Jump to content
SAU Community

Recommended Posts

On different setups, I ran the GTX2860's with the stock anti surge front housings with welded on flanges in my 2.8. In short they come on boost later than a 2860-5. They are quieter though

he modified the gtx housings to fit the Gtr

Yes married Thursday

I'M back again with more news... mechanic told me my oil seal is leaking and if i dont change it, turbos will need rebuild. Since I'm not doing any mechanic on my car, i thought.. if im going to pay labour $ to have my seal/gasket redone, I might as well check my turbo and swap them with brand new turbos to recover optimal performance of the car.

I found out about a company called Pure turbos..

They ask 1100$ to have both turbos rebuilt with new brass cage and new billet wheel. ( they say it will be as good as brand new turbos , if not better due to brass cage and billet wheel)

Now heres where i need your help... they offer me a 60mm billet wheel which should yeild a 40hp/per turbo upgrade ( probably taken from the gtx2860's figure) and a 63mm which would yeild 80hp/per turbo. They say turbo spool shouldn't be noticeable and if it was their engine, they would go 63mm.

I'm scared the 63mm will actually be too laggy and i have doubt about their claims on spool. if I had 2.8 stroker.. it would be a different story, but I'm only on a rb26 with 86.5mm.

What front compressor housing are you using, normal -5 or surge slotted? You will be more at risk of compressor surge with a bigger compressor wheel.

-5s housing !

Considering you only wanted 500-550 Whp, it's a not brainer. 60 MM wheel!

I also feel the same.. but you know.. if the lag is going to be 200ish rpm and your gaining an extra 40hp/turbo.. it's interesting lol.

200 rpm is heaps!!!!

Very true, people don't seem to understand what a few hundred rpm can do to a car...

My T88 on dyno was only 500rpm (ish) slower to get 15psi on the dyno compared to the 6262, on the road/track it went from being horribly laggy to very responsive

  • Like 1

^^ *like*.

Micko's old man changed his exhaust and went back to a stock airbox on his GTR. Overlay the graphs and it was 200 rpm everywhere. TOTALLY different car to drive. It went from a car which did nothing under 5000 rpm to be able to drive it quickly quite easily.

60mm. Do it. Don't forget you have a 2.6 too. A bigger engine you'd get away with it.

  • Like 1

Some open pods. Mmmm all that yummy hot air!

It was a 33 though. Different design to a 32 box.

I know I'd make more power going back to an air box but I'd never thought about earlier spool as I wouldn't have thought it would have made a difference.

I'm pretty sure I'd still be fine with a standard box at 325kw.

The whole shebang coming on earlier was more to do with sorting the pos "jap" exhaust out. Getting rid of the rubbish restrictive mufflers and mismatched pipes. Going back to the airbox was just something he did at the same time.

  • Like 2

Yep picked up 15-20kw throughout the midrange to redline. Was a night and day difference really was much nicer to drive and also made power feel more progressive not just a BANG & it was alive at 5000rpm :)

Very true, people don't seem to understand what a few hundred rpm can do to a car...

My T88 on dyno was only 500rpm (ish) slower to get 15psi on the dyno compared to the 6262, on the road/track it went from being horribly laggy to very responsive

There are times I've seen NO difference in spool on the dyno and still a very noticeable difference in practical use - dynos can be quite misleading at times!

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

    • Would you ever vent this bonnet or will it be unnecessary?
    • Happy new years folks! Wishing you all a successful year of money pit ownership!  So the subframe bushes are out....   Ok, who else has done that job before??  What a C U Next Tuesday of a job that is!  Be glad to not do that again in a hurry! I think I explored every option available to chop the middle section of the bushes out, most of them unsuccessfully! I dried a holesaw, die grinder, normal drill bit, air chisel, etc, etc. The true success happened by accident when I'd decided to try a step drill I spotted on the bench on the way passed.  See, there are benefits to never cleaning up after yourself! It RIPPED through so so much better than the drill bit. It has to be the skinniest one available so its small enough to fit between the inner tube and outer casing but it made easy work of it.  First one i hammered the shit out of... New method- 20250102_185506.mp4     I did the other 5 in less time than I fluffed around with the first one. I used the cut off saw (sawsall as the yanks love to call them) to cut a break in the casing. Even with that they're still a prick to hammer or air chisel out.  The last few i just went rambo with the air chisel without cutting them. I overcome one of the early ones so will hit the with the mig to fill the cut then sand it off smooth.  The carnage left over-   I've also been "nesting" ie, cleaning up my babies nursery,  ie cleaning the f**king pig sty of a shed. I've got that much shit laying around it's as cluttered as my head!  Getting things put away, in boxes, on shelves, hanging off walls, all to get some working space back again.  Hopefully that keeps me motivated....
    • AFAIK does the base map for Haltech even have the 4D compensation enabled? It's been a while but when I looked at it I remember it was actually using pure TPS as one load signal and MAP for another. Seemed workable but not ideal by any stretch. A lot of people have "make the event-itis" which leads to stuff like this happening.
    • https://www.youtube.com/watch?v=qHhWelSBppY
    • Even back in the day, some importers were renowned for bringing in crashed cars, giving them a quick touch up + respray and making them look mint
×
×
  • Create New...