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Rb25 Mild Turbo Upgrade

RBceffy25

By RBceffy25,
in Engines & Forced Induction

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femno Grand Master

femno

Posted
Posted
why would u bother slapping such a small turbo on a 25/30 build.

at least go gt30. ~300kw and full boost by 3000 which is amazing response.

Haha he actually means a 2530 turbocharger, not 3 litre with 25 head lol.

I wouldnt pissfart around with a 2860 with adaptors then maybe different lines (im not sure about the lines) Im pretty sure the dump pattern is different too. The adaptors are around $200 anyway, and would look shit. Theres 1100 already, plus custom dump, blah blah....

GO highflow. Looks stock, fits stock, least stuffing around, will make the power your are chasing. Theyre around $1300-1400 mark?

RBceffy25 Rising Star

RBceffy25

Posted
  • Author
Posted
Haha he actually means a 2530 turbocharger, not 3 litre with 25 head lol.

I wouldnt pissfart around with a 2860 with adaptors then maybe different lines (im not sure about the lines) Im pretty sure the dump pattern is different too. The adaptors are around $200 anyway, and would look shit. Theres 1100 already, plus custom dump, blah blah....

GO highflow. Looks stock, fits stock, least stuffing around, will make the power your are chasing. Theyre around $1300-1400 mark?

Thanks for all the opinions!

I have been doing some homework since starting this thread and i now see how dumb it is to stuff around with T2 turbo etc etc etc.

i have since purchased a VG30DET single turbo (4V54) with the OP6 turbine housing which i intend to get highflowed to 450hp through Hypergear with the ATR28G3 CHRA as its the most bang for buck optiong i've come accross.

SS8_Gohan Grand Master

SS8_Gohan

Posted
Posted

if you only want 220-230rwkw... i had a hypergear, that's been changed for another hypergear. G2 profile, 71 compressor wheel. It's was a special one-off that Stao made, it was mid 220'srwkw (with some other car issues) with stock turbo response. I reckon those specs in an OP6 rear will be exactly what you're after.

I've just switched to a G3, 76 compressor wheel with the OP6 rear housing, and i'm not expecting stock response at all, but hoping for 260'ish.

The first hypergear i had sounds like what you're after, but i think the G3/76 might be a bit big for what you want.

RBceffy25 Rising Star

RBceffy25

Posted
  • Author
Posted
if you only want 220-230rwkw... i had a hypergear, that's been changed for another hypergear. G2 profile, 71 compressor wheel. It's was a special one-off that Stao made, it was mid 220'srwkw (with some other car issues) with stock turbo response. I reckon those specs in an OP6 rear will be exactly what you're after.

I've just switched to a G3, 76 compressor wheel with the OP6 rear housing, and i'm not expecting stock response at all, but hoping for 260'ish.

The first hypergear i had sounds like what you're after, but i think the G3/76 might be a bit big for what you want.

Yea i understand what your saying but i want the headroom for future mods such as injectors, AFM, ECU etc.

SS8_Gohan Grand Master

SS8_Gohan

Posted
Posted

how you planning on tuning it at the moment?

i see where you're coming from, but i don't see the need to go so big when you only want 200-230rwkw. Why not get that figure in the most responsive way?

Roy Grand Master

Roy

Posted
Posted

The coolest and quickest street car i have even been in was an R33 with Greddy inlet, baby 256 cams and a HKS 2530. The thing made boost and took off anywhere when you simply looked at the accelerator pedal. It was mighty torquey and punchy. It ran 18psi and made 230rwkws, though it drop back to 15psi up high in the rev range. There is no way i would say the turbo is too small. It hammered along very nicely

RBceffy25 Rising Star

RBceffy25

Posted
  • Author
Posted
how you planning on tuning it at the moment?

i see where you're coming from, but i don't see the need to go so big when you only want 200-230rwkw. Why not get that figure in the most responsive way?

haha yea i forgot that i said i was only chasing that power figure.

But now i plan to have it tuned with the factory turbo after i get my new interdooler and boost controller which are on their way. From what i've seen i should make 180ish rwkw on a sensible tune.

Then I'm gonna save the cash to do the highflow, ECU, AFM, injectors, splitfire coilpacks all in one hit and aim for 240-250 rwkw

stenve Proficient

stenve

Posted
Posted

What exactly do you mean by baby cams? do you know what they were exactly?

Pretty much exactly how i want my street R33 to be like instant, torquey response

The coolest and quickest street car i have even been in was an R33 with Greddy inlet, baby 256 cams and a HKS 2530. The thing made boost and took off anywhere when you simply looked at the accelerator pedal. It was mighty torquey and punchy. It ran 18psi and made 230rwkws, though it drop back to 15psi up high in the rev range. There is no way i would say the turbo is too small. It hammered along very nicely
PWND Grand Master

PWND

Posted
Posted
haha yea i forgot that i said i was only chasing that power figure.

But now i plan to have it tuned with the factory turbo after i get my new interdooler and boost controller which are on their way. From what i've seen i should make 180ish rwkw on a sensible tune.

Then I'm gonna save the cash to do the highflow, ECU, AFM, injectors, splitfire coilpacks all in one hit and aim for 240-250 rwkw

what are you getting tuned if you are running a factory ecu?

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