Any help appreciated

[Watermouse]

As Dose said before, if u want to spend cash do it on more value for money stuff.

But if u have the cash this is cool, but it’s designed to sit on top of the RB25 lower shell

 

Edited May 1, 2024 by Watermouse

[Dose Pipe Sutututu]

12 minutes ago, R32.RB said:

90mm throttle body

big throttle bodies don't magically make more power.

You only need to go bigger if you have more boost pre throttle than post throttle when at WOT.

68 or 74mm DBW is more than sufficient for most people.

[Watermouse]

7 minutes ago, Dose Pipe Sutututu said:

68 or 74mm DBW is more than sufficient for most people.

Would a 74mm be fine for a Neo 25, 98 fueled 300wkw or 68 would be more appropriate?

Edited May 1, 2024 by Watermouse

[R32.RB]

13 minutes ago, Dose Pipe Sutututu said:

big throttle bodies don't magically make more power.

You only need to go bigger if you have more boost pre throttle than post throttle when at WOT.

68 or 74mm DBW is more than sufficient for most people.

Well, tell me how I can make around the 500-600hp mark with a T3 top Mount turbo if my Aeroflow 6262 .84 T4 is too big as I was going to build it for 5-600 and flex fuel and stages like boost Lvl 1 - 15 psi boost lvl 2- 20 psi boost lvl 3 27-30 psi for example 

[Duncan]

I'm running a greddy style plenum with stock throttle body on my rb30 (rb25 series 2 head) stagea, it is making 400kw through that.

There are plenty of ways to spend money on the car, you don't need to change the intake you have for 600hp

[Dose Pipe Sutututu]

18 minutes ago, Watermouse said:

Would a 74mm be fine for a Neo 25, 98 fueled 300wkw or 68 would be more appropriate?

74mm would be good, however you will find you will need to gently ramp in the pedal vs. throttle so it feels smooth and linear (not like those silly carb V8s where you touch the throttle 1mm and the car wants to fry tyres).

This is how mine is dialled in with a 74mm DBW TB, I wanted 68mm but Plazmaman couldn't weld a 68mm flange onto the plenum.

 

11 minutes ago, R32.RB said:

Well, tell me how I can make around the 500-600hp mark with a T3 top Mount turbo if my Aeroflow 6262 .84 T4 is too big as I was going to build it for 5-600 and flex fuel and stages like boost Lvl 1 - 15 psi boost lvl 2- 20 psi boost lvl 3 27-30 psi for example 

You said you want 373kW to 447kW, you don't need a 62mm turbo to do that, that turbo can spin over 500kW+

[R32.RB]

10 hours ago, Dose Pipe Sutututu said:

74mm would be good, however you will find you will need to gently ramp in the pedal vs. throttle so it feels smooth and linear (not like those silly carb V8s where you touch the throttle 1mm and the car wants to fry tyres).

This is how mine is dialled in with a 74mm DBW TB, I wanted 68mm but Plazmaman couldn't weld a 68mm flange onto the plenum.

 

You said you want 373kW to 447kW, you don't need a 62mm turbo to do that, that turbo can spin over 500kW+

Okay I must of got my letters wrong instead of hp  I’d like to make 450-600kw i know it’s quite easy to make it on an RB I already got the turbo for free so it’s brand new the aeroflow 62 .84 T51r mod already done T4 flange can I change it to a t3

 

but please tell me how 

[Dose Pipe Sutututu]

Is there a reason why you want close to 600kW in a R32 GTS-t?

Have you thought about suspension work, subframe changes (from a newer car, offsetting it), diff choice, brakes, gearbox?

There's a high chance you're running a RB20DET gearbox which will not like close to 600kW being sent through it.

Also a 6262 won't get you close to 600kW.

[Watermouse]

@Dose Pipe Sutututu  thank you so much, understand what u mean and appreciate that info

[Dose Pipe Sutututu]

5 minutes ago, Watermouse said:

@Dose Pipe Sutututu  thank you so much, understand what u mean and appreciate that info

I think way too many people get caught up in the whole bigger TB for more power, but that's only if it becomes a restriction.

In a FI environment, the TB size is not as sensitive, where as in a NA environment, you find with the throttle at 100% and if the plenum still registers a vacuum, then your TB is undersized and requires to be upgraded.