Hypergear Turbochargers and High flow Services Development thread

[GeorgesR34]

Had the FNT .82 type B turbine housing in last night along with the modified 6 bolt plate, stao is very helpful. Took it for a quick spin, its lot faster then what it was. the low gear response is very noticeable. It doesn't feels like the car's lazy down low any more. it pulls like a train from start all the way to red burning plenty of tires behind it.

I'll get it to a dyno for a quick check up and compare both results. Definitely worth the time, get it done while its free .

ps. Ask stao take you for a drive in his 350rwkws Hyperwagon, that thing's gooooooooooooooood.

[petero'nell]

I think some of yous might be able to help me here instead of starting a new thread. I've got the SS1PU installed, it runs fine and last tuned 262rwkws with miss firing. Since then I've got a set of Yellow jackets, changed CAS, spark plugs and the miss fire is still there. Its fine as daily but on full throttle it would miss and pop. Car is a 95 model R33 with Z32 ECU + Nistune and Z32 AFM with usual supporting mods.

[89CAL]

what plugs/what gap? What fuel pump? what does your dyno graph look like?

need to provide some more info so we can work out what the problem actually is

[jet2nv]

Deff go for a drive in staos 33 made me question myself about really wanting 300rwkw for a daily haha but Its still a firm yes

[petero'nell]

what plugs/what gap? What fuel pump? what does your dyno graph look like?

need to provide some more info so we can work out what the problem actually is

It has the propery plugs (some thing 7ES) at 0.8mm gap. Its sort of wavey uptop and tuner stopped at around 6000RPMs. We originally throught it was just spark plugs and planed to change them and set it back on the dyno again next day, how ever it didn't fix it. since then I've changed all the other bits and no luck. Can't think of any thing else.

Edited May 31, 2012 by petero'nell

[DVS JEZ]

Do u have another set of coilpacks u can try

[hypergear]

Miss firing could only be in the ignition setup. whats in it is your coil packs, spark plugs, perhaps looms to the coil packs, if its a S1 then the distributor, and CAS unless few of your injectors are not operating properly. Will be good if you can ask your mate with the same car for a favor to swap mentioned parts to see if a difference is made.

Also this was a billet SS1.5 prototype running off SS1PU's comp with SS2's turbine in a .63 rear housing, that I've tested earlier, this is also an preferably externally gated only turbocharger, now available to any one whom's interested in a fast responding 280rwkws on a high mount external setup.

[bjd]

My mechanic was saying this can happen when the harmonic balancer is slightly warped. He also said most people chase there tail replacing everything else. Worth a look anyway especially if everything else is in good order...

[petero'nell]

Do u have another set of coilpacks u can try

Turned out to be coil packs. Tried mate's stock ones and the miss fire went away and far out my car pulls crazy. Ordering a set of split fires, and finishing off the tune. Thanks guys.

[DVS JEZ]

Unfortunately i havent seen any good results from cheaper coilpacks. They normally end in tears

[hypergear]

This is a OP6 high flow job that we've done back in 2010, just got result sent in recently using factory actuator. I believe this is a pretty decent outcome for such boost level. Turbo is coming back for billet SS1.5 CHRA upgrade, it will be a good base for some comparison of effects from the 1.5's Billet wheel and FNT turbine setup.

[Rolls]

What do you guys think of this? Highflowed RB20 turbo on an rb25det neo, it used to make 230-240kw on an r33 motor and fall over at 6500, now it keeps on pulling all the way to 7500 hence the higher power output, dyno reads average/high compared to others in SA so could be closer to 250kw

GCG job with garret BB core and I'm pretty sure GT2871 spec turbine/compressor

Does this seem like a legitimate result with an rb20 turbo housing? it feels like 260kw with 2nd never hooking up on the street, even half throttle it wants to spin up.

boost - ran it up on 19psi but i would still taper down to 17psi with the controller and only made 5kw more in the midrange

http://img4.imageshack.us/img4/9011/img20120517221202.jpg

afr - detuned to 11.5:1 and made 254kw for safety.

http://img135.imageshack.us/img135/959/img20120517221116.jpg

Edited June 3, 2012 by Rolls

[hypergear]

It is a respectable result. I don't have results from high flowed R32 turbos to R33 yet, however to me the R33 turbine and R32 turbine housings are identical. I've had 2x GCG's R33 high flowed turbos came in for service in the past years and the turbine that they've had was a cropped TA34 Siera wheel, which is fine for that sort of housings.

Power wise 250rwkws seems to be the limit of what I call a good drivability configuration for the R33 high flows. I haven't trailed it person but customer's result revealed similar output.

There are other prototype profiles that I've trailed in the 21U rear housings, due to limitation of size, extracting power requires a large frame turbine, by doing so I've managed 293rwkws however the drivability is not desirable.

The power delivery of a massive turbine wheel in a tinny housing felt more linear (don't get me wrong, lots of people are chasing it). While a larger turbine housing with a smaller turbine wheel felt more dynamic (SS1PU's core design).

The SS1.5's CHRA in a OP6 high flow should produce aggressive power delivery, with better response to standard standard high flow profile. I'll be looking forward the trail when Trent's dyno is back on duty.

[Rolls]

That turbo I showed feels extremely linear, slow ramp onto boost, but it comes on very early, full boost by ~3200 rpm and just pulls linearly, no massive kick when it comes on boost.

[GTScotT]

Thats a nice results Rolls, something I would want in a lightweight RB powered car. Maybe a RB S13 or similar, which I might recommend to a mate who has exactly that.

Personally I would say something more aggressive would be better in an R33 and up, for the weight/pull factor.

[hypergear]

It appears the preferred out come for a GTT skyline would be linear and torquey down low with lots of power to burn tyres up top. That is when I engage acceleration the car produces a smooth and consistent pull that leads to a massive wheel spin. The SS and Type B rear housings were designed to encourage that behavior, that is obviously in combination of working with suitable supporting mods and an excellent tune map.

Flat spot with a sudden wheel spin means the combination is oversized for the engine, not preferred unless it is engineered for massive top end suitable for drag strips, We certainly don't use that in a bolton or high flow application unless been requested.

[Hanaldo]

It appears the preferred out come for a GTT skyline would be linear and torquey down low with lots of power to burn tyres up top. That is when I engage acceleration the car produces a smooth and consistent pull that leads to a massive wheel spin. The SS and Type B rear housings were designed to encourage that behavior, that is obviously in combination of working with suitable supporting mods and an excellent tune map.

Flat spot with a sudden wheel spin is not preferred unless it is engineered for a huge amount of top end power on drag strips.

Doesn't help with track times though

[hypergear]

But having said that it also depending on how much power is needed and purpose of setup such as types of suspension, wheels tyres and driver's skills. The combination of turbo can be altered significantly to suit the purpose of the upgrade. Ie, I don't think my 350rwkws setup can out run John with 247rwkws setup in a tight track, how ever in a big and open track would be otherwise.

I used to run a larger turbo for Winton, and a smaller one for Calder.

[jet_r31]

Whats your 350rwkw setup stao? G3 on E85?

cheers

darren

[hypergear]

The 350rwkws was made by a G2.5 in a type B rear housing on E85 internally gated. The G3 on type A internally gated housing made 358rwkws with 7 degrees regarded timing in fear of bending con-roads. It should be sitting around the 390rwkws mark with time added.

This is the G3 we just pulled off the neo motor. Looking at the rear weld on adaptor it looks very restrictive. It has a big lip inside and as u can see by the soot marks the 3inch dump pipe ismuch bigger that the actual outlet

Now it is:

With all broken studs removed of course.

2ndly before installation I found the actuator had been short lengthen to lower boost. Doing so leaves the wastegate unsealed causing massive amount of lag. And that is a lag caused by negligence. It must be held shut and loaded as photo shown on the right, do contact me for a lower psi actuator if lower boost is preferred for what ever reason, but don't unload the supplied actuator, it does not mean the same thing.