Jump to content
SAU Community

Garrett 2860-5 Max Spool

CU's GTR

By CU's GTR,
in Engines & Forced Induction

 Share

Recommended Posts

CU's GTR Contributor

CU's GTR

Posted
Posted (edited)

I have a Gtr r33 and looking to install the Garrett-5's. Installed already is the air intake and 3inch exhaust with a sports cat. What I will be installing with the turbos are: 1125cc Bosch injectors, tomei cams and camshaft, tomei dump pipes. My question is what the max spool on these turbos with the mentioned mods? (What RMP when full boost kicks in?)

What I would like to know if anyone has installed these on their Gtr r33 and their thoughts on this?

Wanting to use this on the street and track...

Thanks.

Edited by CU's GTR
Link to comment
https://www.sau.com.au/forums/topic/465154-garrett-2860-5-max-spool/
Share on other sites
CU's GTR Contributor

CU's GTR

Posted
  • Author
Posted

The fuel will be premium fuel (98). Boost level is unsure of at the moment. If possible 1.5 bar. I've looked through forums but most talk about kw at the wheels. Not to concerned on that. I expect to produce somewhere between 300-350 kw at all wheels. Current set up is producing 240kw at the wheels.

I just want to ensure the right turbo is use for and not too much lag. If full boost is around 3500rpms this would be fine.

baicai Community Regular

baicai

Posted
Posted

On stock engine and cams, -5 max spools at around 5000 rpm, with bigger intercooler, dumps etc max spool at 4500 rpm, unsure about cams(depends which one). I think it would be hard to get max spool at 3500 rpm with -5 on rb26, maybe able to bring it down to 4000 rpm if you get hard pipes everything and bigger exhaust like piggaz said.

baicai Community Regular

baicai

Posted
Posted

The fuel will be premium fuel (98). Boost level is unsure of at the moment. If possible 1.5 bar. I've looked through forums but most talk about kw at the wheels. Not to concerned on that. I expect to produce somewhere between 300-350 kw at all wheels. Current set up is producing 240kw at the wheels.

I just want to ensure the right turbo is use for and not too much lag. If full boost is around 3500rpms this would be fine.

For 300-350 kw atw better off going with -9 and e85, it will be less laggy than -5. With -5 you will eventually need to go to 400kw to make sense.
r32-25t Grand Master

r32-25t

Posted
Posted

Your never going to see full boost at 3500 with -5s it doesn't matter what you do

To get the best out of them tho

-Big exhaust and dumps (twin 3in into 3.5 minimum)

-Cam gears (no cams they send you backwards)

-Bigger and better intercooler (not an eBay Chinese special)

-E85 (makes a huge difference)

*increase your capacity (stroker or etc)

*vcam or the otomoto veriable cam system

The ones with the - should be on your list no matter what the * are if you can afford it, but a car with the entire list would be a weapon

  • Like 1
r32-25t Grand Master

r32-25t

Posted
Posted

For 300-350 kw atw better off going with -9 and e85, it will be less laggy than -5. With -5 you will eventually need to go to 400kw to make sense.

but this is a better idea, my car with the stock engine and -7s makes 348kw on e85 and has fantastic response
  • Like 1
CU's GTR Contributor

CU's GTR

Posted
  • Author
Posted

R32-25t, my concern with e85 is the availability of petrol stations around. Are you from melb and if so have you found it difficult for filling up for weekend drives?

Originally I opted for the -7, from what you have mentioned may relook at the -7's.

r32-25t Grand Master

r32-25t

Posted
Posted

Looking at the specs on the intercooler on the GTR R33's is rated up to 450kw? Would you still change them?

ive still got the standard one in mine but we have seen proven gains right through the rev range from changing them

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

    • nash47
      Cas issue

      By nash47 · Posted

      Hello , im new here and i have A31 home build  RB25det neo stock eng / turbo  aem ems 2 blue connector  aem 3.5 map aem cas disk aem wideband connected to ecu  355 lph pump 550 nismo yellow injectors side feed aftermarket regulator  and won’t start with base aem tuner basic tune eventually flipped cas 180 degree so it triggers on correct stroke not in exhaust cycle  Now it won’t start Wideband reads 10 and 11 at lowest fuel setting  and will share calibrations soon for aem tuner i think something is wrong in aem tuner    please if you have any information, am very grateful         
    • nxh
      R34 4 door side skirt identification

      By nxh · Posted

      Legend. I ended up finding the facebook account of the owner of the first car i sent but sadly he deactivated the account. I think you’re right in saying it’s some sort of well done custom job. Really appreciate your help anyways.
    • GTSBoy
      boost source Size Garrett gt28 gen2

      By GTSBoy · Posted

      Totally equivalent. Stock often goes from the comp cover because that's where the actuator is also installed and the factory needs 2" of hose to make the connection - and it comes as a pre-assembled unit. They totally have a boost reference from somewhere between the turbo and the throttle(s). Oh, jeez. Just do it in M12 then. We don't actually care that much. I would expect any such AN converter fitting to rely on an o-ring or some other seal onto a flat surface under the flange of the hex**, because bolt threads are no intended to provide a pressure seal. unlike..... pipe threads. **which also requires a suitably flat and smooth surface on the turbo's boss to provide the seal.
    • timmy94
      boost source Size Garrett gt28 gen2

      By timmy94 · Posted

      I also used NP   That’s were it’s seems to be the best place to fit it? All schematic shows also that it’s should be referenced from the turbo housing. But idk, I do see high hp cars without any connection or anything to their turbos, so I really don’t know how they connect their things
    • timmy94
      boost source Size Garrett gt28 gen2

      By timmy94 · Posted

      I do have loctite 243 and 246 and a few more models. I could drill it now in place and make new threads for m12 and order an4 - m12 coupling and fit that to the turbo. Run a braided hose to the EBC which I could get a an4 to 1/8npt 
×
×
  • Create New...