Jump to content
SAU Community

VG30 installation onto RB20 help

Cool Hand Luke
 Share

Recommended Posts

Cool Hand Luke Community Regular

Cool Hand Luke

Posted
Posted

Im going to go and buy a fairly low KM single turbo VG30 turbo on monday for $450 (to put on my rb20). What mods need to be done, at the moment i have a turbo back exhaust with a seperate dump, will i need to get a new dump pipe made up? Thats my biggest concern. Also does this turbo have a ceramic or steel exhaust wheel? And what else do i need to do to fit it on? What is the max boost i can run with it?

Link to comment
https://www.sau.com.au/forums/topic/19816-vg30-installation-onto-rb20-help/
Share on other sites
lowlux Proficient

lowlux

Posted
Posted

u have to find out yourself if its got ceramic wheels or not,cause theres both in the vg30turbo range, Max boost id say around the 16psi mark with some good tuning and a fmic, but i rekon the turbo could take a little extra 2-3psi for short little bursts. And yes if u dont get the dump pipe with the turbo then you will have to get a dump pipe and your front pipe changed to suit, but if u get the dump with it,any exaust shop will be able to cut and shut a new flange to suit the new vg30 dump pipe. Also u might have to get some Bundi pipe and some fittings from a Hose/Hydraulic store :) hope that helps

Cubes Grand Master

Cubes

Posted
Posted

The VG30 with good tuning should be ok for up to 1.2bar.

I think they all have ceramic exhaust wheels unless you go for a really old school VG30ET turbo.

I had a VG30DET turbo that was ball bearing and ceramic. It was definately a lot less responsive than the standard turbo and made full boost around 4000rpm.

I wasn't happy with it as it felt slower than the standard RB20DET turbo running 16psi so I pulled it back off.

Sure it rev'd a bit better up over 6000rpm but getting there was a bit slower.

It also felt like I really had to give it heaps of shit just to hit boost in first gear, so basically expect to have almost no boost in first.

  • 5 months later...
Cubes Grand Master

Cubes

Posted
Posted

Stick with the RB25 turbo on the RB25. The VG turbo isn't as good as the RB25 turbo. The VG has a smaller compressor so it is a step backwards.

TO be honest I would buy a RB20 turbo over a vg30 for the street. The VG is to laggy.

T0nyGTSt Grand Master

T0nyGTSt

Posted
Posted
Stick with the RB25 turbo on the RB25. The VG turbo isn't as good as the RB25 turbo. The VG has a smaller compressor so it is a step backwards.

TO be honest I would buy a RB20 turbo over a vg30 for the street. The VG is to laggy.

That's good to know.

I wanted to stick a VG30 on my RB25 but it seems I can only get the roller bearing models.

May as well stick with the RB25 if it's laggier.

T.

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

    • 25RBGT
      Got this r31 silhouette flood car to rebuild.

      By 25RBGT · Posted

      So we have most the interior back in, and for the first time with one OEM speaker hooked up. The 31 is running, driving and now tunes!!! Hahaha yet another step for the sub that sat 10m under for two weeks!!! unbelievable really 👌 lots of love work and not giving up on her. Seen so many youngsters part way less, and in way better condition. I’m stubborn, thinking another problem is just a hurdle to overcome, One at a time. IMG_9277.mov
    • TurboTapin
      CD009 RB Conversion

      By TurboTapin · Posted

      That is correct. I'm using a modified ABS ring and a ZF speed sensor on my rear diff for speed input. I'm running a Haltech ecu. 
    • TurboTapin
      R32 GTST - 600KW+ RB28/CD009 Build

      By TurboTapin · Posted

      Been busy with the newborn. We originally thought we were going to go for a third, but we're good with two lol. He's starting to actually sleep now so I've had some energy to work on the car. It's been parked away in the garage since late November due to winter.  I went ahead and redid all my head oil drains. I originally had my front and rear head drain going into the same pipe but have since split them up. I also added an Ethanol content sensor to get ready to run E85 this summer. Tossed it on my return line. Sensor sits nicely under my intake manifold.    I also have a lot of parts that came in for my rear end. I'll be swapping over to a 3.3 final drive and doing the GK teck anti squat mod. While the rear subframe is off, I'll also change every bushing. We're planning on buying another house soon with the condition that I get at a minimum a 2 door garage, so I'll wait to have more room for this. Now onto the strange things that recently happened... After changing the lower rad hose (It had been sitting in my cabinet for well over a year and was the last hose I had to replace), I let the car idle in the garage to bleed my coolant. After running for a few minutes, it started missing. Got much worst within a minute or two and then stalled and would not restart. My crank sensor decided to crap itself. No damage, no explanation, just died. I went ahead and replaced it with another ZF sensor but the heavier duty stainless model with a shield. Tossed that in and started right up. Has anyone else seen this? I hate when things fail without cause. Luckily this was a blessing in disguise... This lead me to recheck my timing. It seems I may have had a beer or two the last time I had set my TDC angle as I was off exactly 5 degrees... I miscounted a line haha. I was running 5 degrees less then commanded. It's a little embarrassing but helps explain why my dyno operator seemed to think I should be making more then 478rwkws.        
    • hypergear
      Hypergear Turbochargers and High flow Services Development thread

      By hypergear · Posted

      Sharing results from recent Liberty Walk R35 GTR, since they are still considered as somesort of a V36 Skyline. We do them turbos too. This are high flowed SS-1 models with ball bearing conversion done.  Car have managed to pull 485awkws @ 20Psi so far pushing limitations of factory built engine. The build list for R35 GTR enthusiasts as follow : HyperGear high flowed stock turbos in SS1 (G25-660 specs) Custom titanium intake pipes. Vspec performance titanium front pipes. Vspec performance 4" titanium exhaust. Upgrade fuel pumps. 1200cc injectors. Ignition coilpacks Hks intake plenum. Hks intercooler piping. Greddy intercooler. Greddy bovs. Top-secret coolant reservoir. Emtron ecu. Straight E85. Built gear box.  
    • Shoota_77
      Shoota's R33 GT-R RB30/26

      By Shoota_77 · Posted

      Nah no bearings, just slip fit.  Would be a reasonably challenging but not impossible job to modify it to run bearings but I'm hoping that's not necessary as I may have well built one myself if I end up spending hours modifying it!
×
×
  • Create New...