Jump to content
SAU Community

Recommended Posts

Dyno reading from another customer's R33 Rb25det GTST, Appears to be using the current profiled high flowed 21U Stock turbocharger. 271rwkws on pump 98 fuel and supporting mods.

I think the RPM scale is wrong:

271rwkw.JPG

Pretty impressive for a high flow. Im assuming thats the .82 rear housing? Thinking about going down this route in the future.

That is the $850 21U stock housinged high flow, this profile was updated on Junly this year. It managed 320rwkws on E85 so this is about right number for pump 98.

  • Like 1

Just curious, What did you change in the 21U profile back in Junly?

I just checked my record, I PAID for mine at the post office on the 5th of July. Do you know if I would have the new one?

just curious because I'm getting organised to switch to e85

Edited by Blackkers

If its done in July this year then it should be the current profile.

The actautor is $100 each including the mount bracket. I can get one out to you in about two weeks time.

Hi guys, not really the place for silvias, but nissansilvia don't seem to share the hypergear love like you guys...

I finished fitting my hypergear ss1pu to my sr20 yesterday, and have finally been able to give it a bit of a drive. It's going in for a tune on Wednesday so I'll be able to put up some results after that.

So my old turbo was a 3071, which was a bit too laggy, but kicked hard when it came on; I decided that I wanted something a fair bit more responsive without sacrificing too much power, I was looking at a 2871 but have read that the quality is heading downhill blah blah, etc... When I found this thread, and read through all 442 pages, and spoke to some other members and eventually decided that the ss1pu was going to suit my needs.

It's an extremely different car to drive... before I would put the foot down in 2nd and have the wait/anticipation of full boost; which was great at the time, I'd never driven another turbo car (apart from diesel utes), so I thought this was the bomb. Until yesterday I hadn't driven a car with a responsive turbo either, so I went into it unsure what to expect. At first, I was a little disappointed... power delivery was so smooth, it almost felt underpowered because it just didn't have the same kick as the old turbo; but as I drove further, I started to enjoy the difference. It feels like this turbo makes positive boost pressure around 2,000rpm, and still pulls right to 7,000, its like having an extra 2,500rpm of boost which makes the gears feel endless. Still yet to see what it's like on long trips, 3,500rpm at 100km/h I dare say I'll be at around 12psi :unsure: Anyway, results will be up soon, hoping for 220kw @ 18psi on 98, anything more than that is a bonus, anything less, well that's life, it's still a bit of fun.

/long post.

Edited by Trib

Sounds good keep us posted with results and post a dyno graph

What other mods you got? so we can compare results

I'm trying out the ss1.5 soon once stao gets more wheels made up on my sr20 180sx

Edited by hy_rpm

Just curious, What did you change in the 21U profile back in Junly?

+1 I bought mine back in March (wow) but have yet to fit it. Curious what the changes are to allow more power, did low-end response suffer at all?

+1 I bought mine back in March (wow) but have yet to fit it. Curious what the changes are to allow more power, did low-end response suffer at all?

This is about as responsive as you would want to go id reckon. The stocker was responsive too but it was 20 years old. The high flow is better in everyway. If you want to compare, the 21u gets 1 bar by roughly 2900rpm in 5th

I have made a very different rear wheel for the new high flow, it is bigger as the housing is small, the exducer blade has aso been extended to avoid lag, it worked as expected in terms of gain both power and response. I'm very Keen to see what it does with .82 rear housing, will conduct more evaluations after I get back.

This is about as responsive as you would want to go id reckon. The stocker was responsive too but it was 20 years old. The high flow is better in everyway. If you want to compare, the 21u gets 1 bar by roughly 2900rpm in 5th

Yep I am looking forward to getting it all fitted, life has gotten in the way lately. I'm sure a March 21U will still wake my engine up in a big way :)

I have made a very different rear wheel for the new high flow, it is bigger as the housing is small, the exducer blade has aso been extended to avoid lag, it worked as expected in terms of gain both power and response. I'm very Keen to see what it does with .82 rear housing, will conduct more evaluations after I get back.

Thanks Stao, that's interesting stuff. If you're happy to show a comparison photo that would be great too!

Finally got my SS1PU installed and tuned, been driving it for about a week now and very pleased with how it turned out. I went for a road & dyno tune with Toshi in Sydney - he was very thorough and highly recommended from me

Dyno'd at 252rwkw @ ~18psi, hitting fullboost at 3500-3600rpm in 4th, with around 730nm max torque. Great turbo if you're wanting loads of response!

  • Like 1

Their printer had almost no coloured ink left but I traced over the very faint gray line, here's a 248.7kw run:

car: (z32/nistune ECU, nismo 555cc, nismo fuel pump, blitz fmic, z32 afm, yellow jackets, greddy profec B, scotty 80mm intake)

WzS4NWR.jpg

How do I embed photos?

Got my s14 tuned today with a hypergear ss1pu, bit of a disappointing result, but that's more to do with my setup unfortunately.

Photo speaks for itself, high boost, low power, choking for some reason, new exhaust coming.

IIRC results were: 188kw @ 14psi, 200kw @ 15psi, 203kw @ 18psi, 208kw @ 23psi

http://s702.photobucket.com/user/Joey92_4020/media/20131107_165404.jpg.html

Edited by Trib

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

    • Cheers. Skyline is back on the menu, can’t get rid of it. It’s like a child you don’t want, or herpes 
    • I got back to Japan in January and was keen to get back on track as quickly as possible. Europe is god-awful for track accessibility (by comparison), so I picked up a first-gen GT86 in December just to have something I could jump into right away. The Skyline came over in a container this time and landed in early January. It was a bit battered after Europe, though—I refused to do anything beyond essential upkeep while it was over there. The clutch master cylinder gave out, and so did the power steering. I didn’t even bother changing the oil; it was the same stuff that went in just before I left Japan the first time. Naughty. Power steering parts would’ve cost double with shipping and taxes, so knowing I’d be heading back to Japan, I just postponed it and powered through the arm workout. It took a solid three months to get the car back on the road. Registration was a nightmare this time around. There were a bunch of BS fees to navigate, and sourcing parts was a headache. I needed stock seats for shaken, mistakenly blew 34k JPY on some ENR34 seats—which, of course, didn’t fit—then ended up having the car’s technical sheet amended to register it as a two-seater with the Brides. Then there’s the GT86. Amazing car. Does everything I want it to do. Parts are cheap, easy to find, and I don’t care what anyone says—it’s super rewarding to drive. I’ve done a few basic mods: diff ratio, coilovers, discs, pads, seat, etc. It already had a new exhaust manifold and the 180kph limiter removed, so I assume it’s running some kind of map. I’ve just been thrashing it at the track non-stop—mostly Fuji Speedway now, since I need something with higher speed after all that autobahn time. The wheels on the R34 always pissed me off—too big, and it was a nightmare getting tires to fit properly under the arches. So I threw in the towel and bought something that fits better. Looks way cleaner too (at least to me)—less hotboy, less attention-seeking. Still an R34, though. Now for future plans. There are a few things still outstanding with the car. First up, the rear subframe needs an overhaul—that’s priority one. Next, I need to figure out an engine rebuild plan. No timeline yet, but I want to keep it economical—not cutting corners, just not throwing tens of thousands at a mechanic I can barely communicate with. And finally, paint. Plus a bit of tidying up here and there.  
    • Nope, needed to clearance under the bar a little with a heat gun, a 1/2" extension as the "clearancer", and big hammer, I was aware of this from the onset, they fit a 2.0 with this intake no problems, but, the 2.5 is around 15mm taller than a 2.0, so "clearancing" was required  It "just" touched when test fitting, now, I have about 10mm of clearance  You cannot see where it was done, and so far, there's no contact when giving it the beans Happy days
    • It's been a while since I've updated this thread. The last year (and some) has been very hectic. In the second-half of 2024 I took the R34 on a trip through Germany, Italy, France and Switzerland - it was f*cking great. I got a little annoyed with the attention the car was getting around Europe and really didn't drive it that much. I could barely work on the car since I was living in an inner-city apartment (with underground parking). During the trip, the car lost power steering in France - split hose - and I ended up driving around 4,000kms with no power steering.  There were a few Nurburgring trips here and there, but in total the R34 amassed just shy of 7,000kms on European roads. Long story short, I broke up with the reason I was transferred to Europe for and requested to be moved back to Japan. The E90, loved it. It was a sunk cost of around EUR 10,000 and I sold it to a friend for EUR 1,500 just to get rid of it quickly. Trust me, moving countries f*cking sucks and I could not be bothered to be as methodical as I was the first time around.
×
×
  • Create New...