Jump to content
SAU Community

Recommended Posts

Hey SAU,

what sort of power can you get untill stock internals need to be modified on rb25det? Only reason i'm asking is my setup upopened would get me around 270-300kw on pump fuel, but i'm going e85/flex fuel now and that will give it more power and yeah just want to know.

cheers

Link to comment
https://www.sau.com.au/forums/topic/429022-rb25det-how-safe-are-internals/
Share on other sites

Depends which RB25 and what supporting mods etc... Condition of the engine? How it's been treated? Intended use...

Go find the 300kw+ unopened thread which will answer all your questions and allow this Thread to be locked.

how much hard mileage has it done so far?

Mine? About 9000km... Including a close call with a lean out and also overheat (Haltech ECU protect stepped in luckily).

Well here's my setup

Garrett 3076r .82 rear housing

6boost manifold

50mm turbosmart wastegate

Front facing plenum

90mm tb

Sard 850cc injectors

450lph e85 pump -will have surge tank

Link g4 plug and play

Engine done about 120ks easy life, only reason I asked as I was going to use pump fuel but now going flex fuel/e85 and I will gain kw and will have over 300kw on a max of 17psi and wanted opinions on how long internals will last

I had a similar setup and maxed the turbo out... At that stage my engine had done 140000km and has had a rough life... Ran it on 360kw where it was thrashed...

It now has the HTA turbo running 390ish and has 149000km...

It's all in the tune! There is no magic number that will make your engine safe.

How much of a gain did you did from flex fuel? Okay hopefully when it gets tuned it's done right

About 30kw on low boost... We didn't tune pump 98 fuel on high boost though so no full boost comparison. But it's nice and responsive on ethanol, smells good too ;)

350 is about the safe limit, we have a few in the 400's but i would not recommend it.

on a R33 motor right? don't the ringlands let go? I know R34 RB25DET NEOs are built as well as tanks

Hey man to be honest ill tell you a little trick water meth injection if u can do that u can push it further on stock internals

Lolololol..... So you are trying to tell us you can increase the strength of the engine internals? You sir are brilliant!

No I'm saying you can push the internals a little further with water meth injection like less chance of detonation at higher boost.

You can do that with E85 too, its not new and its not a secret!

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


  • Similar Content

  • Latest Posts

    • Hi 🙋‍♂️. Just bought my Unicorn but the interior need some minor work so it would match my expectations ;). I noticed it is hard to get used oem floor mats in good condition so i started to dig if there's any chance to buy set of new ones. I found two websites - nengun and amayama and it looks like one can still buy factory new floor mats in Japan, but thers a small issue. Some mats (i assume genuine, oem ones) are marked as G4900 and these are "discontinued". The ones you can buy are marked as G4911 but i have no idea if these are also oem, made by other producer or some lower quality replacements that looks entirely different. Can anyone help? 😃  P.s. there is also some strange indication - 0V005, 0V015 and 0V505. Any idea what does it mean? Would appreciate any help with this 🙏
    • Hi, Marek here 🙋‍♂️. I finally fulfilled my longtime dream - recently bought Stagea and now waiting for it to arrive in Poland. There's only few of these in my country, and one of the owners  recommended mi this forum as a source of all the info i'd need since now i own one  so here i am.  
    • Version 1 aluminium airbox is.......not acceptable No pics as I "didn't like the look.....alot" Even after all my "CAD", and measurements, the leg near the fusebox just didn't sit right as it ended up about 10mm long and made the angle of the dangle look wrong, the height was a little short as well, meh, I wasn't that confident that Version 1 was going to be an instant winner I might give Version 2 another go, there's plenty of aluminium at work, but, after having in on and off a few times, and laying in the old OEM airbox without the new pod filter and MAF, there may be an option to modify the OEM air box and still use the Autoexe front cover and filter.... maybe This >  Needs to fit in here, but using the panel, and not the pod, the MAF will need to fit in the airbox though> I'm thinking as the old OEM box and Autoexe cover that is sitting in the shed is just sitting around doing nothing, and they are relatively abundant and cheap to replace if I mess it up and need another, it may well fit with some modifications to how the Autoexe brackets mounts to the rad support, and some dremiling to move it get in there, should give me some more room for activities, as I don't want to move the MAF and affect the tune Sealing the hole it requires to stick it in the air box is simple, a tight fit and some pinch weld will seal it up tight  I am calling this a later problem though
    • and it ends up being already priced in as though you're just on 91RON without any ethanol. Car will lose a bit of economy as the short and long term fuel trims bring down the AFR back to stoich or whatever it is for cruise/idle for the engine.  
    • Oh, you are right. But, in Australia E10 is based on 91RON fuel and ends up being 94RON. Hence it being the cheaper option for economy cars. The more performance oriented cars go for the 98RON fuel that has no ethanol mixed in. The only step up we have left then at some petrol stations is E85.
×
×
  • Create New...