Avo Exhaust Housings On Hiflowed Turbo

[R31Nismoid]

From what i was told is that you can not exceed 210rwkw with the just the housing being machined you need it to be larger. they said that once you change it for example if you put the avo one on there you will atleast get about 260 to 280rwkw.

Ah thats bullshit mate Whoever told you that have absolutely no idea what they are on about.

Countless people have made 250-260rwkw with the R34/VG30 rear housing with GCG Hi-flows, and other hi-flows from places like ATP, MTQ and so on.

These use the FACTORY turbo housing machined up to suit. So in 'flowed' form, they flow whats required.

A couple of people now (from Vic) have PM'd me with a similar questions, and i reckon its the same 'place' giving out this info as they dont know how to tune and are using the turbo as a scape goat.

Surely the sheer amount of documented results on this forum is enough to show you what they can produce easily.

When you think about overall costs, hi-flowing + AVO rear housing etc etc... I would be surprised if it isnt signifigantly cheaper to purchase a proper frame GT3076 or something and will do exactly the same job.

Pete - the turbo might also be nosing over due to the compressor, being the GCG used to be i two different sizes, and the bigger was stopped due to the comp wheel being too far over-sized and surged in a lot of situations

[Bass Junky]

Ash.

Yeah, I wouldn't be doing anything with the back end until I install this temp gauge thingo.

But if it's only marginal, I wont be spending $850 on a few more kilowatts.

Much prefer to put away for a HKS2835 ProS...... Cos benno says so

[R31Nismoid]

Yeah $850 isnt justified by any means in my books on what really isnt much more than a gamble/hunch.

[discopotato03]

I reckon a Neo RB25 could possibly get away with a real GT3071R and one of Garretts GT30 IW T3 flanged turbine housings . That way you get the exact same compressor wheel as a HKS GT2835 Pro S and the non cropped GT30 turbine . I think the Neo's variable cam timing could pull the bottom end up a bit better than the R33 version and thats probably why Nissan used the larger OP6 type turbine housing on R34 GTt's . Also with Garretts turbine housings the available A/R ratios are 0.63 0.82 and 1.06 , the 2835 Pro S's are 0.68 and 0.87 .

For a GT3076R I would always use one of the the above mentioned Garrett GT30 IW housings , a good chance you could buy such a turbo complete and know the housing is designed to suit the turbine . Once you move away from OEM turbine housings its generaly best to use one designed for the turbocharger , if you can get one that bolts to the std manifold the rest is pretty straightforward .

Cheers A .

[LTHL34]

Yeah, I'm very interested to see this as well.

LTHL. 210rwkw sounds about right from the STD housing, non high flowed.

My car (and a few other highflows R34s) seem to max out at 250rwkw and this is seemingly due to the exhaust housing.

oblivio we eagerly await your results.

Im talking about a hi flowed turbo 210rwkw.

[LTHL34]

Ah thats bullshit mate Whoever told you that have absolutely no idea what they are on about.

Countless people have made 250-260rwkw with the R34/VG30 rear housing with GCG Hi-flows, and other hi-flows from places like ATP, MTQ and so on.

These use the FACTORY turbo housing machined up to suit. So in 'flowed' form, they flow whats required.

A couple of people now (from Vic) have PM'd me with a similar questions, and i reckon its the same 'place' giving out this info as they dont know how to tune and are using the turbo as a scape goat.

Surely the sheer amount of documented results on this forum is enough to show you what they can produce easily.

When you think about overall costs, hi-flowing + AVO rear housing etc etc... I would be surprised if it isnt signifigantly cheaper to purchase a proper frame GT3076 or something and will do exactly the same job.

Pete - the turbo might also be nosing over due to the compressor, being the GCG used to be i two different sizes, and the bigger was stopped due to the comp wheel being too far over-sized and surged in a lot of situations

thanks for all your help guys i really appreciate it.

Edited October 11, 2007 by LTHL34

[Abo Bob]

Is Nismoid trying to sell you something? No. Look at the motivations before you believe everything you hear.

I have a highflow GCG turbo on my car. The highest it has made is 272rwkw on a dyno dynamics dyno. It made 257 at Autosalon on the Mainline dyno after I had fiddled with it. Last retune to fix my fiddling was 262rwkw, again on a dyno dynamics dyno. It does 11mph at the strip and weighs about 1600kg.

[LTHL34]

Is Nismoid trying to sell you something? No. Look at the motivations before you believe everything you hear.

I have a highflow GCG turbo on my car. The highest it has made is 272rwkw on a dyno dynamics dyno. It made 257 at Autosalon on the Mainline dyno after I had fiddled with it. Last retune to fix my fiddling was 262rwkw, again on a dyno dynamics dyno. It does 11mph at the strip and weighs about 1600kg.

i understand that mate, and im not trying to argue. its just that when i started asking questions about these things to mechanics i got these answers and thats why i wanted to hear your what all you guys had to say.

[Abo Bob]

No probs mate.

I asked, a long time ago, an extremely well thought of workshop about highflows and was told that I would never get over 220rwkw. Well I made 228rwkw on 13psi through the auto my car used to have.

The sad fact is that it is extremely rare for a workshop to be totally honest with everybody. There might not actually be one in existence. On the other side of the coin, people on here are sometimes prone to exaggeration and shit talking. Unfortunately, each person has to take it all in and decide what to make of it themselves. Hey, it's part of the fun and the challenge of modifying a car.