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HyperGear SR20det turbocharger Innovation, Evaluation and Testing - Hardtuned.net

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HyperGear SR20det turbocharger Innovation, Evaluation and Testing 

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#1 HyperGear

  • Joined:28-February 06
  • Location:Australia VIC
  • Car:180SX, S14, S15, R33, R33, 300ZX

Posted 11 January 2014 - 11:42 PM

It has been 5 years since my last developments in SR20det turbochargers. Which was sadly unsuccessful during the time, from lack of experience, skills, as well as general acknowledgement in modifications.

Understanding few members might have issues withour discontinued turbochargers sold between 2006~2009, those are mainly the imported TR25, TR28 and TR28KAI models. I have been sorting and still happy to offer discounted repairing services.

All turbochargers of ours now are build in Australia with all engineering work done by qualified and experienced local engineers.

During those years most of my time and efforts has been spent in developing and building RB based turbochargers, mainly in the field of high flowing and bolton applications. We have made couple of very good turbos, the venture is on going, successful, with lots of experiences earned.

Our SAU RB based turbocharger development thread is at:

http://www.skylinesa...vice-continued/


Back to topic.
The level of performance on my current T2x based turbochargers are to be improved, more specifically in working with SR20dets engines. The goal is creating a bolton replacement, that can produce reasonably good power and response working with ordinary engines using commonly available mods.

Ensuring a successful out come, I have purchased a S14.5 with engine hardware built by Forced Motorworx and body restored by Motorware.

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Because SR20det's output can vary significantly due to the type of cams used as well as other generalized mods such as exhaust, intercooler, induction and so fourth. Results and comments below are only referring to what I currently have, my performance related modifications are:

BC Stage 2 cams, VCT has been cancelled.
Drift Exhaust manifold (low mount)
RAS (rocker arm stoppers)
CP pistons
BC rods
Garrett 30-71 Turbocharger in .64 rear housing. Note this is the proper GT3071 with a 60mm turbine, not the Cropped 56mm version.
700cc Nismo injectors
Nistune chip
Custom air box with K&N filter
PWR radiator and intercooler (intercooler is inside engine bay so no chassis cutting)
Spit fire coil packs
Varex exhaust system
100cell race cat
Z32 Air Flow Meter
Gizzmo boost controller

The GT3071 might have been a choice for members whom's targeting outputs between 230~260rwkws. This particular one has maxed at 257rwkws peeking 21psi of boost on P98 fuel.

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Even thou the peek power is acceptable for the size of this turbocharger, I found it is horribly laggy to drive. So it has been replaced with a turbocharger that I've engineered earlier for RB20det motors: The ATR43SS1 Billet version. A T2x turbine housing was selected for the OEM manifold and dump, knowing the standard .64 rear might be restrictive, a .86 A/R sized housing with a large 38mm internal gate has been machined to suit.
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Car was dynoed again very soon after. Making 258rwkws peeking 22psi. Not much gain in power, how ever the boost response is now improved, so is the down low power and torque:
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The car is now better to drive on the road compare to what it was. I'm in the process of further evaluations with a customized T2x turbocharger based on my opinions in improving its current performance. Results in addition will be uploaded once evaluations conducted.

Edited by HyperGear, 12 January 2014 - 10:39 AM.


#2 tumbleweed

  • Joined:04-March 12
  • Location:Australia SA
  • Car:Missile

Posted 12 January 2014 - 11:29 AM

Looking forward to any news/updates , are you only working on the one turbo or releasing a whole line up?

#3 ru55kj

  • Joined:21-January 06
  • Location:Australia NSW
  • Car:S15

Posted 12 January 2014 - 12:29 PM

would be interesting to see the results of 64 housing and or sr20 with vct.

#4 180sxnit

  • Joined:16-November 05
  • Location:Australia NSW
  • Car:S15

Posted 12 January 2014 - 12:35 PM

Can't wait to get my hypergear turbo :) ment to be arriving soon :)

#5 HyperGear

  • Joined:28-February 06
  • Location:Australia VIC
  • Car:180SX, S14, S15, R33, R33, 300ZX

Posted 12 January 2014 - 08:37 PM

^
Yes work is almost done, will dispatch early coming week.

The current ATR28 G1 ~ G4 series are ok performers for the HP.
I would like to build some thing perhaps G2's power with G1's response and etc. Similar to the SS and SS Alpha series for RB25det engines.

#6 beersandwich

  • Joined:17-February 07
  • Location:Australia NSW
  • Car:513

Posted 12 January 2014 - 09:52 PM

yeah something for stock cammed engines would be great :)

#7 HyperGear

  • Joined:28-February 06
  • Location:Australia VIC
  • Car:180SX, S14, S15, R33, R33, 300ZX

Posted 12 January 2014 - 10:34 PM

The cam change in SRs makes a pretty big difference to how the engine performs. Which also affects the response substantially. For example this is from our ATR28SS1PU turbocharger, which is a super responsive turbo originally made for RB25det motor. I've made one in a .64 rear for a Friend's S13 Red top SR 180sx.

Those are results from Stock cams V Tomei 272 / 12mm cams. Same turbocharger. Pump 98 fuel.

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Unlike RB25det motors, stock cams are good enough for alot of power, which mine have reached 435rwkws on E85. So I rarely have a customer whom have aftermarket cams installed, which makes hp prediction is quite simple. I have personally experienced with Tomei's 264 / 9 mm cams however, and it did not make much differences in performance apart from adding lag.

SR20det is different, most of them needs aftermarket profiled cams to make decent power, and there are so many different varieties available. It is there for harder to prediction an accurate outcome. Hopefully I will learn more about them as this project progresses.

My Current Cams are BC, on paper they are 264 / 12.06 lift, majority of SR customers has Tomei drop in pon cams that appears to be in 256 / 11.5mm. Technically mine should make slightly more top end with abit more lag. I'm in the process of finding standard cams gears to restore factory VCT, hopefully makes a noticeable difference to its current boost behavior. Please send in a PM If you have a set for sale and based in Vic.

Edited by HyperGear, 12 January 2014 - 10:38 PM.


#8 180sxnit

  • Joined:16-November 05
  • Location:Australia NSW
  • Car:S15

Posted 13 January 2014 - 07:44 AM

View PostHyperGear, on 12 January 2014 - 08:37 PM, said:

^
Yes work is almost done, will dispatch early coming week.

The current ATR28 G1 ~ G4 series are ok performers for the HP.
I would like to build some thing perhaps G2's power with G1's response and etc. Similar to the SS and SS Alpha series for RB25det engines.
awesome thanks :)........... g2 with g1 response would be a good option especially for people who aren't after massive power ( something i would consider at a later stage as a rebuild option)... would this be done using a billet wheel?

#9 Aunt Silvia

  • Joined:19-February 10
  • Location:Australia QLD
  • Car:JDM S15

Posted 13 January 2014 - 10:30 AM

I would buy a hg turbo except every dyno graph i see is all squiggly and jumpy and looks like absolute shit.

#10 blingcommander

  • Joined:05-October 06
  • Location:Japan
  • Car:Scooty-Puff Jr.

Posted 13 January 2014 - 10:48 AM

thats coz the graph is squashed making it look more dramatic.

nothing to do with the turbo. here is the dyno of my 1jz with a hypergear turbo
http://www.nissansil...98364_thumb.jpg

#11 Dose Pipe Sutututu

  • Joined:19-January 05
  • Location:Australia NSW
  • Car:Boat Sutututuutu

Posted 13 January 2014 - 12:01 PM

View PostAunt Silvia, on 13 January 2014 - 10:30 AM, said:

I would buy a hg turbo except every dyno graph i see is all squiggly and jumpy and looks like absolute shit.

it's call no smoothing applied, other dyno graphs you see have so much smoothing put on it the graph looks like trajectory path of a missile aiming at Osama's asshole

#12 AC-S13

  • Joined:12-August 08
  • Location:Australia NSW
  • Car:1989 CA18 Sil

Posted 13 January 2014 - 12:07 PM

1500Nm of torque?

#13 Dose Pipe Sutututu

  • Joined:19-January 05
  • Location:Australia NSW
  • Car:Boat Sutututuutu

Posted 13 January 2014 - 12:15 PM

View PostAC-S13, on 13 January 2014 - 12:07 PM, said:

1500Nm of torque?

that's tractive effort, you need to convert it to nm.. which is dependant on all sorts of shit like wheel size, final drive, etc.

#14 Skepticism

  • Joined:27-November 12
  • Location:Australia NSW
  • Car:180sx

Posted 13 January 2014 - 12:51 PM

How are the VNT turbos going, tried any on SR?

#15 HyperGear

  • Joined:28-February 06
  • Location:Australia VIC
  • Car:180SX, S14, S15, R33, R33, 300ZX

Posted 13 January 2014 - 04:23 PM

Well the curve is joint of dots representing at give RPM the engine is doing what. They all naturally "bumpy" , then it can be smoothed through dyno software which present it with an output of perfectly smooth curves. Doing R&D it is important to know what the engine is doing during the run, so my readings are raw.

The next one up is the VNT Alpha model, if every thing works, it should knock 300rpms of lag while not affecting top end power.

Edited by HyperGear, 13 January 2014 - 04:24 PM.


#16 MoJizzy

  • Joined:30-July 09
  • Location:Australia WA
  • Car:Silvia S14A

Posted 14 January 2014 - 03:21 PM

Can vouch for hypergear turbo, quality product and excellent support from a local guy.

#17 Marko

  • Joined:30-October 05
  • Location:Australia ACT

Posted 15 January 2014 - 07:38 AM

keen to see how this progresses.

#18 HyperGear

  • Joined:28-February 06
  • Location:Australia VIC
  • Car:180SX, S14, S15, R33, R33, 300ZX

Posted 15 January 2014 - 07:59 PM


here is a quick peak of a brand new ATR28SS1.5 Alpha prototype, which took me a weeks of spare time to complete. Note this is the internally gated version.


Posted Image


It is currently a bolton turbocharger for SR20det motors. After a little bit of driving around it is definitely more responsive then the SS1, even the CHRA configuration is larger.


There are alot of reasons on paper that it will not or will work properly, Dyno tune tomorrow morning. Hopefully the working theory proves its ground.


#19 MoJizzy

  • Joined:30-July 09
  • Location:Australia WA
  • Car:Silvia S14A

Posted 21 January 2014 - 11:21 AM

Any updates on the dyno testing?

#20 HyperGear

  • Joined:28-February 06
  • Location:Australia VIC
  • Car:180SX, S14, S15, R33, R33, 300ZX

Posted 22 January 2014 - 06:38 AM

Not all parts with the prototype worked as expected, at least I found out what didn't work, still lots of work needs to be done. But whats confirmed is the SS Alpha system did work internally gated and made a difference in boost response. Further testing will proceed in a week or two.

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Still chasing for stock VCT cam gears. Please PM if any one in Vic has a good set for sale.

#21 HyperGear

  • Joined:28-February 06
  • Location:Australia VIC
  • Car:180SX, S14, S15, R33, R33, 300ZX

Posted 05 February 2014 - 08:16 PM

Here is the latest result for the ATR28SS1.5 in .64 from today, from my Sr20det S14 with No VCT controller.

Maxed out at 270rwkws, 20psi by 3850RPMs. Pump 98 fuel

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VS the Garrett 3071 and SS1 in .86 rear housing:

Pink light blue: GT3071
Red: ATR28SS1 in .86 Rear.
Thick blue: ATR28SS1.5 in .64 rear

Posted Image

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I would say this turbocharger is probably good for 260rwkws internally gated. We added heaps more boost in last run how ever it didn't hold and only picked up 10kws.

#22 TurbostyleR

  • Joined:12-October 03
  • Location:Australia QLD

Posted 05 February 2014 - 10:37 PM

are you using a t3 style exhaust housing for the ATR28SS1.5 in .64 rear

#23 AE86557

  • Joined:27-December 12
  • Location:Australia NSW
  • Car:S14

Posted 06 February 2014 - 06:55 AM

nice, is there a rough price for this turbo?

#24 HyperGear

  • Joined:28-February 06
  • Location:Australia VIC
  • Car:180SX, S14, S15, R33, R33, 300ZX

Posted 06 February 2014 - 08:08 AM

This particular one is in .64 T2x print. Internally gated.

#25 tumbleweed

  • Joined:04-March 12
  • Location:Australia SA
  • Car:Missile

Posted 08 February 2014 - 07:37 AM

So if i was chasing about 230rwkw , would i be best off getting a atr 28 g1 or g2? Will upgrade cam shafts , but would like some head room for a bit more power later on. Would like boost to come on as early as possible.

#26 pur40m

  • Joined:16-February 05
  • Location:Australia NSW
  • Car:180sx

Posted 08 February 2014 - 10:25 PM

Well the atr28ss1 would suit you perfect but in a .64 rear
His trail on his s14 made 258kw in a .86 rear so with a .64 rear will be down 5-10kw peak but pick up a lot of bottom end power and be on boost quicker which should make around 250kw which is 20kw above your goal 230kw which gives you abit of headroom

#27 tumbleweed

  • Joined:04-March 12
  • Location:Australia SA
  • Car:Missile

Posted 09 February 2014 - 07:14 AM

Excellent. Better go to work to earn some coin to get one!

#28 pur40m

  • Joined:16-February 05
  • Location:Australia NSW
  • Car:180sx

Posted 09 February 2014 - 09:03 AM

Tech is getting better and better these days and these have been tried and proven by himself to perform better than your std kando td05h or t518z and other garret gt2871r or gt3071r low mount options
I've even tried out the atr28g2 .64 fnt which is a older design and yet it still out performed my kando td05h18g which is a hypergear turbo and is still on the car now
I've already bought one of his atr28ss1.5 and yet to bolt it on and get it tuned as I've been busy lately
But it should perform even better

#29 tumbleweed

  • Joined:04-March 12
  • Location:Australia SA
  • Car:Missile

Posted 09 February 2014 - 09:09 AM

I was looking at a td05 which would make the power I want but they seem too laggy for what I want from the car. Garrett have some goods options but it comes with a higher price tag. Look after the smaller companies I reckon , especially being local. And the results speak volumes.

#30 -Gaz-

  • Joined:18-June 06
  • Location:Australia SA
  • Car:CBR, S14

Posted 09 February 2014 - 11:34 AM

Thank you to Hyper gear for posting your testing options and results here.





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