosting to high with stock injectors if thats what you have.

slider2828 · 06-18-2009, 07:21 PM

Yeah 1/4 turn at one time!

youngbrazee1 · 06-22-2009, 09:59 AM

i already have a boost gauge and 740cc injectors... so how do i shorten the rod...by cutting?

Razi · 06-22-2009, 10:06 AM

Or by putting washers against the wastegate brackets as Johngriff said.
Or by getting a HKS wastegate

You could cut it and weld it if you want I guess.

HYPNOTIK · 06-22-2009, 10:08 AM

Yes, get out the hacksaw. LOL

Are you serious? HKS ADJUSTABLE actuator, you turn the rod to lenghen or shorten it.

Ashtony · 06-22-2009, 10:41 AM

just the answers i was looking for. thanks guys

06-18-2009, 05:21 AM	#1
youngbrazee1 Leaky Injector Join Date: Apr 2008 Location: georgia/ soon to be tampa Age: 37 Posts: 74 Trader Rating: (0) Feedback Score: 0 reviews	boost question is there a way to manipulate the boost with out a boost controller?

06-18-2009, 05:23 AM	#2
HYPNOTIK Zilvia Addict Join Date: Apr 2008 Location: Pisa, Italy Posts: 700 Trader Rating: (3) Feedback Score: 3 reviews	Adjustable actuator. __________________

06-18-2009, 09:43 AM	#4
slider2828 Post Whore! Join Date: Oct 2004 Location: San Francisco, CA Posts: 6,040 Trader Rating: (13) Feedback Score: 13 reviews	Screw in screw out. Make the actuator rod longer = more boost, shorter rod actuator = less boost.... __________________ Turn and Burn!

06-18-2009, 01:05 PM	#6
slider2828 Post Whore! Join Date: Oct 2004 Location: San Francisco, CA Posts: 6,040 Trader Rating: (13) Feedback Score: 13 reviews	I think the way I describe it is correct as the longer rod holds the wastegate closed for longer... I am logically guessing.... __________________ Turn and Burn!

06-18-2009, 01:15 PM	#7
landins13 Zilvia Addict Join Date: Jan 2008 Location: Baltimore Posts: 986 Trader Rating: (3) Feedback Score: 3 reviews	you can also use a restrictor from advace, it looks like a normal plastic vac tuve union but it has a metal restricter inside of it. that will raise the boost. and if its too high you use a drill bit to ream it out by hand a little. its ghetto but it works __________________ NO HANDS IN PANTS!!

06-18-2009, 09:24 AM	#3
Tensor187x BANNED Join Date: Nov 2007 Location: OC Age: 38 Posts: 179 Trader Rating: (1) Feedback Score: 1 reviews	^^ Yup. HKS Actuator.

06-18-2009, 11:26 AM	#5
bl3ujay07 Zilvia Addict Join Date: Feb 2008 Location: norcal(209) and socal(805) Posts: 691 Trader Rating: (6) Feedback Score: 6 reviews	^^^Isnt it the other way around??? Longer rod = less boost and shorter rod = more boost??? Or atleast thats how it is with my hks actuator, i think.

06-18-2009, 01:25 PM	#8
johngriff Post Whore! Join Date: Jun 2004 Location: Long Beach, CA Posts: 4,103 Trader Rating: (4) Rides Gallery: johngriff Feedback Score: 4 reviews	space the wastegate against the bracket w/washers __________________ [email protected]

06-18-2009, 03:40 PM	#10
slider2828 Post Whore! Join Date: Oct 2004 Location: San Francisco, CA Posts: 6,040 Trader Rating: (13) Feedback Score: 13 reviews	O crap you are right, its the opposite, forgot its a pull not a push! SHORTER IT IS!!! __________________ Turn and Burn!

06-18-2009, 07:00 PM	#11
godsmack Zilvia Addict Join Date: Feb 2009 Location: Allentown, PA Age: 39 Posts: 652 Trader Rating: (0) Feedback Score: 0 reviews	correct the shorter the rod the more boost you get. hks actuators are pretty cheap but i'd also get a boost gauge while you're at it. you have to adjust the hks and you don't want to be boosting to high with stock injectors if thats what you have.

06-18-2009, 07:21 PM	#12
slider2828 Post Whore! Join Date: Oct 2004 Location: San Francisco, CA Posts: 6,040 Trader Rating: (13) Feedback Score: 13 reviews	Yeah 1/4 turn at one time! __________________ Turn and Burn!

06-22-2009, 09:59 AM	#13
youngbrazee1 Leaky Injector Join Date: Apr 2008 Location: georgia/ soon to be tampa Age: 37 Posts: 74 Trader Rating: (0) Feedback Score: 0 reviews	i already have a boost gauge and 740cc injectors... so how do i shorten the rod...by cutting?

06-22-2009, 10:06 AM	#14
Razi Zilvia Addict Join Date: Apr 2007 Location: Corona Posts: 630 Trader Rating: (12) Feedback Score: 12 reviews	Or by putting washers against the wastegate brackets as Johngriff said. Or by getting a HKS wastegate You could cut it and weld it if you want I guess.

06-22-2009, 10:08 AM	#15
HYPNOTIK Zilvia Addict Join Date: Apr 2008 Location: Pisa, Italy Posts: 700 Trader Rating: (3) Feedback Score: 3 reviews	Yes, get out the hacksaw. LOL Are you serious? HKS ADJUSTABLE actuator, you turn the rod to lenghen or shorten it. __________________

06-22-2009, 10:41 AM	#16
Ashtony Join Date: Jun 2009 Location: hollywood Age: 43 Posts: 9 Trader Rating: (0) Feedback Score: 0 reviews	just the answers i was looking for. thanks guys