Jump to content
SAU Community

Recommended Posts

Brae Auto Fabs, Cost $1100. It is custom made to suit this turbocharger, and fitted every thing perfectly. You can find more details about this manifold in page 513.

  • Like 1

Stao can you tell me abit more about the new single you are testing? Since the N1 GTRs already has pretty decent turbos from factory, What are the advantages compare to the factory twins? Cheers

Well, I would like to reach optimum performance levels based on a particular type of engine that I'm working on. The goal of this project would be trying to maintain the factory N1's response while making alot more power. I have spent few more hours today making an custom spring holder for my external gate that packed 4 springs, the lathe have made this job so much easier :P :

eg1.jpg

eg2.jpg

eg4.jpg

Its now hitting boost cut without BC, which is either 17psi or 30psi depending on what Trent set it on :turned: .

I have also made some little changes on the turbine housing and made it run on oil cooled Ceramic balls. Drive ability wise, this is probably the best single any one's ever made for a GTR in its HP range. I rate it better then the stock twins.

Little footage of CBB turbocharger shutting down:

  • Like 1

the 76mm turbine, is that the one you where using in 21U hi flows or something ?, not op6/.82 hi flow?

did you fit that to my ss3 thing you did for me?

cheers

darren

Edited by jet_r31

The internally gated ATRSS2 (0.82a/r hotside) we ordered arrived late last week, is a nice looking unit and Stao supplied a few bits to make installation a bit easier. Busy times at the moment so it now looks like we're not likely to have it running until roughly mid November, but I will update with results. I'm quite looking forward to seeing how it performs :)

  • Like 2

the 76mm turbine, is that the one you where using in 21U hi flows or something ?, not op6/.82 hi flow?

did you fit that to my ss3 thing you did for me?

cheers

darren

Yes the prototype is running the Steam peddle turbine, same as yours. :D

The Rb26dett engine has a long rev range so the turbocharger must be able to flow that extra bit of air. Evaluating using 60mm turbine, I've notice a huge surge of torque once the external gate opens, this is usually an indication of undersized exhaust end . The turbocharger will not last if left to be, and the engine will not be able to take much timing up top.

The steam peddle turbine worked nicely in mid top end, but I felt a short period of flat spot down low. With VNT nozzle ring and CBB cartridge in place, that flat spot is gone. The car comes on positive boost with a lite touch of throttle,and its pretty much driven on boost all times. I'm very positive with the up coming dyno test.

  • Like 2

this may have been covered already.

is there an option for a bolt on internal gate td06sl20.5g?

I love the progressivness of it on my 1j

so would like one on the rb25. but without the cost of another 1400 buck exhaust manifold....as much as I would like too..

TD06L2 range doesn't work very well internally gated on Rb25det. Std high flow performed better. SS2 is a better one that is engineered to perform internally gated on Rb25det.

I'm looking onto different turbo options for my rb20,

I would like to get 230-240rwkw and wondered if you are able to have a t3 8cm rear housing onto one of your td05 18.5's

or would and rb20 or 25 hiflow be better suited?

On pump fuel with reasonable response on an rb20

also do your turbochargers response change much between an rb20 and sr20?

If I remember correctly Stao already stated that a RB20 have the same boost threshold than a non VCT SR20.

ATR43 SS1 result @18psi :

rb20det225rwkw.jpgThe result is available in this exact same topic, you just need to go to page 1 and search in the summary, or search on Stao website, or search on the RB20 dyno thread. Plenty of information everywhere. :)

What do you call reasonable response ?

For some full boost @5000 rpm is fine, others begin complaining when they have to wait for 2000rpm for the torque to come.

Thanks for answering that romain, I have read the rb20 dyno thread. Also ive followed the this hypergear thread for a few years.

At the moment my 32 has only boltons and stock turbo at 1bar and the amount of useable torque this has makes it a very brisk car, but out on the open road 80-100km plus it feels (relatively) slow.

I really want more up top without losing too much down low

The ATR43SS-1, and 1.5 are great turbos for the Rb20det, as it is actually running a T3x turbine housing that has been modified from a T2x. That we can run them with our 55mm turbine wheel using either a 68mm billet compressor or a 71mm cast compressor. We usually see 20psi around 4200RPM that makes any where from 220~250rwkws. If better response is preferred we can also build it in 2860-5 specifications that would be making 20psi around 3900RPM that makes around the 210rwkws mark.

To high flow factory RB20det turbocharger, for best response it will has to be a G1 profile. and that will be making 20psi around 4000RPM with around the 200~230rwkws mark depending on how much boost is pumped.

You can compare response using the reference from our SR20det evaluation based on the runs that has VCT turned off. Alternatively, if comparing to a RB25det result, the difference in response is about 1000RPM.

Some updates. This is the twin turbocharged LS1 VK from Chequrered Tuning that I've recently built the turbochargers for:

carfront.jpg

enginebay.jpg

turboleft.jpg

Final result of 523rwkws @ 3.8psi. Wondering whats 400rwkws by 4000RPM like? :D

power.jpg

boost.jpg

Its heading for WTAC comming. will upload videos once available.

  • Like 2

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

    • Major thread necro but how bad of a job is it to DIY? Looking at it online it looks like if you reuse your ring and pinion as long as those are in good condition it should be fine to just pull the axles/front cover and replace the diff that way? Or should I be replacing everything and doing preload measurements/gear mesh testing like the factory service manual mentions for the rear diff?
    • in my list I had the R33 GTR as the best Skyline. Infact I had all GTR's (33>34=32), the NSX, the GTO, the 300ZX, the 180SX, the S15 better than the FD RX7. I had the MR2 and the A80 as 'just' better. I also think the DC5R Integra looks better but this is an 01 onwards car. I also think the FC>FD. It's almost like aesthetics are individual! The elements @GTSBoy likes about the FD and dislikes about the 180 are inverse in my eyes. I hate the rear end of the FD and it's weird tail lights that are bulbous and remind me of early hyundai excels. They are not striking, nor iconic, nor retro cool. The GTO has supercar proportions. I maintain these look much better in person (like the NSX) especially with nice wheels and suspension which is mandatory for all cars pretty much. Some (or all) of these you have to see in person to appreciate. You can't write a car off until you see one in the flesh IMO. Like most people we probably just like/dislike cars which represent certain eras of design or design styles in general. I also think the 60's Jag E type looks HORRIBLE, literally disgusting, and the 2000GT is nothing to write home about. FWIW I don't think the Dodge Viper Gen1's have aged very well either. You can probably see where I rate bubbly coupes like the FD. I know we're straying now but the C4 and C5 absolutely murder the Viper in the looks department as time goes on, for my eyes. Wouldn't surprise me if people who love the FD, also love the MX5, Dodge Viper, Jag E Type, etc etc.
    • I used to hate R31s, and any of the other Nissans that led up to it, and any of the Toyotas with similar styling, because of the boxiness. They were, and remain, childish, simplistic, and generally awful. I appreciate R31s a lot more now, but only the JDM 2 door. The ADM 4 door (and any other 4 door, even if they are unique compared to our local one) can eat a bowl of dicks. The Aussie R31 is also forever tarnished by their association with stereotypical bong clutching Aussie R31 owners of the 90s and early 2000s. I think the Nissans of the 70s (other than 120Y/180B/200B) are far superior looking to the 80s cars. The 240K era Skylines are boss. The same is broadly true of Toyotas. Hondas don't ever register in my thinking, from any era. Mitsus are all horrid shitboxen in any era, and so also don't register. Subarus are always awful, ditto. Daihatsus and Suzukis also don't generally register. They are all invisible. I think the SW20 MR2 looks fiddly. The 3000GT/GTO is like that but way worse. Too many silly plastic barnacles and fiddly gimmicks ruined what could have been a really nice base shape. Kinda-sorta looks like a big heavy ST165 Celica coupe (and I'm not sure if that's a good thing or a bad thing). I think the 180SX is dreadfully bland. It's not bad looking. But it has no excitement to it at all. It's just a liftback coupe thing with no interest in its lines, and bad graphical elements (ie wide expanses of taillight plastic on the rear garnish). The S13 Silvia is a little better - getting closer to R32 shapes. But still....bland. S14? Nope. Don't love it. S15...a little better. Probably a lot better, actually. Benefits from not being like a shrunk in the wash R34 (where the S13 was a shrunk in the wash R32 and the S14 looked like a Pulsar or something else from the stable on Nissan mid 90s horrors). The Z32 was hot as f**k when it came out but hasn't aged as well as the A80. Keep in mind that I think the R33 is the most disgusting looking thing - and out of all the previous cars mentioned is objectively closest to my precious R32. It's just....real bad, almost everywhere you look. And that is down to the majority of what was designed in the 90s being shit. All Nissans from that era look like shit. Most other brands ditto. In that context, the FD absolutely stands out as being by far the best looking car, for reasons already discussed. Going behind the aesthetics, the suspension alone makes it better than almost any other car.  
    • If they just called it the "Mazda Tiffany", it would have been spot on.
    • Yup but for me its the HR ! Cut my teeth on the old holden 6s in the day ! And here's me thinking in the day it was also the 300ZX and the Mitsubishi GT3000 ! All, as well had good lines, but always seemed to need finishing off, style wise.
×
×
  • Create New...