RB25 to 450whp? question on turbo and other mods..

[bennett691]

well i was reading an article in modified mag and it was say if u ask any one building a 240 their main goal is 400hp or close to that and it said in doin so u put on big turbo which everyone knows.. but it also said when doin so u loose all responsivness to the engine ?? because right now i am looking to build a rb25 to put in a 240 and that is my goal is around 400 450hp but i dont want it to responsive.

[rustbucket]

What?. . .Whats the question? You make my brain hurt, my nose is bleeding now.

[DJButton]

Huh??? You want to know if by bolting any random turbo to an RB25 you will loose responsiveness when trying to get upwards of 400whp.... Give me an actual turbo size and I may be able to help you guesstimate what kind of resonse you'll get... and for future reference, most car mags are useless!

[Carl H]

engrish much?i would like to help but ive no idea what you are trying to say.

[Arrow]

it almost seems like he is trying to ask what he should do / what turbo could he get that would allow him to reach his goal of around 400 to 450 whp without loosing any responsiveness of the engine... but I could be wrong, that's just what I made of his post...

[Eikon]

you guys ever get that email where all the words have the letters scrambled, but the first and last letter are the same.. and somehow, miraculously, your brain can still read it just fine..

I'm going to apply those skills to this question and try to translate.

Then you guys go ahead and answer...

"Is it possible to put a turbo on a RB25 that will give me both high hp (400+) and good responsiveness?"

[bennett691]

yes sry i should have worded it different.. waht i was trying to say is what would i need to do to tha motor and what turbo to use on an rb25 to make about 450whp and still keep the resonsivness of the motor.

[Eikon]

Ok Dwayne.. You're 16 now, and you live in Ohio, so you should have a fairly good education going for you so far.

Can you do us a favor and work on the spelling and punctuation? This way the nice people on the forums will not have to reread your posts a couple times to figure out what you are asking. It's basically just common courtesy.

Let's try this again..

yes sry i should have worded it different.. waht i was trying to say is what would i need to do to tha motor and what turbo to use on an rb25 to make about 450whp and still keep the resonsivness of the motor.

What you meant to say is...

Yes, sorry. I should have worded it differently. My goal is to make 450whp on an RB25 and to keep good responsiveness. What would I need to do the motor? Also, what turbo would you recommend to help me achieve this goal?

Now we're talking!

[bennett691]

yeah thats it.

[Eikon]

Yes, sorry. I should have worded it differently. My goal is to make 450whp on an RB25 and to keep good responsiveness. What would I need to do the motor? Also, what turbo would you recommend to help me achieve this goal?

Oh, good question!

I'd recommend a GT3071R with a v-band discharge. Another great option would be a GT35R. Both should get you to 450whp (with the other necessary mods of course) while maintaining quick spool and response.

Of course, you'll need some other mods to get there safely and not blow anything up.. 650cc injectors3" downpipe and exhaustlarge fmicaftermarket camsz32 or q45 maflarger throttlebodypowerfc or other standalonestronger pistons/rodsarp headstudsstronger headgasketstrong clutch

How do I know this??? I searched for the answers. Your questions are nothing new to the RB forum. The little red box that is flashing on the top right of the screen will lead you to a wealth of RB knowledge that has been accumulated by some pretty incredible people who've been generous enough to share their knowledge and experience with this forum.

Good luck with your build. Keep us updated!!!

[240sxautox]

How do I know this??? I searched for the answers. Your questions are nothing new to the RB forum. The little red box that is flashing on the top right of the screen will lead you to a wealth of RB knowledge that has been accumulated by some pretty incredible people who've been generous enough to share their knowledge and experience with this forum.

To be successful with the search button though, he would need to be able to spell. I think that's a big problem with the search issue on Nico... is there an engrish translator program?

[lucky7]

Of course, you'll need some other mods to get there safely and not blow anything up.. 650cc injectors3" downpipe and exhaustlarge fmicaftermarket camsz32 or q45 maflarger throttlebodypowerfc or other standalonestronger pistons/rodsarp headstudsstronger headgasketstrong clutch

im going for it over the winter. but im skipping the following on your list. i just dont think its necessary.-big cams.-Z32 maf. (im running map sensor)-pistons/rods.-headstuds.-head gasket.

i dont think that stuff is necessary if shooting for under 500hp. im planning on saving some cash, using the log manifold also.

[Cjmartz2k]

Yeah, some of it isn't required, but the cams would deff. help with response. You can make 450-500hp all day long on a stock RB25 with a good tune. I'm making 440 and have been for about 1 year, and I beat the snot out of mine. Moving up to a Holset next, if I can get an answer in the other thread.

[lucky7]

Yeah, some of it isn't required, but the cams would deff. help with response. You can make 450-500hp all day long on a stock RB25 with a good tune. I'm making 440 and have been for about 1 year, and I beat the snot out of mine. Moving up to a Holset next, if I can get an answer in the other thread.

what is your set-up? what turbo are you running? im looking to make the jump this winter to the 450hp range. should be pretty strait forward, but im not sure what turbo to go with. i almost want to be a cheap arse and get an internally gated GT30.

but im sure ill end up with a seperate tial gate. but i know i need injectors, and the turbo itself.

[meet07]

for some reason I like boost lag. What would a 600-650 hp turbo feel like.....a rocket huh??

[Cjmartz2k]

what is your set-up? what turbo are you running? im looking to make the jump this winter to the 450hp range. should be pretty strait forward, but im not sure what turbo to go with. i almost want to be a cheap arse and get an internally gated GT30.

but im sure ill end up with a seperate tial gate. but i know i need injectors, and the turbo itself.

Sorry about the late reply:Stock RB25 motor with a T04e and all the supporting mods. What you are planning doesn't sound all that cheap--my turbine/manifold/wastegate ran me about $600 with the new turbine (it was ment for a diesel generator, but I guess it "fell off the back of the truck" and found it's way to me :-D )

[Carl H]

cams are key if you want real power thru the revband.