Jump to content
SAU Community

What To Do?

Kruges

By Kruges,
in Engines & Forced Induction

 Share

Recommended Posts

Kruges Explorer

Kruges

Posted
Posted

Hey all, just after some advice with a turbo centre ive aquired. im changing my turbo on my rb20 in my r32 from the kkr style turbo thats in it now to something more responsive. I have already purchased an r34 gtt turbo with the op6 housing that i will be using in the mean time, however i have a garrett centre part number, 466541-4. or more commonly know as a gt2560r/gt28r. anyone know what housing i need for this centre? is it possible to use the housings on the r34 turbo? maybe another housing? any help will be much appriciated as im new to playing with turbos.

cheers, sam

Link to comment
https://www.sau.com.au/forums/topic/330118-what-to-do/
Share on other sites
hypergear Grand Master

hypergear

Posted
Posted

We can machine your OP6 housings to suit a Garrett GT2860RS Disco core which makes it very similar to a HKS2530. Would max around 220rwkws with plenty of response on road. Since its a .63 rear you also might want to use a 52T GT2871R CHRA, which gives that little bit of extra power and torque.

Link to comment
https://www.sau.com.au/forums/topic/330118-what-to-do/#findComment-5363063
Share on other sites
discopotato03 Grand Master

discopotato03

Posted
Posted

Most people find the BB VG30 turbo laggy on RB20's mainly because its turbine housing is intended for an engine half as big again and its not like your going to rev an RB20 50% higher .

Also note that Nissan used that larger Hitachi turbine housing on RB25 Neo's but they had a more sophisticated variable cam drive system (than R33s) to help keep the dynamic compression ratio up at low revs .

As far as I know RB20s didn't get VCT so using a large turbine housing is going to make the turbo pretty lazy on them .

As I mentioned elsewhere I think a re-machined Hitach RB25's turbine housing , which is a little larger internally than the RB20s one would give a bit more flow area and allow you to make a bit more power without excessive turbo lag .

BTW I KNOW the 25 housing is a little larger than a 20's one because I have all three sizes here and measured them internally .

They don't look a whole lot different but they are and I know it to be fact .

RB25 turbo bits are common and cheap so I'd use an RB25 housing as a first try . Its the next size up from what you have and has the best chance of not being a laggy pig on a two liter six cylinder .

Your call , cheers A .

Link to comment
https://www.sau.com.au/forums/topic/330118-what-to-do/#findComment-5363285
Share on other sites
Kruges Explorer

Kruges

Posted
  • Author
Posted

so with all this in mind, if i was to send my rb25 op6 housings to be machined to fit the 466541-4 would it be a worthwhile upgrade for my rb20 or would i be better off keeping with just the standard rb25 turbo. my main concern is that ive been told that the rb25 turbo still has the ceramic turbine wheel. sorry for all the questions.

Link to comment
https://www.sau.com.au/forums/topic/330118-what-to-do/#findComment-5363458
Share on other sites

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

    • Marek
      Hi everyone.

      By Marek · Posted

      Haha, i kow right? Could have bought so many cars for the same amount of money (or less) but driving Unicorn gives you at least +1mln to style 😅. Like wise man said "life's to short to drink cheap wine and drive boring cars" 😉
    • ARB26
      S1 Autech 260RS Wiring Diagrams

      By ARB26 · Posted

      Newbie here, proud owner of an Autech 260RS. I'm on the hunt for wiring diagrams specific to the 260RS, particularly S1. I've ran my eyes through R33, R34 Diagrams, there are some similarities, however continue to find incorrect wire colours and pins on connectors in the 33,34 diagrams.   I was hoping someone could point me in the right direction? I'd be happy to pay for the originals in Japanese. I can translate them, at least they would be accurate.   Any help please would be greatly appreciated, never heard an RB26DETT before let alone driven one, and I've got a spaghetti monster of goodness to sort out.   Cheers Benny  
    • DanMac34
      R34 Speedo not working after manual swap

      By DanMac34 · Posted

      Hey all  im wondering if you can help me please I have put a rb20 box in my r34 gtt as my auto packed up and a friend had a spare box I know it’s not ideal but it will get me up and running for now. we have done the conversation and everything is working great but my Speedo we got a s13 speed sensor but my Speedo reads double now and I bought a speed converter but still not having any luck.  so I thought I’ll reach out and pick your brains  any help would be appreciated please as I wanna drive my car again 
    • joshuaho96
      Speed Sensor replacement

      By joshuaho96 · Posted

      Drain it. I got official Matic D but you can get whatever is listed as Matic D compatible.
    • QB6SAGR
      Tein Circuit Master- rebuild worth it?

      By QB6SAGR · Posted

      Thanks guys,  Yeah I should at least have them dynoed, at least then I know what I've got as a starting point.  The springs on these are hard as rocks. I vaguely remember Russman saying he was going to sell the shocks to me with the rocks fitted, as he was keeping the softer springs for his new setup.  I didn't click at the time but of course that was to let me know the shock/spring wouldn't be matched.  I also remember pricing up new springs around 2014-15, but, house, money etc. it never happened. So that was another reason to have them rebuilt. I have rebuilt the forks on many motorcycles so I think I could handle the seals on these easily enough, but getting the valving right would be a rabbit hole I cbf exploring.  Duncan, interesting to hear RP was tuning these back then. I might give them a call.  In the mean time I have been busy fitting sway bars. The Whiteline rear sway bar I purchased 15 years ago finally got fitted, along with the Whiteline front bar that showed up last week. Just waiting on new links for the front sway bar to finish that off.  And my spare set of advan AVS VS5's should be back from the powder coaters in a Pearl White finish sometime this week, with a set of Hankook RS4's lined up for fitting.  And then I just have all the suspension bushes to do. A comprehensive kit is on the way... Lots to do before the Ararat hill climb. Cheers guys 🍻   
×
×
  • Create New...