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HyperGear SR20det turbocharger Innovation, Evaluation and Testing - Hardtuned.net - Page 18

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HyperGear SR20det turbocharger Innovation, Evaluation and Testing 

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#511 Dose Pipe Sutututu

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

Posted 02 December 2016 - 06:30 AM

yes there will be

#512 REAL OLDIE

  • Joined:02-September 13
  • Location:Australia QLD
  • Car:STARION

Posted 02 December 2016 - 12:43 PM

Thanks DPF but would you care to explain exactly what the change would be based on first hand experience please??

Thanks DPF but would you care to explain exactly what the change would be based on first hand experience please??

#513 Dose Pipe Sutututu

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

Posted 02 December 2016 - 05:07 PM

Boost will come on much more smoothly and will hold up the rev range.

Where as an actuator much lower than your targeted boost with a boost controller will come on aggressively and spike and often drops boost up top when it doesn't have enough force to keep the internal gate shut against the exhaust pressure acting upon it.

I always like have wastegate about 0.5bar off targeted boost for good boost control. No point running a 0.5bar actuator trying to control like 1.5bar.

#514 REAL OLDIE

  • Joined:02-September 13
  • Location:Australia QLD
  • Car:STARION

Posted 03 December 2016 - 05:33 AM

Appreciate your reply.
My thinking is /was that the stronger spring might help delay wastegate creeping open and help the boost rise faster Am I thinking correctly ??

#515 Dose Pipe Sutututu

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

Posted 03 December 2016 - 06:56 AM

correct, but still good to have an electronic boost controller to keep the wastegate shut during spool

#516 REAL OLDIE

  • Joined:02-September 13
  • Location:Australia QLD
  • Car:STARION

Posted 03 December 2016 - 08:20 AM

Tight budget prevents an EBC unless Santa pops 1 under my tree.

#517 Dose Pipe Sutututu

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

Posted 03 December 2016 - 08:49 AM

If it's a track car, which I believe it is through our previous conversations then just get an actuator as close to or exactly the boost you want to run and loop the pressure source hose straight onto your actuator.



#518 REAL OLDIE

  • Joined:02-September 13
  • Location:Australia QLD
  • Car:STARION

Posted 03 December 2016 - 02:36 PM

Am running an ext gate on a SP mani with a GT3076R with a SP AR82 turbine on a 2.3 4G63 TC

#519 Tom Tucker

  • Joined:21-September 06
  • Location:Australia NT
  • Car:S15

Posted 04 December 2016 - 08:10 AM

I gave up on internal gates years ago. External ftw

#520 ColS15

  • Joined:13-June 12
  • Location:Australia NSW
  • Car:S15

Posted 04 December 2016 - 03:02 PM

I hope internal gates are the go with efr series turbochargers, garret type/style are better with external.

#521 HyperGear

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

Posted 22 December 2016 - 09:59 AM

Sorry haven' t been here lately, I've been busy with RB20det and 2JZGTE projects, as well as trying to get everyone's turbos ready for the break.

with external gates, they are way better performers because the exhaust flow is no longer restricted by the size of the exhaust pipe. I've done an experiment with Rb25det using an ATR45SAT turbo, 3 inches turbo back exhaust, car made 320rwkws with exhaust on and 350rwkws with exhaust off on pump 98 fuel. But running a 50mm gate on manifold with the same size exhaust connected is good enough to make 370rwkws.

Everything with engine setup is about flow. There are few reasons to "not been able to holding boost" that apply to any waste gate.
1. Can simply be if the springs is too soft.
2. Or if there is an restriction on the intake, cooler or the exhaust means the turbo can not flow the amount of air required keeping an engine running at X psi of boost at Y RPM.
3. Compressor is not efficient enough to supply the amount of air required keeping an engine running at X psi of boost at Y RPM.
4. Turbine side is too small that creep high back pressure. (engine also gets abnormal amount of knock in this scenario.)
5. Check for pressure leaks.

If the turbo is the right size for the engine and boost level, assume no leaks. with a 4 inches induction pipe connected, drop the exhaust, and measure pressure drop from the turbo's outlet and after throttle body.
1. If pressure is obvious, car might requires bigger cooler or cooler piping or make sure there is no 180 degrees cooler pippings.
2. If boost pressure held without exhaust connected it will just be an restrictive exhaust.
3. If boost pressure drop between two ends of the cooler is minimum it could possibly just been an waste gate spring.



So if pressure drop is minimum, check gate spring.

#522 blingcommander

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

Posted 22 December 2016 - 11:29 AM

Care to post up some 2j results and specs?

#523 HyperGear

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

Posted 22 December 2016 - 02:22 PM

Made 355rwkws @ 20psi P98 fuel. Full boost by 3500RPM. Clutch is slipping and Haltech map sensor is maxed.

Posted Image

Posted Image

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#524 HyperGear

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

Posted 22 December 2016 - 02:30 PM

2JZ stock none VVTI
V160 6 Speed
200R Diff
Drift Manifold
50mm Turbo smart Gate
My ATR45SAT CBB Turbo
800cc injectors
450L/H Walbro pump
3 inches turbo back exhaust
Haltech PS2000 ECU
Chequered tuning Tune.

#525 andhey

  • Joined:10-January 11
  • Location:Australia VIC

Posted 02 January 2017 - 06:40 PM

Had my car tuned by Trent the other month and it made 250kw @ 20psi on 98 with the ATR28SS2. The boost controller dial was maxed (though unit specs say it's capable of 36psi?) but I think Trent said this was about the safe limit for this setup. Might consider e85 down the track but powerfc and I drive the car from melbourne to winton for drift days so I don't feel like carrying a heap of Jerry cans haha.

- S14 SR20 with VCT and std bottom end
- Poncams
- Tomei dump to HPI Dual front pipe to 3" exhaust straight through with a varex on the end
- 3" intake + Z32 + Apexi pod
- Nismo 740cc
- ARC FMIC (non return flow)
- Walbro 460 hardwired
- Powerfc
- HKS EVC 5 EBC

Posted Image

Posted Image

Edited by andhey, 03 January 2017 - 11:29 AM.


#526 pur40m

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

Posted 03 January 2017 - 09:16 AM

View Postandhey, on 02 January 2017 - 06:40 PM, said:

Had my car tuned by Trent the other month and it made 250kw @ 20psi on 98. The boost controller dial was maxed (though unit specs say it's capable of 36psi?) but I think Trent said this was about the safe limit for this setup. Might consider e85 down the track but powerfc and I drive the car from melbourne to winton for drift days so I don't feel like carrying a heap of Jerry cans haha.

- S14 SR20 with VCT and std bottom end
- Poncams
- Tomei dump to HPI Dual front pipe to 3" exhaust straight through with a varex on the end
- 3" intake + Z32 + Apexi pod
- Nismo 740cc
- ARC FMIC (non return flow)
- Walbro 460 hardwired
- Powerfc
- HKS EVC 5 EBC

Posted Image

Posted Image
Which turbo ?

#527 andhey

  • Joined:10-January 11
  • Location:Australia VIC

Posted 03 January 2017 - 11:28 AM

Lol my bad. Atr28ss2

#528 pur40m

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

Posted 03 January 2017 - 05:58 PM

Not many people seem to be able to match his 300kw on pump 98 oct fuel out of his ss2
Must be his larger bc s2 cams and aftermatket manifold and slightly higher boost making that extra 40-50rwkw
Best i got could manage out of his ss2 was 280rwkw but was on 25psi and e85


#529 RyanSD180SX

  • Joined:27-April 14
  • Location:Australia QLD
  • Car:94 180SX Type X

Posted 04 January 2017 - 07:17 PM

View Postpur40m, on 03 January 2017 - 05:58 PM, said:

Not many people seem to be able to match his 300kw on pump 98 oct fuel out of his ss2
Must be his larger bc s2 cams and aftermatket manifold and slightly higher boost making that extra 40-50rwkw
Best i got could manage out of his ss2 was 280rwkw but was on 25psi and e85

I was wondering if porting/polishing the head and an aftermarket manifold would help.
In the end though the peak kw figure isn't too important, it's more about area under the curve.
I plan on running my SR with a late 2015 ATR28SS1.5 on E85 soon which I guess would get around 270rwkw but really my aim is to get into the 11's.
If I can run that quarter mile time it's certainly more than fast enough for the street lol.

Edited by RyanSD180SX, 04 January 2017 - 07:21 PM.


#530 pur40m

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

Posted 04 January 2017 - 09:14 PM

Thats what i was aiming at
Running a 11s in street trim with shit driving
But end up swapping it before i got the chance
Best i ran was a 12.3 @ 122mph with the ss1.5 on 260kw
Im shore with a better driver that would have easy been 11s with that mph
I never got the chance to run it with the ss2 extra 20kw would have netted me 125mph traps and 12.1 or 11s with lazy launching


#531 pur40m

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

Posted 04 January 2017 - 09:18 PM

Peak numbers would matter at the track or drags as you can really stretch it out
But for everyday street driveability and drift area under curve matters 10 times more than peak power

#532 HyperGear

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

Posted 06 January 2017 - 09:22 PM

Far as car wise, what it might be giving me a bounce would be the PWR cooler with 3 inches piping, Aftermarket exhaust manifold, and everything else are pretty much same as what you guys are using. It was a forced motor built engine, far as I know it has forged pistons, conrods, BC S2 cams and that was it. This was one of the best evaluation cars I've ever bought, it needed very little work and kept on pulling the numbers without breaking down. The SS2 is something that felt pretty good to drive and managed to pull off 308rwkws @ 24psi P98 fuel, which is about the same as what it did on my RB25det Neo.

This is my curve. Engine spec wise I've asked if Donny did any porting on the head, which he said he did not.
Posted Image

Posted Image

#533 liambrm

  • Joined:07-March 07
  • Location:Australia VIC
  • Car:1993 180sx

Posted 21 January 2017 - 10:15 PM

View Postpur40m, on 03 January 2017 - 05:58 PM, said:

Not many people seem to be able to match his 300kw on pump 98 oct fuel out of his ss2
Must be his larger bc s2 cams and aftermatket manifold and slightly higher boost making that extra 40-50rwkw
Best i got could manage out of his ss2 was 280rwkw but was on 25psi and e85
i made 298 on trents dyno with a cat and internal gate on an ss2
made 285 on springys which is a lil low and wheel dyno both on 98

View Postpur40m, on 03 January 2017 - 05:58 PM, said:

Not many people seem to be able to match his 300kw on pump 98 oct fuel out of his ss2
Must be his larger bc s2 cams and aftermatket manifold and slightly higher boost making that extra 40-50rwkw
Best i got could manage out of his ss2 was 280rwkw but was on 25psi and e85
i made 298 on trents dyno with a cat and internal gate on an ss2
made 285 on springys which is a lil low and wheel dyno both on 98

#534 liambrm

  • Joined:07-March 07
  • Location:Australia VIC
  • Car:1993 180sx

Posted 21 January 2017 - 10:21 PM

chinese cooler for both

#535 pur40m

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

Posted 22 January 2017 - 04:03 PM

View Postliambrm, on 21 January 2017 - 10:21 PM, said:

chinese cooler for both
Nice what other mods and car
Stock manifold and cam ?

#536 liambrm

  • Joined:07-March 07
  • Location:Australia VIC
  • Car:1993 180sx

Posted 23 January 2017 - 03:53 PM

no built motor spaghetti manifold sotck intake mani 260in 264 ex

#537 pur40m

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

Posted 23 January 2017 - 06:33 PM

View Postliambrm, on 23 January 2017 - 03:53 PM, said:

no built motor spaghetti manifold sotck intake mani 260in 264 ex
I assume s2 cams
So spaghetti manifolds do make a difference at those power levels

#538 liambrm

  • Joined:07-March 07
  • Location:Australia VIC
  • Car:1993 180sx

Posted 24 January 2017 - 04:26 PM

fully built motor cams 260in 264 ex

#539 liambrm

  • Joined:07-March 07
  • Location:Australia VIC
  • Car:1993 180sx

Posted 24 January 2017 - 04:50 PM

usually the exhaust and cams will restrict you massively when going for power

#540 andhey

  • Joined:10-January 11
  • Location:Australia VIC

Posted 25 January 2017 - 05:04 PM

hey pur40m are you making 280kw with 740cc's and a FPR? was considering switching mine to e85 at some point later this year





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