Jump to content
SAU Community

Recommended Posts

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

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

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?

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

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..

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


  • Similar Content

  • Latest Posts

    • This looks great! Awesome to have the 5 speed with an LSD in this. The Recaro's look like SR2's or SR3's. It's a shame they've been retrimmed as they would have looked sweet in their original colours. I think I'd want my agent to be a little more up front and informative too. I've never imported but I reckon it would make me a little nervous, so the more info the better.
    • Thanks for doing that Duncan! Makes you a good person in my books. We don't get kangaroos or wombats here. But we have bats and it's similar. AFAIK it's often the mums with a baby attached that get hit because they drop lower when starting from a tree. If you hit an animal, check on it. https://www.ifaw.org/au/resources/wildlife-rescue-app An app to get the closest wildlife rescue contact.
    • My dream is also to have a proper hoist, but I don't think it will ever happen. My quickjack is probably as close as I'll ever get, it really is very good though. 
    • Yeah we keep on in the dailies, it is pretty poor how many animals get hit and the driver leaves without checking....have saved a couple of little ones over the years. Bit of a gruesome job though, pouches generally need to be cut open because they are so tight and often the joey doesn't realise mum is gone so they are still locked onto the teat. I checked the modules in front of the DS wheel where an oil cooler should go.... There is the radar unit - that can go for race use) One of the 2 HX water pumps, the silver cylinder. That needs to be kept but might be able to be relocated But the bad news, the big computer mounted vertically in front of the wheel (blocking any potential air exit) is the electric steering computer. That is required until/unless i do a hydraulic steering conversion, and in CAD based modern car design it is not like I can just pop a big unit like that somewhere else (plus the loom would be too short anywhere else too). So, the passenger side is OK to clear out (just use a smaller washer reservoir, potentially elsewhere), but the DS no beuno
    • Well, all the best with the new camry It was interesting to hear about the UK process, it is generally a lot more streamlined here with a shipping agent looking after all the import side (noting the exact final price can still be a surprise.....) and I've used a few different brokers on the japan (or US) side, and never had any trouble with any of them....luck of the draw I guess. You mentioned you didn't get the auction sheet (understandable since you bought it from a dealer, not auction), but I always try and get hold of that because they are pretty thorough. I've imported 2x R grade vehicles over the years and both were fine, repairs in Japan are pretty thorough compared to here in Oz.
×
×
  • Create New...