Jump to content
SAU Community

Turbo Upgrade for a rb25det

Bo0sT_JuNkY

By Bo0sT_JuNkY,
in Engines & Forced Induction

 Share

Recommended Posts

Steve Grand Master

Steve

Posted
Posted

R33 turbos are built by hitachi I think, they have a t3 flange with internals about the size of a t28 but are neither t28 or t3. I have also heard that the compressor wheels on R34 turbos are acutally nylon! This info is from letter written by HPI in response to similar questions ask as you have, and the response was posted on this forum somewhere, or it might have been SDU?

macka Veteran

macka

Posted
Posted

I dont recomend running more than 1bar on standard RB25DET due to its high compression ratio!

Hiflowing your standard turbo can be reliable and PROVEN horsepower gainer without any other turbo mods...Providing you find someone that can Build u a good quality hiflo unit just dont ask me........:eek:

TTT Grand Master

TTT

Posted
Posted
Im sure that the rear wheel is ceramic,Just the front wheel is titanium.Also ive heard some ppl say that r33 turbo's are t28 and other ppl say there t3 ,then ive heard t3 with t28 internals! Can anybody clean the issue up?

The RB25DET from the R33 and the RB20DET from the R32 GTST have a Bolt pattern which is the same as a Garrett T3. Therefore it is known by the public as a T3.

However, the internals are about the same size as that found in a Garrett T28.

So the turbo on your R33 can be replaced with another turbo which has a T3 bolt pattern (flange)

There are 100's of different spec turbos that could be called a T3 but the internals are going to be different from one another so you have to be specific on compressor trim and A/R numbers and so on to identify them properly.

The turbo's on the R34GTT are once again T3 bolt pattern.

The inlet (compressor)blades are made out of a NYLON material of some sort but the exhaust wheel is still ceramic like all the ones before it.

To be able to run like 1 - 1.5 Bar of boost on any standard skyline engine is going to cause issues.. it would definitly have to be a turbo with steel wheels and I don't think that this is going to be CHEAP as you want it to be.

The R33 turbo rebuild is a good idea.. probably still cost over $1000 though.

Mark0 Proficient

Mark0

Posted
Posted

yer i dunno what to put on though

a gt series id say ... but i got to research it more i would like to keep the t3 bolt on pattern so i dont need a new manifold.

there was one that chip torque mentioned to me yesterday but i cant remember what model it bolted straight on and dont need external wastegate

meggala Grand Master

meggala

Posted
Posted

you cana also get a t3 mark the hiflowed stock turbo's from gcg in sydney should do the job you want they come in either ballbearing or non ballbearing the latter being cheaper and are rated at 450 @ the flywheel. you have the set up to cope with this I would go for either the stage one or stage 2 it bolts straight up with no fiddling which can cause issues with some of the other off the shelf new turbo's and it still retains the internal waste gate. a hiflow t3/4 is also an option and can be gotten band new. you would want some thing with a 55 mm compressor wheel andsimilar sized exhaust wheel you could go up to 60mm as well but it would be a bit laggier.

meggala

glad to see your finally getting to this stage. cause you ahve done all the preliminary work

macka Veteran

macka

Posted
Posted
Originally posted by Mark0

hrmm got to weigh up if it is wrth spending that much on high flow or just get a new turbo for 2500

What turbo for 2500?

A new OEM Nissan ? then u get no power increase..

GT type BB turbo? then you will need new oil and water lines new Dump pipe and Adapter/spacer for the Giant compressor cover so it doesnt hit the Manifold.

I wanted to go a GT25/30 but it worked out to be $5000 including an Upper steampipe manifold which i thought was a bit much ;)

Bo0sT_JuNkY Community Regular

Bo0sT_JuNkY

Posted
  • Author
Posted

well i think i might keep use my cash to put in a 5sp.I Didnt think it would have been that exspensive for a upgrade.Aleast with a manual i can have some fun drifting!!!Its a **** drifting in auto and puts heaps of stress on the box.Someday ill have a T66 sitting under my bonnet ,but not for a while ;)

Joe Community Regular

Joe

Posted
Posted

HKS GT2530 or HKS GT2540 would be a nice conversion (depending on how much power you want to make)

You can either get a T3 or a T2 flange on them T3 is what you want tho, & it will bolt into the manifold easily, im not sure about clearning everything but i cant see that being a big hassle since its not that big of a turbo.

I wanted to go a GT25/30 but it worked out to be $5000 including an Upper steampipe manifold which i thought was a bit much

Why would it be $5000?

I have heard people fitting a 2530 stirhgt into there factory manifold with no problems at all but the oil lines which dont cost more then $100-200 if that! & the turbo are an internal gate turbos.

macka Veteran

macka

Posted
Posted

Ohh..

Sorry that was the price for GT30 with Ext gate your right......

The GT25/30 im referring to is the garrett unit with gt30 comp wheel but with the .70 comp cover it hits the exhaust manifold apparantly.

In that case u will need Turbo, new manifold, New Dump pipe, new oil and water lines new inlet and outlet piping on Compressor..

So i just opted to keep the Standard exhaust housing with a t4 front end so all i had to change was the wastegate brackets and both inlet and outlet of the t4 compressor, havent started it yet hopefully finished tonight :cool:

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

    • PLYNX
      R32 GTR EV? The leaf of the Godzilla's!

      By PLYNX · Posted

      And at over $2 per litre I'm starting to consider setting up a corn mash still and converting over to alcohol and running mine on it !  Up side of that is it all doesn't have to go into the car ! Win win !
    • GTSBoy
      R32 GTR EV? The leaf of the Godzilla's!

      By GTSBoy · Posted

      H2 (for cars) will never happen. It's not reasonable for any number of reasons. It's also not reasonable for almost all of the industrial uses that the fanbois say that it will be used for, again for a large number of reasons. There are some cases where it will be good. But, even those will be massively hampered by the economics. The only way that H2 can be economic is if we somehow manage to get from where we are to the other side of the economic-valley-of-death in which no-one can operate. You need there to be sufficient renewable generated electricity to be available so that it is effectively free. Once you are there, you can do whatever the hell you want and hang the efficiency. But until you get there, the ever diminishing value of electricity makes it harder and harder to encourage businesses to build the new generation capacity, and they will simply stop investing in generation projects. (I kinda think there needs to be just government money spent on building the required capacity in a non-commercial way, similar to how the first fossil fueled grids were built, as national-government owned utilities. And probably some nuclear in there to start. But this all should have started 10-15 years ago to avoid the chasm of death that we face right now). Synth fuels will be much more likely, but will only occur is there is at least some renewable H2 production, because you need H2 to do it. And you need stacks of free (or at least extraordinarily cheap) energy because assembling molecules back into fuels is exactly the opposite process to burning the fuel, and the reason we burn fuels is because there is so much energy squeezed into each molecule. So you're somewhat subject to the same economic valley of death problem as above anyway. That is unless people are willing to pay the current equivalent of $5 or $6 per litre of petrol-ish liquid fuels. Can you imagine it? The squealing at $2 now is bad enough.
    • PranK
      R34 "maintenance reminder lights" and mysterious voice

      By PranK · Posted

      This is so cool. Get a dashcam that records audio and hopefully you'll catch it.  Maybe there's a brand or some kind of markings on the back ? Are the pics hand drawn? I love it so much.
    • PranK
      R32 GTR EV? The leaf of the Godzilla's!

      By PranK · Posted

      Hahaha yep, point(s) taken. I just like seeing different things and an EV in an R32 is pretty different. I'm not on the EV band wagon, I'm waiting for synthetic fuels or hydrogen personally. 
    • PranK
      Use text replace function to auto-link to referred threads?

      By PranK · Posted

      No, only I do the disciplining.
×
×
  • Create New...