Jump to content
SAU Community

Is There A Problem?

niran

By niran,
in Engines & Forced Induction

 Share

Recommended Posts

niran Proficient

niran

Posted
Posted

Hey every one.

I was reading through some of the topics on here on the VG30 single turbo and they all state that full boost kicks in at 2800-3200rpm.

However mine kicks in above 3500rpm-4000rpm. The car I have is a R32 with the stock RB20.

the mods i have are:

Front mount intercooler

Pod and CAI

VG30 plastic/ceramic wheel ball bearing turbo

3 inch exhaust

AVCR

Stock R32 ECU

I have uploaded a video so you can see the revs vs boost, it’s in bar, it hits about 0.85 bar. The VG30 also is using the standard rb20 turbo's actuator as everyone said the VG30 actuator is no good, hence the reason why it hits around 0.85 bars.

The link is : http://au.youtube.com/watch?v=TqtF4yWCAkU

i just wanted to know whether this is to laggy for the vg30 or is this ok?

Also what could be the reasons why it is so laggy? is there anything i should check to see whether something is restricting it, i also don’t feel much pull, after taking it to a workshop they said it should pull much more harder on boost.

Thanks every one.

niran

Link to comment
https://www.sau.com.au/forums/topic/250752-is-there-a-problem/
Share on other sites
niran Proficient

niran

Posted
  • Author
Posted
Yep, that's pretty much it buddy, smaller displacement motor so you have to rev it more to feed the turbo with exhaust gasses... You could always chuck in an RB25 :P

hey mate, that was my first idea, but then. the info i got where they said full boost was from 2800rpm-3200rpm they where all used in rb20's..

yer but isnt the rb25 a tad smaller then vg30? coz they say the rb25 and vg30 is litrely the same

and3_3 Proficient

and3_3

Posted
Posted
hey mate, that was my first idea, but then. the info i got where they said full boost was from 2800rpm-3200rpm they where all used in rb20's..

yer but isnt the rb25 a tad smaller then vg30? coz they say the rb25 and vg30 is litrely the same

Rb25 smaller than vg30??? Two different things dude.

Yer a collapsed cat converter can cause slower spool up, simple way to check is to take it off! Get your car on a hoist or some jacks and unbolt it (real easy like 4 bolts) If you can't see through it then your in trouble.

Where there other mods involved to get it spooling that fast on a rb20? Like an exhaust cam gear?

niran Proficient

niran

Posted
  • Author
Posted
Rb25 smaller than vg30??? Two different things dude.

Yer a collapsed cat converter can cause slower spool up, simple way to check is to take it off! Get your car on a hoist or some jacks and unbolt it (real easy like 4 bolts) If you can't see through it then your in trouble.

Where there other mods involved to get it spooling that fast on a rb20? Like an exhaust cam gear?

hey man oh really aite my bad.

um yer i will do that today arvo just been spending time with family for new years.

nah there wasnt any cam gear's on them but then agian they had retuned the ecu where mine is just a stock r32, so thats most likley why

thanks for the help niran

niran Proficient

niran

Posted
  • Author
Posted
A good electronic boost controller will also help the spool up and the consistency of the boost

yer i installed An AVCR last weekend, just getting the hang of it now, so ill keep playing around with it and get it all running sweet hopefully..

niran Proficient

niran

Posted
  • Author
Posted (edited)
Yeah if you dont have the AVC-R setup correctly you can have low boost in some areas etc.

Play around with Duty a bit and then setup the RPM specific settings (Bar Graph).

hey mate, thanks for that yer i shall keep trying with the avcr see if any can get the boost to come on any better.

niran

Edited by niran

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • OakvilleGTR
      Turn signal wiring question

      By OakvilleGTR · Posted

      Good morning all, Bit of a random question but figured I’d finally throw it out after wondering for a long while. Before I start, I'm hoping to do this purely out of personal preference. I think it would look better at night, and don't mind at all spending a few hours and dollars to get it done. I've copied this from a non-Skyline specific forum, so I apologize for the explanation of our headlight switch setup that we all know. Here we go: Zero lights (switch off) Parking lights (switch position 1) being a rectangular marker on the outside of the housing, my low beam being the projector in the centre (position 2), and a high beam triggered by my turn signal stalk. Most North American cars I’ve owned of this era have power to the amber corner (turning indicator) light as part of the first switch (parking lights). I’d love to have these amber corners receive power when the headlights and parking lights are on (headlight switch), yet still blink when using the turn signal which is of course a separate switch. Hopefully I’ve explained my question correctly. Is anyone aware of a way in which I might be able to achieve this? Thanks in advance
    • Kinkstaah
      Mistakes were made, my R34 Story

      By Kinkstaah · Posted

      My heads are cathedral port! It's likely possible, but I don't want to add any extra moving parts (I know they don't move) between the heads, manifolds, etc. It will also affect how injectors/fuel rails etc sit and I don't really know if it would change how the FAST manifold goes/sits/fits. I have the LS6 steam pipes already as I have a very late LS1 block so it should be fine. I couldn't find anyone who had ever actually used one for this purpose, it seems 100% of people grind the water pump. The thermal spacers are 12mm and are half way to the cost of the newer water pump anyhow... so if it comes to that I suppose I'd rather buy a new pump. The bearing in the pump I do have is a little.. clunky, but it hasn't done that much time and I never noticed it when the car was together in the past few years, so..
    • sonicii
      Lower A arm Skyline v35

      By sonicii · Posted

      The bushing has failed, not all that uncommon for a car of this age.  Any mechanic should be able to push in a new bushing for you, or you can probably buy the entire lower control arm, complete with bushes.
    • The Bogan
      Mistakes were made, my R34 Story

      By The Bogan · Posted

      Could you not use "thermal" spacers to give the clearance, like the ones I used between the blower and head? That raised the manifold height by around 10-15mm Albeit the ones I used were for cathedral ports, but I assume they have similar for rectangular ports????
    • Red Sky II
      Looking for autoelectrician in Perth who can do the OEM to double din stereo upgrade.

      By Red Sky II · Posted

      Thanks Paul I reached out to Autotainment but they no longer work on JDM cars as the guy who used to do the work moved on and is no longer doing that kind of work. I am talking with Level Up Audio though.
×
×
  • Create New...