Whats Needed Fitting Hks Gt25/30

[xxx_25L]

hey just looking at upgrating my turbo on my r33 form stock i was thinking of a gt25/30 and was wondering what needs to be done to fit this for example like water lines , oil lines etc. what needs to be changed from stock. thanks

Edited August 8, 2006 by xxx_25L

[GtstCoupe]

If you get something like the hks kit youwould get the whole lot to convert right down to bolts and nuts and hoseclaps, what wereyou lokkingat the kit or just the turbo? al tho the turbo should be a direct replacement but i carn remember if they use braided oil and waterlines or keepstock ones.

But a 2530 is not reallyany bigger than stock a 2540 would be a nice

alternative ,what sort of power are you chassing.

Cheers:)

[MKDR33]

ive updated to a 2530 on my 33.. i got a complete kit from HKS, along with the turbo i got water/oil flex lines, washers, bolts, nuts, hoses, clamps etc. the turbo is bolt on and quiet easy to install.. the only problem i had was a water hose behind the engine which i couldnt get to, so i had to take off my left tapper cover to reach it..

even though the 2530 isnt much bigger then the stock turbo, ive noticed a quicker on boost response, and able to boost it over 16psi nicely.. with a fuel pump, ecu, injectors and the rest of the supporting intake mods, you could push them to 260rwkw+.

Edited August 8, 2006 by MKDR33

[Robo's]

  MKDR33 said:

ive updated to a 2530 on my 33.. i got a complete kit from HKS, along with the turbo i got water/oil flex lines, washers, bolts, nuts, hoses, clamps etc. the turbo is bolt on and quiet easy to install.. the only problem i had was a water hose behind the engine which i couldnt get to, so i had to take off my left tapper cover to reach it..

even though the 2530 isnt much bigger then the stock turbo, ive noticed a quicker on boost response, and able to boost it over 16psi nicely.. with a fuel pump, ecu, injectors and the rest of the supporting intake mods, you could push them to 260rwkw+.

260rwkw i doubt it, however you will notice alot more midrange power

[MKDR33]

  Robo said:

260rwkw i doubt it, however you will notice alot more midrange power

well im on 232rwkw atm, thats with a stocker fuel pump and injectors and SAFC II.. the reason i couldnt push it anymore was cause of my fuel pump maxing out.. im hoping for another 20-30rwkw with a fuel pump, injectors and PFC..

[Craved]

2535 with tomei poncams ran out of puff at 250rwkw ... so i doubt the 2530 will make it that high

[AdamsR33]

Go a HKS GT2835 pro s, upto 300 with supporting mods.

[RedDrifter]

The HKS GTR-S is suppossed to be a very good setup.

Interloper has had alot of success with a new one on his R32 RB20 GTS-4. Suppossed to be good for over 250rwkws with supporting mods etc.

[Robo's]

  MKDR33 said:

well im on 232rwkw atm, thats with a stocker fuel pump and injectors and SAFC II.. the reason i couldnt push it anymore was cause of my fuel pump maxing out.. im hoping for another 20-30rwkw with a fuel pump, injectors and PFC..

Im not going to get into any dyno fights but i think your dyno is reading high. I reached my limit around the 200rwkw with the fuel pump. SAFC 2 is only a bandaid fix, you need a PFC for a nice smooth graph line, i tried the SAFC, was nice until i changed turbos and bigger boost. You will also need a Z32 AFM and Fuel Regulator. I was reaching nearly max with the 2530. Anyway , should be good for a mid 12 1/4.

[MKDR33]

  Robo said:

Im not going to get into any dyno fights but i think your dyno is reading high. I reached my limit around the 200rwkw with the fuel pump. SAFC 2 is only a bandaid fix, you need a PFC for a nice smooth graph line, i tried the SAFC, was nice until i changed turbos and bigger boost. You will also need a Z32 AFM and Fuel Regulator. I was reaching nearly max with the 2530. Anyway , should be good for a mid 12 1/4.

lol.. well im not gonna get into a dyno war neither dude, but i never said i got that figure just with SAFC II, as i have other supporting mods.. and Autotech in fyshwick, ACT is a preferred dyno shop, i doubt there dynos would be off as it gets quiet a lot of satisfied customers..

also this business with maxing out the fuel pump at 200rwkw, this may happen with the stock ECU and no tune of the AFRs, but mine is reducing 11% fuel @ 6000rpm, keeping the fuel pump from maxing out..

the stock AFM is a problem ive noticed, as i cant boost it over 16psi..

[MYS013]

I dare say you will struggle to make anymore then you have, but if you do ill be impressed! I had a 2530Kai which only made about 212rwkw @ 1.2bar. I was running Z32 AFM, Nismo fuel pump, splitfire coil packs, Nismo 555cc injectors, pfc etc etc. I even dropped the exhaust which only made a few kw more.

[d0p3y]

I've driven James' RB25 Cefiro which has the 2835 Pro-S on it - all I can say is it tears balls. It's not very laggy, but the mid range and top end is massive. MKDR33 - Either your guy's dyno figures are bullshit, or it's your hectic chrome wheels adding that extra 30kw, because I doubt your car is putting out that much power in reality, especially with a stock fuel pump.

[Interloper]

  nath95 said:

Go a HKS GT2835 pro s, upto 300 with supporting mods.

definitely the turbo of choice for a RB25

  Quote

RedDrifter Posted Today, 06:23 AM

The HKS GTR-S is suppossed to be a very good setup.

Interloper has had alot of success with a new one on his R32 RB20 GTS-4. Suppossed to be good for over 250rwkws with supporting mods etc.

hey i get a mention

but yeah, for the RB20 the GTRS is the best choice, i'm certainly happy with mine

[xxx_25L]

i was looking to make around 260rwkw i wan a turbo with good midrange thats y i was looking at a turbo that size so what would be the best turbo kit to go for that would give the best midrange i was going to just by the turbo i thought it would bolt straight up, so its better to just buy the kit?

[d0p3y]

2835 Pro S is what you want. Awesome turbo, best all round for the RB25 imo, and I've seen both side by side and the difference on the same car. BIIIIIIG difference in power and not much lag either.

Edited August 9, 2006 by d0p3y

[MYS013]

Definitely agree... I swapped the 2530Kai for the 2835 Pro-S, it was the best thing I ever did to the car.

[MKDR33]

  MYS013 said:

I dare say you will struggle to make anymore then you have, but if you do ill be impressed! I had a 2530Kai which only made about 212rwkw @ 1.2bar. I was running Z32 AFM, Nismo fuel pump, splitfire coil packs, Nismo 555cc injectors, pfc etc etc. I even dropped the exhaust which only made a few kw more.

not sure dude, maybe i will get it dynoed at a different place or maybe its cuz im in canberra and we are 600m above sea level and the BP levels are different to other places? who knows.. my whole exhaust system is changed aswell, from the head (exhaust manifold) to the cat back..

  d0p3y said:

MKDR33 - Either your guy's dyno figures are bullshit, or it's your hectic chrome wheels adding that extra 30kw, because I doubt your car is putting out that much power in reality, especially with a stock fuel pump.

i got no reason to post bullshit on here.. its a surprising result for me too.. in all honesty, i havnt checked to see if the fuel pump is stock, ive had the car for over a year now and dont know if it has an aftermaket fuel pump or not, never have checked, as for the AFM, i know its stock.. here are my dyno results with stock turbo and 2530kai..

and as for the chrome wheel joke, f*k i killed myself laughing..

p.s. both dynos are done with stock 17" rims..

Edited August 10, 2006 by MKDR33

[MYS013]

  MKDR33 said:

not sure dude, maybe i will get it dynoed at a different place, to see if i get different results.. my whole exhaust system is changed aswell, from the head (exhaust manifold) to the cat back..

Might be a good idea to get it dynoed at a different place but if your happy it shouldnt make a difference. When I had my 2530Kai I used stock manifold but then again I had everything else and my exhaust had absolutely no restrictions.

[Darkon]

autotech has a really reliable dyno it actually reads lower than alot around here in canberra it seems to be pretty accurate if you can call a dyno that lol and peter dowling is the shiz nit that where i get all my work done

Edited August 10, 2006 by Slither

[MKDR33]

  Quote

autotech has a really reliable dyno it actually reads lower than alot around here in canberra it seems to be pretty accurate if you can call a dyno that lol and peter dowling is the shiz nit that where i get all my work done

agreed slither.. ive been refered to Pete, and i get all my dyno tuning done with him.. quality service for your money.. but some ppl on here (d0p3y) are doubting it, which is quite sad..

Edited August 10, 2006 by MKDR33