High Flowing Turbos

[Timtam72]

Hey I'm new to sau, bought a series 2 R33 Gts-t and I'm wanting to high flow my factory turbo, I've looked through a whole bunch of threads but haven't really found any specific measurements for the diameter of the compressor wheel. I'm fairly sure the stock wheel is 49mm and I'm wondering how much bigger of a wheel can the housing fit? Also I'm unsure of the total height of it, if that makes a difference? Thanks heaps

[Piggaz]

Hypergear thread. Have a read.

[Humbla]

Gcg . :-)

[GTSBoy]

Hmmm. GCG vs Hypergear in a battle of performance and value. I wonder which will win.

Italics not specified. Put them in where you think they will have the most influence.

[Humbla]

Gcg rebuilt and hi flowed it,ten years and a few hundred thousand is still going strong. :-)

[GTSBoy]

Yuh, but has their offering changed at all since that time? I suspect not. HG's put a lot of effort into both the exhaust profile and the comp wheel design in the last few years to maximise response and output.

[KiwiRS4T]

I got a turbo highflowed by GCG about 6 years ago for nearly $2k.

Would choose Hypergear today (if I were in Aus - actually have a top turbo man locally) - continuous development, better prices, feedback.

[Blackkers]

Hypergears highflow made up to 322 rwkw on a stock motor e85. 280ish on 98 from memory. If you want the most powerful highflow that's the way to go. $860 too

[V28VX37]

Yep definitely talk to Stao @ Hypergear.

[zoomzoom]

What are your:

a) Goals (ie just a bit more top end power, whilst retaining some low RPM response)

b) Existing supporting mods

c) Budget

[Timtam72]

What are your:

a) Goals (ie just a bit more top end power, whilst retaining some low RPM response)

b) Existing supporting mods

c) Budget

Goals power wise I'm looking for some 250+kW at the wheels.

Supporting mods, nothing at the present time apart from 3" cat back exhaust, pod filter, adjustable boost controller. However I do plan on buying splitfire coil packs and new spark plugs. As well as a new ECU, thinking of tuning it to run E85 but since I'm in canberra there's not many places to get it so I'll need it to be able to read both ethanol and octane.

Budget is around 2-3k willing to spend more, just need more time to save the money.

[Timtam72]

Keep seeing GCG and Hypergear, are they just companies who high flow the turbo for you? Do they recommend the turbine size and all that shit or you got to choose it? Sorry if this is a stupid question

[chiksluvit]

they are two of the main companies well known in skyline community which provides high flow service

there used to be a few more some years back, but they are either out of business or just stopped doing them

there's also precision turbo in Wetherill park NSW that does high flow as well. Having used high flow turbos from all three companies I personally prefer hypergear if you're chasing power on a budget, precision is also good as well but they do cost a little more for their ball bearing high flow, which gives a good balance between power and response,

good thing about hypergear is they are constantly R&D to improve their products like what GTSBoy said, their latest highflow design is a more competitive product than the GCG high flow I think

[zoomzoom]

Goals power wise I'm looking for some 250+kW at the wheels.

Supporting mods, nothing at the present time apart from 3" cat back exhaust, pod filter, adjustable boost controller. However I do plan on buying splitfire coil packs and new spark plugs. As well as a new ECU, thinking of tuning it to run E85 but since I'm in canberra there's not many places to get it so I'll need it to be able to read both ethanol and octane.

Budget is around 2-3k willing to spend more, just need more time to save the money.

If you're replacing the turbo yourself, set aside around $1k for a turbo. The standard r33 high-flow from hypergear is a fairly proven item. I use one as well. Keep in mind you'll probably spend a few hundred more on gaskets and a new set manifold studs and nut kit. (might as well fix the manifold while the turbo is off)

Is your vehicle supported by nistune? If not then you are looking at an aftermarket flex-fuel capable ecu. The cheapest would be an adaptronic e440d. Even if you get that at a good price, with the accessories (air temp sensor, ethanol sensor, loom) you wont have any change from $1.5k

Then factor in +$1k for a GOOD tune, where the tuner has paid attention to partial throttle drivability and fuel consumption. That would be a single tune on one fuel, that wouldn't be a flex tune with runs on 98 & e85.

[Dose Pipe Sutututu]

Might as well aim for 300kW

300kW is the new 200kW

[V28VX37]

Might as well aim for 300kW

300kW is the new 200kW

I'd like to see a build from a stockish car to a reliable 300rwkw for just $2-3k...

[GTSBoy]

Yuh, it's a little hard. Turbo ~$1k. Injectors ~$500, fuel pump ~$200, AFM ~$250, ECU ~$800 at best. Add in coil packs, turbo inlet, possibly a dump, some money for fitting and/or bits to fit it all up with, wiring mods etc. It's a $4k proposition more likely.

[iruvyouskyrine]

And a tune is another $450-1000 venture depending on who you go with. No point having all the shiny go fast bits without making them useful

[Dose Pipe Sutututu]

I'd like to see a build from a stockish car to a reliable 300rwkw for just $2-3k...

It's going to cost the same to make 250kW

[Humbla]

I spent ten grand on my 33 doing mods ten years ago,do I regret it not on your Nelly.

She still goes beautifully, do it right the first time saves you heaps in the end. :-) :-) :-)