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Responsive 300+ Kw

sydking

By sydking,
in Engines & Forced Induction

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sydking Veteran

sydking

Posted
Posted

Looking to build a 300kw/

Not looking for a Track build, just a really responsive Street car.

Now ive got the change to get my hands on a 30/25 or should i build my 25det how it is?

i understand matching turbos will give responsivness and the whole twin vs single debate.

And just reading through the 400kw+ thread has left me scratching my head even more.

And dedicated street cars out there making soem resonsive number who can lend some input??

What ths diff in High mount vs low?

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TiTAN Grand Master

TiTAN

Posted
Posted

check out the RB30 dyno thread for AL's car, GT3076 320rwkw and only a little more lag than the stock turbo on the RB25.

that being said, the RB30 is not as simple as just dropping it in, you have to modify bits and pieces to make it all work. the stock RB25 with again the GT3076 is still a pretty responsive setup (full boost ~3500rpm vs ~2500 in the RB30) and a whole lot easier/simpler to get legal.

WYTSKY Veteran

WYTSKY

Posted
Posted

sydking you have been pming me abit about different things with your car...

If you go the 25/30 route, im not 100% sure, but i think you will have alot of hassles if you want to keep awd with your car (I would)

+1 for 3076r, as you have the same motor I can tell you it is very responsive.

for a street driven car, high mount is asking for trouble (not that an external gate isn't either)

if your goal is a responsive 300kw without too many headaches, stick with what you have got.

Legionnaire Collaborator

Legionnaire

Posted
Posted

Yep, GT3076R with internal gate seems to be the go, in 0.82 a/r housing

Or GTX3071 in the same housing.

Or better yet, you can wait for EFR7670 or 7064 to make it to mass production. Based on their comp maps, they seem to be killer turbo for an RB25, particularly the latter. And comes with a nice big internal wg and with T3 flange too!

SargeRX8 Grand Master

SargeRX8

Posted
Posted

Consider the Hypergear SS1.5PU. DVS JEZ will be tuning it this saturday hopefully and numbers will be up. Ive got the SS2 on my car, was mildly bolt on and not too hard to fit in. Looks pretty stock, dead stock if I had the heat shield and stock airbox on their but you gotta compromise sometimes.

I thought your car was non turbo, are you DE+T ing or is this a different car? Don't just jump into a Garret, and don't just jump into a Hypergear but take it from me, I had owned 3 garret turbos(3071, 3076 and 3582), all of which should have been on my car but there were so many more factors when going Garret. Running a 3071 gives you awesome response with about 280rwkw. the 3076 a touch more lag but opens up 300rwkw. The 3582 can push closer to 340rwkw on the stock motor, but you will be pushing 25+psi here which is quite alot for the stock motor.

I'm running 14psi low boost 19psi high boost. I never use high boost. The car is very quick, nicely responsive(flat til about 3300 - 3500, makes no difference if low or high boost, you will reach your peak boost by this rpm). The Garret 3076 turbo is NOT designed for the Nissan, it is a generic application turbo which happens to be the best turbo Garret make for a stock Rb25. On the other hand the Hypergear turbos(SS series and the ART43 range) are tried, tested and developed with only the RB25 in mind. 98 fuel I'm pushing big horses and close to 700nm torque. Its the torque delivery which is the big difference here, you can create peak power but depending on how and where the flow is in the turbo will determine what the torque will feel like. 700nm of torque, my car is squatting and lifting like Ive never seen before.... and I might have even more potential when I get a larger intake pipe.

GTScotT Grand Master

GTScotT

Posted
Posted

I would seriously try the ATR43 G3 on a RB30/25DET.

I rekon it might out do the 3076. Its actually a slightly bigger turbo but i think the 3L bottom end will make the difference between them pretty much void.

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