What turbo for RB25 drift motor

[Adz]

Hi,

I was wondering if you guys could help me out. I wanted to know what turbo you guys would recomend for a RB25 that will be used for drifting. I am lookin at an external gate set up and want to make between 250 and 300 rwkw eaisly. I want to have strong mid range torque. So far these are my options.

2540 (Im thinging too small)

2835 (do people do this ive only heard of these on SR20s for drift, ie D1)

3037 (will this be too big or will the ball bearings make up for it)

3040 (didnt know they existed till recently, any thoughts)

TD06-20G (I know this is a good turbo for the RB20 but waht about the 25)

TD06-25G (this is the turbo im thinking of atm but I hear it doesnt come on boot till close to 5000rpm is this too lagy)

RX6? (BIG bucks and I know little about these turbos)

Any help would be much apreciated

Thanks

[cameron]

For start's you don't need 300rwkw's to drift, 250rwkw's will be fine, with you car on a weight loss program...

External gate for drift ? - that limmit's you have a smaller & responsive turbo.

For more power on the track with Internal Gate I would go the HKS 2835ProS which is enough for 250 - 300rwkw's. Other wise go for the 2835 external version if you have to have an external gated turbo. Stay away from 3037's & 3040.

I personally would go for the 2530 or 2540 turbo.

Jun

[Al]

For drift you only need a 2530, 2535 or a GTRS. These turbos will give you between 220 and 260 rwkw, more than enough for drift, with a whole bag of torque and response.

Have you done all the other more important mods first?

- Braces

- Suspension

- Control arms

- Diff

These are far more important than a turbo upgrade, as the standard RB25, with aftermarket ecu and boost, will have plenty of power on tap.

[Adz]

I am aiming for the car to be a high end drift car so I belive 300kw is about right due to the fact that the average D1 car is rated at 400ps at the wheels which equals 294kw and thats on 1100kg S13 platforms as aposed to my heavy R32 platform.

So from what you have suggested the 2835 is the way to go. If a 2835 can flow an easy high 200kws with good response I can see no flors in that. Do you know what they are rated to?

[Adz]

Thanks for your input so far guys.

I have been talking to some respectable tuners about this in great detail and they belive the 2530 and 2535 have to much back presure to easly run 250kw without rick of detonation, as for the gt-rs I have heard they are a bit miss matched and are prone to surging. Not trying to disagree with anyone here just telling you what I have heard so far. The 2540 has been recomended but I still love the thought of a external gate.

[Adz]

As for other mods to the car.

I removed all sound deadning.

Full 8 point cage to struts with side intrusion and seam welding goes in next week.

As much bull crap bracing as I could find on Yahoo JP.

UAS break upgrade

adjustabel camber front and rear

adjustable castor

subframe lock kit

extended steering lock kit

cusco 2 way diff

Tein HE coil overs

Rb25 box

Recaro seat

Harness

Custom Exedy clutch

RB25, just need the right turbo kit

[Al]

Great to see a properly set-up car

The only mismatch turbo i know of is the 2540, I personaly would not use this turbo at all. I would still use the GT-RS or the 2835.

What ecu are you running?

[Adz]

Thanks dude.

Im installing a Power FC for now using the R32 loom. Then rebuild the motor in 6-8 months with forged pistons, rods and relive the block and head. At that stage ill go for motec. Its a great insurance policy in my books.

Great to see a properly set-up car

The only mismatch turbo i know of is the 2540, I personaly would not use this turbo at all.  I would still use the GT-RS or the 2835.

What ecu are you running?

[SLY33]

whoever told you the GTRS is a mismatch is dreaming! its the latest GT release set to replace and provide more response and top end power than the old GT series!

[Adz]

After a little more research tonight I think im heading towards a 2835ProS and aim for an easy 280kw with cams, head gasket and injectors.

What are your thoughts

I also like the look of this:

HKS 2835ProS

I also found this little document for your enjoyment.

HKS GT Ball-Bearing Turbochargers - Comparison Chart

[Al]

Sorry unable to read Japanese, what are the two lines on the graph?

Is the red line Kw and green line N*m?

[Adz]

Yes thats right

[OFENSV]

i have a hks gt2835 external gate turbo for sale. come with hks cast manifold and trust 40mm external gate. It would make a good drift turbo

[RB30-POWER]

And i thought the only secret to drifting was shitty tyres

[Adz]

Ok guys just a little update.

I decided to go with the 2835Pros.

It arives next week so stand by for some comprehensive dyno graphs with the following setup.

RB25DET

2835ProS

R32 Power FC

Z32 AFM

TOMIE 260 IN/EX Cams

Sard Fuel Presure Reg

Bosh 040

1.6mm Head Gasket

N1 Oil Pump

N1 Water Pump

Standard Injectors

Any guses on power on 1.1-1.2 bar

[paulr33]

I'd say around 290rwkw but injectors will run out around 250rwkw

[Chris32]

Do a search for grepins setup, RB25 with 2835ProS, has made 300rwkw with cams and head work on his RB25

[R31Nismoid]

Great to see a properly set-up car

You dont reaslise who "adz" is i think

He has the car as he's in the "know" hehehe!

Adam, your going to need a set of injectors thats for sure.

I'd say look @ the Nismo 740's they are a straight fit and get rid of the problems the SARD RB25 ones have at times with the collars.

only a few $$ more expensive anyhow

You looking @ rebuilding the motor at all, an RB25 wont live long @ that power with the high end flogging your going to be giving it around calder/JMS comps etc.

cheers - ash