Gts-4 Turbo Upgrade

[OMGGTR]

Hi guys,

Wanting to strap on some real horses because 158kw isent enough coming from my gts4 and most likely less, I'm Looking at 250awkw and I duno crap about turbos or prices so! i got a quote of $1600 for a ATR43G3 520HP turbocharger with high pressure actuator and braided oil feed line.

I'm looking for criticism and any ideas...input at all with regards to the turbo i got quoted with and if there is any beta options for my gts-4 thanks!

[paulr33]

GTS4 with RB20 or RB25?

i would go ball bearing highflow from gcg.com.au

[boostn0199]

that turbo that your talking about is the hypergear one and they are good turbos for there price but as pual said if you want only 250 then a hi flow would be a better option since keeps it looking more stock and less fabrication in intallation but if you want more power down the track will be better to go for the atr43

[OMGGTR]

Its a rb20 its not for track just street use and yeh dont want cop hassle so i do wana keep it looking fairly stock but i do want the power

[l_uk3y]

I just bought that Turbocharger (ATR43g3) for my RB25 (internal gate). Product itself arrived in good time and looks fantastic sitting on the floor. While i havent finished the install yet. I can see that it looks fairly bolt on, except for the turbos water lines not being needed anymore, and a short segment of intercooler piping will need making up. They are the main things that stand out as needing a bit more effort.

Which rear housing you looking at? I opted for the .63 for better response.

That price is a bit higher then i paid new from Hypergear. Is that including install or tune etc?

Also. Do you have a suitable Fuel pump and set of injectors to suit the specified power level?

Cheers. Luke

[OMGGTR]

Ye, The price was given just for the turbo itself man no tune or install i think.. he didn't say much.

we left the rear housing as is cos i duno crap about turbos man so i left that work to him,

as for fuel pump and injectors their next on my list Bosch 040 and some sexy injectors.

i wont be installing until i have all the required parts as I'm buying as i earn the cash its going to be a patient build.

Luke let me know how she goes when u finish the install because I'm really considering the ATR43G3.

Cheers.

George

[Roy]

Try and go for a ride in a 250awkw RB20 before starting the mods. If you are chasing a number I suspect you will find that the car will be far too laggy and not to your liking. Especially if you are trying to do it with an internal gate turbo on the std manifold. Best bet as always is find yourself a 320hp HKS or Apexi turbo and throw it on for a grunty 220awkws. Unless of course you like the lag and hit of a turbo that is a tad too big. And if the turbo you are looking at is rated for 520hp then i say it would be a "very laggy/big hit of power" type of delivery

[R31Nismoid]

Why get a 520hp turbo for 250rwkw? Pointless.

IMO settle for 230rwkw and get a HKS2530. Best turbo for the job unless you setup upto 260-270rwkw and get a trust kit or something. However it will be noticeably laggier.

230-260rwkw is a nomans land for RB20's it seems. Not a lot suits.

[hypergear]

Well you are going to need lot of boost to crack a stock RB20 to 250 All Wheel KWs. I really don't see any thing smaller then a 3076 can do that unless that.

The price quoted also includes a high pressure actautor.

[R31Nismoid]

3076 to make 250rwkw on a RB20? Hardly.

If a 2530 can do 230rwkw why you do need a turbo that will make over 300rwkw/20psi on a RB25?

[hypergear]

If you owned a RB20det (which I owned 3) you will find they are very difficult to make any thing above 230rwkws. Same turbo at same boost level made heaps more power on a RB25 and even my CA (worked). lol

I was asked to quote a turbo that can do 250KWs Not Rear wheels, But All Wheels with a stock RB20det a GTS4, which you are going to lose about 20% to front wheels. So even you can managed 230rwkws off a HKS2530 on a Rear wheel drive car does not mean you see it on a all wheel drive car.

I believe 3076 profile in .69 rear (I'm also considering .63 since its a smaller engine) is good for his application. We can build turbos in any specs, so feel free to give your opinion based on RB20dets.

[R31Nismoid]

You can make 260rwkw with a TD06 kit, it's not hard, and they are not a 600hp turbo. So where is the logic in neding 600hp worth of turbo for 250rwkw?

I've actually owned two RB20's over the years as well btw.

But All Wheels with a stock RB20det a GTS4, which you are going to lose about 20% to front wheels. So even you can managed 230rwkws off a HKS2530 on a Rear wheel drive car does not mean you see it on a all wheel drive car.

230rwkw, same shit AWKW/RWKW. I take it you do not understand how the 4WD system actually works?

So... a bit of information.

It's be tried, and proven 5 times now that AWKW/RWKW with ATTESSA is near enough to the same. It is NOT fulltime 50/50 split like a WRX.

DirtGarage tested it with i think 400rwkw give/take and i think the difference was less than 10kw. So put that down to the dyno variance if you need to attribute to anything.

The transfer case does not "magically" suck up 20% at all in factory form. Never has, never will.

So you will make 230rwkw from a HKS2530, just like everyone else. It will be 230awkw with the Nissan 4WD system.

[R31Nismoid]

and from a user on the same topic just the other day

Just to make it a little easier to absorb the awkw = rwkw for gtrs, I had mine tuned at 340awhp. Last month we had a dyno day but it was a 2wd dyno and so I had to drop the front shaft to go on. Guess what? Same power. Its a different dyno and a hotter day too so its up to you guys to decide if the dyno and temperature would make that extra 10% difference in power. To me? Its f**k all difference.

[hypergear]

Regarding to rwkws and awkws I've seen different. I will dig some dyno readings out tomorrow.

any way, based on the TD06 that we high flowed its almost identical to a GT3076 52T. I didn't even have to scrap materials off the exducer of the turbine housing and inducer of the comp housing. Since I've managed 248rwkws with that setup at 21psi so possible 250rwkws+ externally gated at 24psi.

Request was to build a bolton turbo. doesn't sounds like he's not going to run external gate and change every thing to suit it. Well up to the customer.

[R31Nismoid]

The OP asked for idea's.

I am simply saying his idea of 250rwkw, should be revised to a slightly lower level, with much higher benefits.

Why would he want a poor and laggy 250rwkw when he can have a reasonably responsive 230rwkw?

550hp comp wheel vs what, 350hp.

I say reasonably responsive as at the end of the day its still a RB20. Bugger going ~150hp bigger in turbo for just 20rwkw is to put it simply, silly.

2530 will have a much meatier range. While the lag buster is spooling, the HKS turbo will already be seeing 20psi and hauling ass down the road.

For a steet car, i know what i'd be wanting, a faster car and that is what a smaller turbo appropriate to the aim will provide.

[hypergear]

Well once again I was asked to quote some thing to sit comfortably at 250AWKWs. Not 230rwkws. and from experience 2530 is not going to make 230AWKWs comfortably on a stock RB20det GTS4.

like I said I have managed 248rwkws on a 3076 52T .63 rear at 21psi with RB20det. I'm confident 3076 56T can do 250AWKWs+

So i will be recommending this profile. 2530 profile we can build that no problem, Its very responsive but not going to archive the 250AWKWs goal you originally asked for.

[R31Nismoid]

As i've said 230rwkw is the same as 230awkw. It's been proven by enough people, with enough experience, for me to accept that it is true.

These are guys with much more powerful setups.

If they notice no difference, then how a setup 200kw less is going to notice some mystical drop i do not know.

The only time i've seen extra power loss occur is with cars that have modified transfer cases that are purposely built to lockup far more than the factory one to give more drive to the front.

But again, they are far from common place.

Even Roy/Troy agree's with me. Going the extra 20-30kw just makes it a laggy streeter.

We'll have to wait for the OP to come back and post up what his thoughts are on the matter.

[OMGGTR]

Ok guys,

Reading on and on different opinions, Ive decided that nismoid makes a lot of sense, now I'm not gonna say err i want the bigger turbo because its rated at more hp knowing i know crap all about turbos like a dumb ass pardon my french lol, but after reading i can say yeah i do want a more responsive setup, 230awkw sounds sweet as to be honest and i don't think that laggy craps gonna help me for street use.

Now I don't wanna keep posting different topics as I think 230 awkw sounds ideal, if I'm going to be looking deep into this setup I wana know the best bits and pieces to throw into her and being police friendly if you know what I mean..

Most likely going to purchase off hypergear so nismoid if you dont mind can you gimi the name of the turbo with specs eg rear housing n stuff so i can speak to them about it? im going to be after the responsive 230awkw one and if your bored and think you can give me a hand with my build any tips with parts n good buys would be greatly appreciated.

Cheers guys for all your info, love the debates gets me going LOL

George.

[geraus]

highflow bro , im using hypergear highflow its pretty good, i get full boost 17.5psi @ 3800 . not bad and im doing 233kws with supporting mods etc injectors,pfc and so on.

[hypergear]

The profile in 2530 is a GT2860RS with 60mm 65 Trim T3 D-1 comp wheel in .60 Comp housing and T3 .64 rear housing customized with R33's dump pipe pattern. This can be built in both sleeve or Ball bearing.

We can also high flow this into your stock comp and turbine housing.