Jump to content
SAU Community

Rb25 T3 Turbo Rebuild

matthewcucuzza
 Share

Recommended Posts

matthewcucuzza Rookie

matthewcucuzza

Posted
Posted

I purchased a few parts today for my turbo setup which included a std rb25 turbo which is blown. im wondering where in sydney i can get it rebuilt or where to buy the billet wheels for them? i cant seem to find them i can only find the garrett turbo rebuild kits.

Link to comment
https://www.sau.com.au/forums/topic/446655-rb25-t3-turbo-rebuild/
Share on other sites
GTSBoy Grand Master

GTSBoy

Posted
Posted

You could search on here. I know for a fact that hypergear has posted the answer to that very question in just the last few months. The reality is that almost nobody wants a "rebuild", because why would you rebuild for ~$500 when you can get it massively highflowed for ~$800?

discopotato03 Grand Master

discopotato03

Posted
Posted

The ceramic RB turbos were intended to be throwaways meaning no factory (Nissan) rebuild option .

The ceramic turbos are not really suitable for an RB30 because they are too small on the hot side , better off high flowing the standard RB30ET T3 turbo given a choice .

Long story short Nissan used Hitachi ceramic turbine ball bearing cartridges or centre sections in RB20/25/VG30 turbos and like with earlier T3 turbocharged Nissans provided their own housings - hence "NISSAN MOTOR" cast into them .

RB30s even the single cam ones make more low down torque than RB20 or 25 so turboing is easier , don't need small turbos to pull up the bottom end torque - especially in a lightish VL sedan .

You can probably even skip ball bearing turbo centres for an RB30 provided the turbo isn't too big .

Rebuilds . The simplest fix is to buy a new cartridge for a turbo if the housings haven't been hacked up by damaged exploding wheels provided cartridges are available . Basically remove the housings from the old and refit to the new and you have essentially a new turbocharger .

Hypergear would be good to talk to because they hi flow lots of turbos many which have Nissan or alternative housings on them . Basically the old Garrett small shaft T3/T4 centre section is very similar dimensionally to the Hitachi ones so with a bit of machining and re profiling of the housings to suit different turbines and compressors you can make a package that looks and fits much like the standard turbos . I think even the water banjo thread sizes are the same .

I know people new to turbos think any centre section can be rebuilt but the problem is that the bearing housing itself is a wearing part in all of them inc the ball bearing ones . Sadly the turbines piston ring seal spins in the back of the housing at considerable speeds and eventually chews it out . It the turbine shaft has any significant wear replacing the turbine and centre gets exy and for the effort buying a replacement ready to run cartridge makes things quick and easy .

That T3/T4 centre is a true broad minded person amongst turbos and a huge range of compressors and turbines can be made to fit them . Hypergear has gone further with them than anyone I know of in Australia and has made many unique wheels to dial them in . Constant development is a great thing .

If you tell them exactly what you like and hate I'm sure they can brew up something that won't cost multiple thousands .

A .

  • Like 1

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

    • joshuaho96
      Removing Charcoal Canister

      By joshuaho96 · Posted

      People think it's a waste of space, ugly, etc, generally associate "emissions control equipment" with "bad". These OBD1 vacuum-only systems I'm not a huge fan because I think they don't go far enough. They're wasting some of the fuel captured because they start purging as soon as the engine pulls vacuum. Later OBD1/OBD2 they put an electric purge valve on them to vent only when closed loop is active so the ECU will trim some fuel out. Even later OBD2 with zero evaporative loss the tank is 100% sealed from atmosphere until you run the engine or press the refuel door release. The tank has to take much higher vacuum/pressure spec but you never deal with saturating the charcoal canister and losing some fuel that way. The fuel also lasts as long as it would in a 100% airtight container which is nice when you're dealing with modern E10 pump gas.
    • joshuaho96
      Purchase new air conditioning condenser, and receiver / drier

      By joshuaho96 · Posted

      If your luck is anything like mine, what happens is in the process of pulling hoses to get access to the one leak you create many more leaks because every o-ring was on the verge of failing and the strain of pulling it apart caused it to fail. Sometimes life is simple, sometimes you pay twice trying to save once. For the R33 you can still get most AC components from Nissan, I use nissan epc data or amayama to look up the part numbers and then search for the cheapest/most practical way of sourcing from there.
    • joshuaho96
      Boxes of oil?

      By joshuaho96 · Posted

      The dirty secret is there is nothing recyclable about the plastic bag or old plastic bottles either. Our local trash collection explicitly calls it out as hazmat in both cases. Oil-soaked rags + paper towels too. Oil-soaked cardboard is also not recyclable. The most common case of oil-soaked paper like that is pizza boxes, which are explicitly compost-only from the oil. To my knowledge hazmat oil contaminated plastic the only solution is either landfill or "thermal recycling". Most plastics in my experience there is slow permeation of the oil it's holding into the container so it's very challenging to get it 100% clean.
    • GTSBoy
      Import insurance in 2025

      By GTSBoy · Posted

      Yes, and since RAA insurance essentially being swallowed up by the same monster that is NRMA insurance and all those other clowns, they are no bloody good now either. We dropped RAA insurance for the house a little while back because they lost the plot.
    • MBS206
      Import insurance in 2025

      By MBS206 · Posted

      I can tell you now, good luck if you're with NRMA (NSW equiv of vis RACV and QLD RACQ). Because NRMA are freaking horrendous to deal with for claims, even with a normal road car. Not to mention even more BS when they're in the wrong and didn't cancel a policy etc when they were meant to and make you jump through hoops for things.
×
×
  • Create New...