Jump to content
SAU Community

Recommended Posts

This turbo is current produced.

I've trailed the ATR45 SAT on a RB25det Neo today. With 0.1L of a difference in capacity those two engines are very different. The Rb26 SAT version didn't work on Rb25det, which I've had to make a new rear for. the result was 421rwkws out of a 120,000KM stock motor. Will upload result tomorrow.

This turbo is current produced.

I've trailed the ATR45 SAT on a RB25det Neo today. With 0.1L of a difference in capacity those two engines are very different. The Rb26 SAT version didn't work on Rb25det, which I've had to make a new rear for. the result was 421rwkws out of a 120,000KM stock motor. Will upload result tomorrow.

How didn't it work? Interested in your findings

Based on the same configuration It was super responsive but didn't make expected power. Same CHRA with a SS2 turbine and it worked. Response wise It made 20psi by 4200RPM and 25psi at 4400RPM. Because the owner was looking to rebuild this engine so he didn't care if it blows and decided to max out that turbo. The final run was 421rwkws peek 28psi, He been thrashing the car on daily base, its a 120,000K unopened motor and I'm surprised of how well built stock Rb25det Neos are. Perhaps that is why Nissan never released GT-Four with a Rb25det Neo motor in it.

Its not the most responsive result I've had but good enough for a daily and not too bad for the power level its reached.

power.jpg

boost.jpg

It was making 20psi around 3800RPM, which is close to 500RPM more responsive then the GTR. but stopped making power at 370rwkws. I don't have that sheet but I can see if I can get one from the tuner.

  • Like 1

Hey guys and gals, just a few questions.

This is a quick run down on what I already have

740cc nismo injectors

Z32 afm

Walbro fuel pump

3 inch exhaust

Apexi power fc

Npc clutch

Manley rods

Pod filter

High flowed rb25 turbo

All making 215kwatw

My question is, I'm buying a hyper gear turbo very soon and I just wanted to know how much power roughly would the hyper gear turbo achieve? I can only run on 98 as we don't have it on pump in my area!

Thanks in advance for your reply

Yes, I'm mainly looking into making power and response based on unopended engines.

For internally gated options.

A high flowed R33 turbocharger that is done by us, you will be looking roughly into the 260rwkws mark. Or 270rwkws for a R34 turbocharger.

G3 and SS2 would be making around the 280rwkws mark with supporting mods.

Hey guys and gals, just a few questions.

This is a quick run down on what I already have

740cc nismo injectors

Z32 afm

Walbro fuel pump

3 inch exhaust

Apexi power fc

Npc clutch

Manley rods

Pod filter

High flowed rb25 turbo

All making 215kwatw

My question is, I'm buying a hyper gear turbo very soon and I just wanted to know how much power roughly would the hyper gear turbo achieve? I can only run on 98 as we don't have it on pump in my area!

Thanks in advance for your reply

Hi Ryanh2512,

You have pretty much the same mods as me, I just got my Hypergear Highflow from Stao installed and tuned yesterday. My car made 250rkwk on 18psi with the R33 21U Highflow very responsive and nice on the street. You may want to look into getting a 3inch metal intake pipe made up as well.

Also thanks Stao for the turbo :)

Yeah definitely look into a metal 3" intake pipe.. mine was sucking closed after just 220kw so its a no brainer if your wanting more then that. i would recommend 21u if you want good response. But if you want a kick in the face at 3.8-4k rpm definitely go ss2 without a doubt

  • Like 3

Stao - was that last Dyno graph you posted supposed to be blank?

Also, how do your latest ATR45 results compare to the Neo Stagea result a couple of pages back? Are they similar, but different dynos? It was over 400kw..

Sorry - last question! Can you provide an Adaptronic e1280s along with your turbos, rather than the Select model? They have full sequential ign and injection, more flexible, and still have the rb25 style ecu plug.

The following is about the boost drop with few customers cars. The ability of an internally gated system holding boost through the rev range is crucial in building HP and torque in mid and upper rev range. Making sure our turbochargers are able to hold boost, our internally gated systems has been engineered to performing a very slight creep. Most of guys that uses high flows or a simple boltons tried to obtain legal appearance while keeping the amount of fabrication work to minimum, that in most of cases have to deal with restrictions. I've been building turbos for RB owners for a number of years and there is a pretty clear pattern emerging, The most people whom experience boost dropping issues are fitted with some sort of a return flow cooler. I was curious and undecided wither if it is an intercooler issue, there for purchased a car with a genuine Blitz return flow cooler fitted.

Today's run, I'm using a high flowed OP6 turbocharger with a high pressure actuator. Maps sensors were tapped from both sides of the intercooler and results was some how expected. Running high pressure actautor with no boost ebc connected, sensors is reading a 3.7psi drop across the core, and which I'm sure if EBC is adapted, the percentage of drop will be much greater.

boost.jpg

Didn't make expected power:

power.jpg

So Return flow coolers should not be used when expecting beyond 250rwkws. And in my personal opinion it should not be used at all. 600x300x100mm cooler will be installed next week to complete power run above.

  • Like 1

Stao, do you think it's only the core that's the problem or does the return flow piping also play a part in the pressure drop? Do you think replacing the core in a return flow system would alleviate the problem?

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

    • Yup. You can get creative and make a sort of "bracket" with cable ties. Put 2 around the sender with a third passing underneath them strapped down against the sender. Then that third one is able to be passed through some hole at right angles to the orientation of the sender. Or some variation on the theme. Yes.... ummm, with caveats? I mean, the sender is BSP and you would likely have AN stuff on the hose, so yes, there would be the adapter you mention. But the block end will either be 1/8 NPT if that thread is still OK in there, or you can drill and tap it out to 1/4 BSP or NPT and use appropriate adapter there. As it stands, your mention of 1/8 BSPT male seems... wrong for the 1/8 NPT female it has to go into. The hose will be better, because even with the bush, the mass of the sender will be "hanging" off a hard threaded connection and will add some stress/strain to that. It might fail in the future. The hose eliminates almost all such risk - but adds in several more threaded connections to leak from! It really should be tapered, but it looks very long in that photo with no taper visible. If you have it in hand you should be able to see if it tapered or not. There technically is no possibility of a mechanical seal with a parallel male in a parallel female, so it is hard to believe that it is parallel male, but weirder things have happened. Maybe it's meant to seat on some surface when screwed in on the original installation? Anyway, at that thread size, parallel in parallel, with tape and goop, will seal just fine.
    • How do you propose I cable tie this: To something securely? Is it really just a case of finding a couple of holes and ziptying it there so it never goes flying or starts dangling around, more or less? Then run a 1/8 BSP Female to [hose adapter of choice?/AN?] and then the opposing fitting at the bush-into-oil-block end? being the hose-into-realistically likely a 1/8 BSPT male) Is this going to provide any real benefit over using a stainless/steel 1/4 to 1/8 BSPT reducing bush? I am making the assumption the OEM sender is BSPT not BSPP/BSP
    • I fashioned a ramp out of a couple of pieces of 140x35 lumber, to get the bumper up slightly, and then one of these is what I use
    • I wouldn't worry about dissimilar metal corrosion, should you just buy/make a steel replacement. There will be thread tape and sealant compound between the metals. The few little spots where they touch each other will be deep inside the joint, unable to get wet. And the alloy block is much much larger than a small steel fitting, so there is plenty of "sacrificial" capacity there. Any bush you put in there will be dissimilar anyway. Either steel or brass. Maybe stainless. All of them are different to the other parts in the chain. But what I said above still applies.
    • You are all good then, I didn't realise the port was in a part you can (have!) remove. Just pull the broken part out, clean it and the threads should be fine. Yes, the whole point about remote mounting is it takes almost all of the vibration out via the flexible hose. You just need a convenient chassis point and a cable tie or 3.
×
×
  • Create New...