Jump to content
SAU Community

Hks Rb28 Build Update

SLY33

By SLY33,
in Engines & Forced Induction

 Share

Recommended Posts

DCIEVE Mentor

DCIEVE

Posted
Posted (edited)

be interesting to see your results, a mate fitted the 650 to his 1j and the claims of 30% better spool than an equivalent garrett didnt pan out, she is extremely laggy (5000rpm?) but that being said the car makes alot more power than it did with a .63 reared gt35 on the same boost (440 to 480rwhp)

whatever you do dont damage it, waiting time on replacement parts for the turbo is in the 2-3month range

Edited by DCIEVE
  • Replies 66
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Kranker Collaborator

Kranker

Posted
Posted

Nice engine SLY33, ex maniforl is a work of art!

Just a quick question though (provided its not top secret info):

What cams are you running in that purple beast?

Good luck on the engine dyno! Im sure she'll pull out some serious numbers once run in!

SLY33 Mentor

SLY33

Posted
  • Author
Posted (edited)

cheers guys.

the engine dyno im using is currently apart for some maintenance. im hoping to get it run in/tuned as soon as its back together.

Cams are Jun 272's. It will be interesting to see how this thing drives, everything about it has become more focussed on top end flow, rather than response. The only drivability/response component in its favour is the 2.8litre stroker crank! There was going to be a 6 throttle nismo plenum to help with the response, but that got put aside for the all-out hypertune manifold.

All i want of this build is to have a bit of a scare when i find enough road to put the foot down. If i want a good responsive package and some tail out fun, well thats what the GTS-t is for :miner:

(for those that were interested in the extrude honed stock manifold results on my GTS-t, it should hopefully be on and tuned in a couple of weeks, will post the results)

Edited by SLY33
Lithium Grand Master

Lithium

Posted
Posted
the engine dyno im using is currently apart for some maintenance. im hoping to get it run in/tuned as soon as its back together.

Cams are Jun 272's. It will be interesting to see how this thing drives, everything about it has become more focussed on top end flow, rather than response. The only drivability/response component in its favour is the 2.8litre stroker crank! There was going to be a 6 throttle nismo plenum to help with the response, but that got put aside for the all-out hypertune manifold.

All i want of this build is to have a bit of a scare when i find enough road to put the foot down. If i want a good responsive package and some tail out fun, well thats what the GTS-t is for :stupid:

Very nice - look forward to seeing how this comes out. Are 272s big enough for an 850hp odd turbo?

  • 2 weeks later...
  • 6 months later...
  • 3 months later...
SLY33 Mentor

SLY33

Posted
  • Author
Posted

So far it made 760HP @flywheel at 24psi. Would have liked an even 800 but i guess its more than enough as it is.

its going back in the car now, will try get some pics up. Will be interesting to see how the rwkw reading will translate back to the flywheel reading once its done.

SLY33 Mentor

SLY33

Posted
  • Author
Posted (edited)

is there gonna be a significant difference at the end of the day with a x-force vs another?

I just used what the engine builder rec'd, he reckons it will do the job..

btw fuel is 98 pump plus 10% methanol

But yeah she looks pretty laggy! Goes something like this, 4000rpm 200HP, 5000rpm 300HP then between 5000-6000 rpm the power doubles from 300-600HP. Peaks somewhere round 8200rpm.

Will get the dyno sheet up..

Looking at the power delivery, if i were to build again id definitly go a 3litre and perhaps a slightly smaller turbo. But no doubt this will still be fun :yes:

Edited by SLY33
SLY33 Mentor

SLY33

Posted
  • Author
Posted
Nawww no aircon :)

Dude! Tell me about it! I said to my engine builder i wanted to keep it, but no room for condenser and fan.. He said later on we could do something custom... Car will barely get driven anyway as i dont live in Australia anymore! Offers to buy this car may be considered!

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

    • Waders360
      M35 Brake caliper replacement

      By Waders360 · Posted

      Hi from Canada, Both of my calipers are starting to fail. My car is a 2005 M35 Stagea ARX and I can't seem to find any parts or any cross reference caliper that would fit my car. Is there a company or a similar caliper that would fit and I could replace the OEM one. Or if anyone knows where I can find a new OEM. Any help is very appreciated. Let me know!
    • 25zenki
      S1 rb25/s14 starting problem

      By 25zenki · Posted

      Maf is a question mark but TPS  I have set at 0.47, the fact that I’m getting proper voltage range out of it with the key on leads me to believe it’s functioning properly. I’m getting proper voltages on basically everything. I still need to look up voltage ranges for z32 maf and test that 
    • 25zenki
      S1 rb25/s14 starting problem

      By 25zenki · Posted

      Honestly no not at all, but it’s a very basic tune, it’s stock injectors q45 tps and z32 maf. Other than that it’s a completely stock base map. The file is from nistune and from my understanding if it was tune related I would be able to unplug maf and tps and it would still start even if it was a really shitty start. I have tried starting it with coolant temp, maf, and tps unplugged none of those 3 togethor or individually changes anything 
    • Matt Z
      SAU NSW - Bathurst Run 2025

      By Matt Z · Posted

      🏆 Skyline Supremacy Meets Mount Panorama Magic 🏆 Join SAU NSW as we take the long way to Bathurst, the home of GTR greatness. Saturday 30th August 2025 7:00AM Meeting Hanna Park North Richmond 7:30AM Departure Cruise Via Bells of Line Road 9:00AM Arrival to Stop 1: Golden Poplars Meadow Flat 9:45AM Arrival to Final Destination: Mount Panorama Motor Racing Circuit Meet Location: Hanna Park North Richmond Stop 1: Golden Poplars Meadow Flat Final Destination: Mount Panorama Motor Racing Circuit   *Disclaimer* There will be a lead and follow car so no one should get lost. If you would like to attend or bring others along please put your name down and a +1 as numbers will be needed prior! This is NOT a race and we will all be adhering to all road rules. If this is what you want please come to one of our many track days. This is an official SAU:NSW event and will be run under a CAMS permit. One of the things that really sets our club apart is our commitment to being true enthusiasts. When on normal roads we strive to maintain good relations with the authorities as well as the public in general. When attending one of Skylines Australia NSW events please try to: • Be aware of surrounding environment and act accordingly. • Drive courteously on the state’s roads as a true enthusiast should. • Understand how important it is to maintain the good name of SAU NSW and thus, treat others accordingly. • Any misbehavior will not be tolerated and you will be asked to leave.
    • soviet_merlin
      My BMW E39 528i touring

      By soviet_merlin · Posted

      What does it look like with highway driving? And yes, I had a similar thought as Duncan. It looks quite similar in my Stagea and I have made myself accept it as normal. Might have to look into it some day   Highway gets as low as 10l/100km on my end so I'm not as worried about it being a mechanical issue. More likely just the tune on the haltech.
×
×
  • Create New...