Quick Boost Solenoid Question

[Yeedogga]

Hi guys,

I remember seeing a post on here somewhere about this but I can't seem to find it- if someone can point me in the right direction I would appreciate it.

Wondering if anyone has run an R32 actuator (10psi) with the stock R33 boost solenoid earthed out and ended up with a stable 12psi?

Any experiences would be great.

Cheers

Chris

Edited September 16, 2009 by Yeedogga

[Coxie]

Yeah thats the kinda boost you'll be expecting with the r32 actuator. Did the same thing on my 33 except I just ditched the boost control solenoid completely instead of earthing it. Switching from my standard actuator to the r32 item put boost from around 8 psi up to around 11psi, this was with a front mount cooler and full 3" exhaust. I wouldn't want to push the stock turbo past 12 psi just to make sure you're not stressing the ceramic exhaust wheel too much.

[lachlanw]

with a front mount and exhaust upgrade a rb20det actuator will run 11-12 very stable . wouldnt add issues to it by having the solenoid aswell

[Yeedogga]

Thanks for the replies guys, but i should have been a bit clearer - I'm already running an R32 actuator and getting a rock solid 10psi at the moment with a FMIC/exhaust.

I was hoping to use the stock boost solenoid to switch between 10psi and 12psi. I don't want to run 12psi all the time but it would be good to have the car remapped on 12psi and then use that setting for when I need a bit more oomph.

[Coxie]

I think if you have the boost control solenoid operating it will start off runnin 5 psi until 4500 rpm and then the rating of the actuator, r33 being 7psi and r32 10psi from 4500rpm upwards. And the low boost setting isn't adjustable.

Correct me if i'm wrong if anyone has tried this?

[Yeedogga]

Well the low boost setting will be 10psi with the R32 actuator- regardless of whether the electronic solenoid is connected or not.

What I'm hoping to do is get the R33 solenoid to bleed off 2psi when it is earthed, giving me 12psi.

I guess I'll just have to try it out!!

Cheers

[HEKT1K]

any update on this?

i have an r32 actuator waiting to go on.. i will probably just ditch the stock solenoid though, don't want to run 12psi on the stock turbo.

[paulr33]

if you run the r32 actuator, then you dont need the solenoid, it's pointless

the r32 actuator will give you a prefect 12psi, whichi is about the max i would run on the r33 turbo

here are the spec of the std actuators

Use the air gun to blow compressed air approx A ~ B kgcm2 into the hose and make sure the swing valve controller rod operates.

where

HR32 - A = 0.8 and B = 0.9 kgcm2 which is 0.85kgcm2 (average) which is 12.08 psi

BNR32 A = 0.7 and B = 0.8kgmc2 which is 0.75kgcm2 (average) which is 10.66 psi

ECR33 manual is 385mmhg which is 7.4446 psi

ECR33 auto is 270mmhg which is 5.220 psi

BCNR33 A = 0.79kgcm2 and B = 0.85kgc2m which is 0.82kgcm2 (average) which is 11.6 psi

if someone can find ER34/BNR34 please let me know

[paulr33]

fyi ive been running 12psi on the stock r33 turbo for about 5 years now

220,000 kms and still goes fine, i got the car at 56,000 so its had over 100,000+ of 12psi

[HEKT1K]

cheers for that Paul i always thought the r32 actuator was rated to 10psi, i guess 12 won't be too bad.

i have just unplugged the solenoid and am going to hide the dangling plug bit under the airbox so it all looks nice and stock, easier than pulling everything out and blocking off hoses etc i think.

EDIT: in the process of taking out my current actuator.. can anyone point me in the right direction re: removing the pin at the turbo end? i don't want to damage anything.

thanks

[HEKT1K]

can anyone help me? sorry to be a pain

it looks like the rod is sort of clipped onto the turbine housing, reading around on other site it says to 'pop' this bit off.. but i'm a bit too cautious for that!

[JonnoHR31]

should be a circlip holding it on, pop the circlip off (dont lose it!) then slide the rod off the gate, unbolt the actuator then do the reverse for putting the rb20 one on

[HEKT1K]

awesome, thanks Jonno!

[datfreak]

Is this safe to do with the standard r33 intercooler?

[paulr33]

on a very quick short / run it might be ok

but after repeated loading up the stock core will be useless and wont perform

the end results would be excessive intake temps causing detonation

[datfreak]

would a r34 standard cooler be ok(the thicker one than the r33) or would a proper FMIC like a JJR returnflow one be the go?

[MrR33666]

r32 actuator with no boost control solenoid = 10psi

r32 actuator with boost control solenoid hooked up normal = 10psi and at 4500 rpm 12psi

r32 actuator with boost control solenoid hooked up and earthed out = 12psi

Edited January 29, 2010 by MrR33666

[paulr33]

no, that's incorrect

from the nissan service manual;

HR32 - A = 0.8 and B = 0.9 kgcm2 which is 0.85kgcm2 (average) which is 12.08 psi

so the minimum boost you can run when using the R32 actuator is 12psi

[HEKT1K]

that may be so paul, but when i did this i got just below 10psi with the solenoid unplugged, and almost 12psi with it plugged in

[paulr33]

thats what the factory specs say ...

i cant see it opening any less

its well known the R32 actuator gives you 12psi