Jump to content
SAU Community

Rb25det

GOT04

By GOT04,
in Engines & Forced Induction

 Share

Recommended Posts

GOT04 Collaborator

GOT04

Posted
  • Author
Posted

well i already have 280kws on 14psi, its not a daly driver, but i wnat to install cams abd be tuned from mid range power and touque. wont gain any more power as such but touque i will. not sure if its safe or not. i have bigger radators and a oil cooler for safety.

im getting examples on other sites on cars making up to 310kws on stamdard bottom end and still going.

this site would be the best for the info so, come on guys.......

xoxoxoxo

Link to comment
https://www.sau.com.au/forums/topic/192298-rb25det/#findComment-3456694
Share on other sites
R31Nismoid Grand Master

R31Nismoid

Posted
Posted

Dyno is a key thing to note when looking at power across various sites around the world.

US is a bit higher (depending on the brand used)

HUB dyno's are much much more generous and people quote as "rwkw" but its not really that at all when you see '300rwkw' only slip 110mph.

Thats in comparison to the Dyno D's that are here.

So any of them could be right i guess, its just that from what ive seen the DD 'generally' are lower than the US brand they use, and when people talk hubs i just look at rpm/boost as the reading means nothing to me

Link to comment
https://www.sau.com.au/forums/topic/192298-rb25det/#findComment-3456706
Share on other sites
Devils_Advocate21 Mentor

Devils_Advocate21

Posted
Posted

hmmm you could always do WMI? at the end of the day it will also come down to how you drive it how it is tuned, but still the shelf life of stock bottom end is shortened as explained by nismoid. its a gamble at most, and would never as such hurt to do a compression or leakdown along the way to check on things. There was a few examples of people pushing to see how much it will take to break, and there are a few examples of people with stock ends as well at that power.

But i guess safety sake, always atleast have that budget for the "Just in case" if you are willing to take the chance. You might be lucky you might not.

Link to comment
https://www.sau.com.au/forums/topic/192298-rb25det/#findComment-3458167
Share on other sites
Lithium Grand Master

Lithium

Posted
Posted

The most powerful stock bottom end RB25 I have been in/come across is this one - has cams and thicker head gasket, stock from HG down. Made 450rwkw (~600whp) on a pretty high reading dyno though I reckon it'd run over 500whp on most sane reading dynos. Here's a video of it running a 10.6 with full interior, pump gas and a set of drag radials:

Trap speed etc seems not the best, but they were being a bit gentle with the gearbox etc - remember, all stock bits.

Link to comment
https://www.sau.com.au/forums/topic/192298-rb25det/#findComment-3458447
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

    • GTSBoy
      M35 Aftermarket Fuel Pump

      By GTSBoy · Posted

      Have you done your thinking backwards? 3 bar, 43.5 psi pressure drop being the presumed specification for an injector, means you need 3 bar upstream when they are firing into atmospheric pressure, and more upstream pressure than that when on boost (you add your boost to your rail pressure to maintain 3 bar across the injector) and you need..... less pressure upstream when you have vacuum in the manifold. So, presuming that you're idling at -10 psi, then you only need ~23 psi in the rail. I realise that I did not need to say all of that to you specifically Matt, once you'd realised your mistake. It's mostly there for complete clarity for others.
    • Dose Pipe Sutututu
      RB25 Drama's

      By Dose Pipe Sutututu · Posted

      Have you reached out to the guys at Spool Imports? They are a Ross dealer, I can imagine they would have the rings just sitting on the shelf (I could be wrong).  
    • GTSBoy
      Back for more after 18 years - and where are the longnose R200 LSDs?

      By GTSBoy · Posted

      There's one for sale at Grand Auto Wreckers in Lonsdale (SA), for .... let's suggest the sum they're asking for will make you cry. You may have to embrace the idea of modifying the rear subframe to accept some other diff. You could probably find a way to wangle a shortnose into there, with a custom rear adapter and some sort of shenanigans to relocate the front mounts. This has probably already been done by others, so there might be some guidance available as to how easy/impossible it is, out there in the googles. But you possibly needn't restrict yourself to Nissan diffs if you're going to contemplate that. There are similarish Toyota diffs, possibly some Euro ones, possibly some Seppo ones.
    • Duncan
      G35 Control arm and Compression Rods into a V35 Skyline.

      By Duncan · Posted

      The ball joint taper and arm taper have to match angle and diameter, but just doing the bushes is a much better option.....seems like the industry moved to "it is cheaper to replace the whole arm than take on the labour for changing this bushes", glad the aftermarket supports it
    • Duncan
      Back for more after 18 years - and where are the longnose R200 LSDs?

      By Duncan · Posted

      Gee she looks a bit rear heavy in that first pic! Sounds like a great project with the kids, but as I guess you know R series stuff is getting hard to find and pre that is pretty much impossible these days
×
×
  • Create New...