Rb25det

[Bainator]

Its an original motor from R33 gts-t

Specs:

-blitz air filter

-hybrid FMIC

-3"exhaust.

-dumpvalve

-6-puck sinter,bear 420hp and 500NM

I want to take out between 350-400 hp. How shall i do that ? How many bars can i push the turbo boost with, and be safe not to blow anything ? And what about gasoline flow ?

The motor have run 85.000 km and never been tuned before.

[R34GTFOUR]

Have a search on the forums, that hp has been acheived heaps of time. Especially look at the dyno result thread for the rb25's, that way you can see the people that have achieved that hp and see what mods it took them to achieve it.

Just to get you started:

Fuel:

-Bigger injectors (something like the nismo 555cc would be good)

-Bigger fuel pump (bosch is good value)

Management:

-ECU (its hard to go past a powerfc)

-boost control (profec)

Turbo:

-Garrett GT3071R or GT3076R depending how far you wanna go

-all new turbo fittings including new dump

The stock bottom end will be fine as long as the motor is in good nick and you get a nice tune done

[09ONE_32]

As above.

If the car is going to be used for track use then just be aware that at those power levels an internally stock RB25DET WILL be a timebomb.

If driven as a street car though, with a good tune it will stay togeather for years.

[Bainator]

Its an streetcar, and i shall not change the turbo. Will use the original turbo.

Have found:

Boost controller: http://www.2kracing.com/Product/2376.html

Injectors: http://phase2motorsports.stores.yahoo.net/pe55rbinkit.html

Is those injectors shit ? Shall i use nismo or hks ?

No i just need a fuelpump, any advices for where i can find good pumps for nice prices ?

[charlie25T]

Nismo injectors

Greddy Profec b

On a new clutch ....the one you have wont hold

Bigger turbo

wide tyres

As for petrol...... Depends on the Tuner

An yeah

[Lithium]

Its an streetcar, and i shall not change the turbo. Will use the original turbo.

If you will be using the original turbo, you won't be making 350-400hp You will blow your turbo up before needing bigger injectors. Don't push the stock turbo over 12psi tuned, in my opinion.

Edited June 12, 2008 by Lithium

[charlie25T]

If you will be using the original turbo, you won't be making 350-400hp You will blow your turbo up before needing bigger injectors. Don't push the stock turbo over 12psi tuned, in my opinion.

I pushed my turbo to 14psi...................

And the exhaust wheel came out the back

btw the standard turbo is only ment to last till 60k

[Kaido_RR]

Its an original motor from R33 gts-t

Specs:

-blitz air filter

-hybrid FMIC

-3"exhaust.

-dumpvalve

-6-puck sinter,bear 420hp and 500NM

I want to take out between 350-400 hp. How shall i do that ? How many bars can i push the turbo boost with, and be safe not to blow anything ? And what about gasoline flow ?

The motor have run 85.000 km and never been tuned before.

easy

Apexi Pfc

Nismo 740cc injectors

Nismo Fuel Pump Or Tomei (both are direct bolt in and will support your power lvl)

Z32 AFm

HKS GT-RS or similar

EBC (i use blitz sbc-id3 but anything good will do)

with the GT-RS you should only need to push 16psi to make 350rwhp

Tune

[Kaido_RR]

As above.

If the car is going to be used for track use then just be aware that at those power levels an internally stock RB25DET WILL be a timebomb.

If driven as a street car though, with a good tune it will stay togeather for years.

who told you this?

I have had 350rwhp in my rb25det with over 150,000km for more than 2years now, have done fair bit of track work and the engine is still going strong

I pushed my turbo to 14psi...................

And the exhaust wheel came out the back

btw the standard turbo is only ment to last till 60k

WTF? the std turbo will last longer than 60k if its treat right (e.g not over boosted pass 12psi)

[Bainator]

btw the standard turbo is only ment to last till 60k

The car im looking at have run 85k, but the turbo is just as tight as a new out of the box turbo when i checked the fans inside.

How many psi do the rd25det pushes when its untouched ?

[Adriano]

7 psi. Mate, you really are kidding yourself if you want to get any real performance without changing the turbo.

[skylinekid]

7 psi. Mate, you really are kidding yourself if you want to get any real performance without changing the turbo.

if u actually look hes from norway so theres ur issue lol....

i had my stock turbo at 14psi which is how it came from jappy land with a mines tuned ecu and a front mount.... it was quite a freak for a stock car.......

but u will need a bigger turbo buddy....

[09ONE_32]

' date='13 Jun 2008, 04:06 PM' post='3941325']

who told you this?

The two blown RB25's I have in the garage

But they did take a really solid beating and were putting out 370RWHP @ 14psi so I am not complaining in anyway, they served their purpose and I am now building a forged RB25/30

To be fair the first RB25's condition was basically unknown but it held up for just over a year, and the second one copped a nasty hit to the sump from a ripple strip and the drive back to the pits may have slightly starved it of oil as pickup in the sump was a bit kinked and shit.

[Bainator]

hehe, ok. I`ll give in, I need a bigger turbo.

Got damn, this will be expensive, have to wait for another paycheck or two!

Do i have to change anything internal to get 350, and still be quite safe ?

[charlie25T]

The car im looking at have run 85k, but the turbo is just as tight as a new out of the box turbo when i checked the fans inside.

How many psi do the rd25det pushes when its untouched ?

The car your looking the turbo is untouched

the Ceramic Exhaust wheel comes off................what did you do take the dump pipe off or sumthing

Look at my signature............that is what i need to get 270rwkw @17psi.....

and i limited it at 271rwkw cause i still have standard manifold