Atp R33 Stage 2 Hiflow Turbo

[Fry_33]

Hi all,

My turbo standard R33 turbo is dying and one of the replacement options I'm considering is the ATP stage 2 hiflow. I have been searching but I can't really find a great deal of info on them. Now surely there are a few of you out there who have used them. If so can you please post up your experiences with them. Mods and a power graph would be great for comparison.

I am fairly sure that I'll need to upgrade my standard injectors if I go this way or use an adj fuel pressure regulator (less preferred option)

Thanks.

[evil_weevil]

I'd also be looking at a z32 AFM for that appication mate

[_Ryan_]

i would also be interested in the outcome, another option is Eastern Turbo Service(think that is their name) in bayswater. They offer a similar service.

-Ryan

[stolen_s15]

Watching with interest also. Anyone have use these things?

[SABBAi]

Ok guys I can give you some insight on specs, etc.

ATP do not make a stage 1 or stage 3 high flow. They do, however make a stage 3. Don't ask me why it's like that, I don't know!

Basically, the housings (that you supply) are machined out to fit much larger compressor and exhaust wheels. The core is a new T3 item, oil and water cooled. It is a standard bush bearing core. The exhaust and compressor wheels are found in Sierra Cosworths. When 'highflowed' to these specs, they are commonly known as Sierra-Sierra turbos. They are rated at 450hp.

You will be looking at around $1495 to get this done.

Speak to Kyp Matheou.

9569 4764

ATP

1198 Dandenong Road

Murrumbeena 3163

I'm guessing it's not a bad turbo to have, and I looked into them when I was looking at getting mine high flowed. I bit the bullet and bought a GCG highflow instead. The ball bearing new garret core of those things (basically the same specs, exhaust, comp wheels, etc) was too much of a benefit for my application. They aren't cheap though, $1900....

[R31Nismoid]

$1500 for a bush bearing hi-flow is a bit rich

[stolen_s15]

$1500 for a bush bearing hi-flow is a bit rich

Thats what I was thinking.

[SABBAi]

yes it is. That is why I didn't go that way as well. I found a great condition low km GCG one for less than that.

[wizlb]

Can John at Unique Auto Sports.

[Fry_33]

Scott, I may have to disagree with some of the stuff you said..

I talked to Kyp the other day and said there are about 8 different stage turbos from him for the RB25DET.

Stage 1 - uses standard RB25 compressor, Garrett Core and ex turbine ~ 200rwkw [ ~ $1320 ]

Stage 2 - uses bigger than standard compressor wheel, Garrett Core and ex turbine (back cut) ~ low 200rwkw range (my guess 220or so) [ ~ $1430 ]

Stage 3 - about 250rwkw. Can remember what the turbo consisted of. [ ~ $1680 ]

I didn't bother asking about any further ones as they don't interest me.

I can't remember whether I asked if they use bush, roller, or ball bearing core. I assumed ball bearing but I don't like assuming. I should probably ask Kyp and clear it up.

The power figures above are approx figures Kyp gave but they will vary between dynos, how much boost you're running and accompanying mods.

[R31Nismoid]

It wont be ball bearing for $1400 - which pushed it towards expensive bush bearing

[Wheezy]

You could quite easily make 200rwkw on the stock turbo with supporting mods....There are quite a few members here doing so. I think with a budget around the $2500 mark and up Id be looking GT-RS if I was in your position. No messing around then, its proven, even has nice little pictures to help you install it yada yada yada.....

[discopotato03]

Not for me to say what you should do but some interesting facts .

Firstly , I doubt very much they use the actual motorsport compressor used in the RS500's turbo and it was just a tarted up Garrett compressor modded to make it hang together at high revs for extended periods . It would not be a responsive thing in a road car .

Secondly , the RS500's turbo is a dog . The only thing thats any good (and only if you use a TA34 style turbine) is the turbine housing because of its redesigned integral wastegate and vent path .

Your calls but I'd be trying to find the HKS T3 flanged IW GT28 turbine housing , they were fitted to 2530's , 2540's and the RB specific GT-RS . Once you have that any of the better GT25/28 BB cartridges will bolt on .

Cheers A .

[Fry_33]

Thanks for the input guys.. I will have to research a bit more me thinks.

I currently have 180rwkw with std turbo, basic mods, bleedvalve (12psi), PFC. I know I can make "200rwkw" but this does depend on the tune and especially the DYNO.

I don't want the turbo to stick out like dogs balls when I pop the hood so that's why I have been looking at the hiflow options. I haven't been looking at the 250rwkw mark as I thought it might be a bit of overkill for the street and daily driver. I am also worried about increasing the lag too much over standard. Saying that I figure I will need to either upgrade injectors or FPR and AFM for anything between 200rwkw to 250rwkw anyway.

Thanks Discopotato, I haven't looked where I could find all of these parts yet but I will do my best.

Edited November 30, 2007 by Fry_33

[grigor]

Correct me if I'm wrong, but don't the USA and Au have a free trader agreement? So no duty and with the $Au so high, surely a much better deal is to be had buying brand new from the US.

[Fry_33]

Apologies Scott.. I don't know why but I talked to Kyp today and he says he only does a stage 3 version??? I feel like a moron, but I was just saying what I was told and wrote down, weird.

Looks like the Stage 3 is rated up to 250rwkw @ 15psi, depending on your mods etc. ~$1680 changeover.

It uses a bush bearing core deisgned by Kyp. He tried roller bearing core with this setup in the past but it created compressor surge.

He will mod your oil lines and banjo bolts etc as well.

[eddieeeee-ro]

i have the same mods as you and make the same power. i'm thinking to get a 25/40 or GT-RS

group buy? haha

[Fry_33]

i have the same mods as you and make the same power. i'm thinking to get a 25/40 or GT-RS

group buy? haha

After the misinformation about the ATP turbo I started to look around at a few more. Not because the ATP turbos wouldn't be any good but it will give a different result to the one I'm after. I am now looking at getting a 2530, should allow me to get around the 220-230rwkw mark. Sounds like they are a very responsive turbo. I read a few posts that said the 2540 uses the same turbine as the 2530 but the compressor of the 2540 isn't matched as well to the turbine as the one in the 2530. I think it was Gary (SydnetKid) that mentioned this as well. I think they ended up not going with the 2540 for this reason and made the GT-RS.

[SABBAi]

Apologies Scott.. I don't know why but I talked to Kyp today and he says he only does a stage 3 version??? I feel like a moron, but I was just saying what I was told and wrote down, weird.

Looks like the Stage 3 is rated up to 250rwkw @ 15psi, depending on your mods etc. ~$1680 changeover.

It uses a bush bearing core deisgned by Kyp. He tried roller bearing core with this setup in the past but it created compressor surge.

He will mod your oil lines and banjo bolts etc as well.

No problems

When I spoke to him on the phone he gave me different answers that when I went in the see him.

[Al]

Hey Phil,

For your purpose i would also recommend a good second hand 2530 or 2535, but make sure they have the right flange and are NOT the sr/rb26 turbos (smaller).

Kyp was not lying when he stated that the bb hi-flows surge. The 2nd hand hi-flow i purchased (and discussed with you) was bb and had chronic compressor surge at light throttle. It was a good thing that the guy i sold it too (warned him before purchase) loved the "dose" sound and thought it was "cool".