hks 2530 turbos for r34 gtr??

[markr34gtr]

just looking at buying hks 2530 kit for my r34 gtr.

how many rwks would i get up to .??

at present i have good exhaust, pod filters and mines ecu...

ran about 220rwks now....

thanks.

[Clint32]

you should get over 300 easily with low boost levels and the right fuel system/ecu, and well over with more boost. These are probably the best turbos for std engine/gearbox gtr for the street.

[Guest RedLineGTR]

the mines r34 uses two 2530...

each turbo is rated at a max of about 250rwkw single turbo tuned really well if i'm not mistaken.

[Maxx]

go for the 2 x hks GT-Rs as u can afford a r34 vspec, similar spoon up time as standard(gt2530) but more top end, will make 700hp by low mount setup

[markr34gtr]

i have heard a few ba reports on gt rs turbos.

they are suited to 2.8ltr engine.

a guy in the uk had 2 sets fitted and had problembs low to mid range on an rb26dett.... good to end though.

so i think safest is hks 2530 as they are well known and driveable on the street.

[Sydneykid]

Hi markr34gtr, we have had GTR's with all sorts of turbo's on then. By far the best allround (road, drag & circuit) was the HKS2530's, closely followed by the N1's, then daylight. With 406 fwkw, those 2530's were heaven on a stick, we upgraded to 2540's and the result was so dissappointing, hardly any more max power, lower average power from 4,500 to 8,500 rpm and way more lag.

If I had a 2.6 litre GTR then 2530's would be on it, simple as that.

[markr34gtr]

thanks sydneykid for your advise...

looks like 2530s are the go...

just hope the clutch will not slip. its a heavy duty organic exedy single plate with lightened flywheel..

[Sydneykid]

Clutch life = mostly driver technique, treat it with respect and it will be fine.

[markr34gtr]

what boost will the r34 gtr intercooler handle and still be efficient... been looking at new hks r type cooler is one of these worth much more power

[Mick Trainer]

Went in a 33 GTR just a few weeks ago with 2530 on it and 350rwkw with great driveability etc. Spooled up early and pull right through to 8500.

For me if I was putting 2530 on I would also put motec on it as this will improve drivability, smoothness etc. Also I would mod the transfer case to make the front hook up faster and thus reduce oversteer. Just what I would do.

Mick.

[Sydneykid]

Hi Mark, we use the a 300 rwkw maximum target for a standard R33/34 GTR intercooler. Boost is irrelevant, it the airflow that makes the power.

For a nice drive we find, being AFM based, an Apexi Power FC to be much better than any of the MAP based ECU's (that includes Motec).

R34's don't have the same ATEESA programming as R32's so don't have the same strong oversteer tendancy. If you want otadjust the bias then HKS make an electronic controller for the purpose. But I would not worry about it on R34, its a must on a high power R32 though.

Hope that helps some more

[EVL R33]

Mark, there are a couple of us over in Perth running 2530's on GTR's, I've got an R33 and a mate has an R32. He's running 2530's with HKS dumps on stock engine, sticj injectors, stock FMIC, with PFC, Bosch 044 and 1.2 bar and is getting 403rwhp. I'm running 2530's and dumps, HKS FMIC, 700cc injector, cam gears, PFC Pro but am awaiting z32 afm's before tuning to 1.3bar.

I changed my FMIC at 280awhp and without changing anything else power rose to 320awhp so I disagree with the 'stock cooler is good for 450hp theory..

Another factor to consider is about 500 - 550 engine hp the internals are going to be under a lot of pain!!!!

But defo go the 2530's, wicked for street....

Cheers

Brett

[Guest RedLineGTR]

sounds like 2530's it is..

[markr34gtr]

i agree , sold on 2530s. might sell my r34 intercoller and get hks type r. 600 by 300 by 103...

i have a mines ecu which is set up for hks 2510 and 600cc.

so it should work okay with my 700cc inj and nismo fuel reg.

i know the way to go is apexi pfc but turbos arent cheap.

we can just tune it with the fuel reg for now..

[Sydneykid]

Hi EVLR33, I am very interested in your experiences with changing the intercooler and getting 40 awhp increase at 280 awhp. Did you change anything else? What happened to the boost? You went from a standard R33 GTR intercooler to ? You didn't change the pipework? Same dyno and operator? Same temperature and humidity?

The reason why I am so interested is that I have had a R33 GTR intercooler on the flow bench and it showed no real restriction until 60 lbs of air per minute, which is enough for around 600 bhp. Plus the GMS R32 GTR 's with N1 intercoolers (same as R33) made 620 bhp before CAMS slapped the limiters on them. So there is a far bit of evidence around to support the 300 awkw limit.

Any feedback would be greatly appreciated.

[sil21jun]

GTRS!

[markr34gtr]

thanks sydneykid i think i will leave the r34 cooler on for a while as my target is 500 to 600hp. so the 1800bucks can by a apexi pfc or something more important to balance the package.

would like 300rwks and 11 sec 1/4 time.

ran a 12.9 at 108mph last month at 1.1bar with the way it is now.

with a crap 2.0 60ft time. have done 1.8s before .

[jlnewton]

Look forward to seeing it action at Willowbank again when you put the new turbos on, won't have to worry about those pesky pulsar gtir s!

[EVL R33]

Mark,

I have the Type R HKS cooler, it's awesome... Also speak to Mark Sharp from Bansai Motorsport he's a legend and he's in Qld. I got my turbos off him second hand for a good price and they were virtually brand new.. Also you can get a PFC with Hand controller for around $1300 from places like Nengun and Greenline. I would suggest you also get the HKS Actuators when you get the turbos. A mate put them on his 2530's and they hold 1.1 bar perfect. I'm running stock actuators and my boost drops off and isn't as consistant...

SydneyKid, I was shocked at the result as well. It was done on the same Dyno about 2 weeks apart (temps were not much different). Boost went up slightly but we didn't change it. Nothing else went on the car except the cooler, stock pipes and everything.... Went from a stock R33 cooler to a HKS Type R...

I guess there could have been a problem with my stock cooler but it looked in good nick... A fair bit of oil and crap came out of it when I degreased it that could have affected it I suppose..

Cheers

Brett

[Roy]

Am i right in saying that for the 2530s to really shine they are best installed along with the HKS manifolds and dump pipes.

With 406 fwkw, those 2530's were heaven on a stick

Sydneykid, thats a fair whack of power from 2530s, were there other mods?