733 R.w.h.p. Rb 28 With 93 Oct And 23.5 Psi

[Weapon X]

We found the end of power at 23.5 psi. These are the last few pulls adding timing.

Precision 6766CEA ball bearing turbo. We are also working on a prototype exhaust housing " variable vane" to bring down the power band.

Edited April 8, 2012 by Weapon X

[Weapon X]

Here's a couple pics of my setup.

Edited April 9, 2012 by Weapon X

[bigmikespec]

Great results... more details on engine? Head work, etc. <BR><BR>What manifold is that?

Edited April 9, 2012 by bigmikespec

[Weapon X]

Ported head, 270 cams, Full Race with my waste gate setup on it I like heat away from the intake side, factory intake 1000cc Injector Dynamics , all the normal and a few tricks. I'm going to put another intake on and see what happens. And try some 110 cct.

Here's a vid for fun of a 2nd gear pull. Dyno tune was done in 4th funny how a tune changes in second.

= Edited April 9, 2012 by Weapon X

[Piggaz]

Any chance of the graph in RPM?

God those manifolds are a work of art!

[NYTSKY]

Not a bad output for the boost and fuel.

Looks laggy though 23psi at 5750rpm and only revving to 8000rpm?

What is is that attached to the rear housing of the turbo?

[SiR_RB]

i was gonna ask the same question, whats that box looking objecton the rear housing/dump pipe?

[zebra]

I'd assume it is the variable vane thing he mentioned, there is an actuator rod hanging off it

[Birds]

Think that's his custom wastegate.

Or a reverse air flow meter

[DVS JEZ]

Here's a vid for fun of a 2nd gear pull. Dyno tune was done in 4th funny how a tune changes in second.

=

it would be hitting differet load points in 2nd on the dyno unless running a really slow ramp rate

[Owgasm]

Manifold is beautiful.

Is that titanium?

[R31Nismoid]

Not a bad output for the boost and fuel.

Looks laggy though 23psi at 5750rpm and only revving to 8000rpm?

What is is that attached to the rear housing of the turbo?

Where you looking/working out boost?

Just going off 90mph where it looks like everything starts to happen... 90mph = 145kph = 5180rpm (300rwkw)

[NYTSKY]

Just assumed as he said his target boost is 23psi.

If you are sure that 145kph is 5180rpm then this graph is almost identical to my graph. Same response, same power.

[MBS206]

Where you looking/working out boost?

Just going off 90mph where it looks like everything starts to happen... 90mph = 145kph = 5180rpm (300rwkw)

I can't exactly remember what speed 4th gear pulls, but that RPM doesn't seem right to me. That would make 4th gear top at 195KM/H at 7000RPM...

[NYTSKY]

Kinda what I was thinking, i was just going off my graph as it has both rpm and kph.

[R31Nismoid]

If you are sure that 145kph is 5180rpm then this graph is almost identical to my graph. Same response, same power.

Well not 100% sure, just using Paulr33's old RPM calculation.

Could well be wrong!

By those same number 142mph / 228kph / 8150rpm

Can't remember what 8000rpm is in 4th on my car off the top of my head

I can't exactly remember what speed 4th gear pulls, but that RPM doesn't seem right to me. That would make 4th gear top at 195KM/H at 7000RPM...

Me either - cant remember exactly what it is.

Piggaz is good with gearing, enlighten sir paul

[Birds]

Go for a drive boys

[Piggaz]

Well not 100% sure, just using Paulr33's old RPM calculation.

Could well be wrong!

By those same number 142mph / 228kph / 8150rpm

Can't remember what 8000rpm is in 4th on my car off the top of my head

Me either - cant remember exactly what it is.

Piggaz is good with gearing, enlighten sir paul

8000 RPM on our car is 235 IIRC.

Oh. I just had a search around and found a word document I have saved over the years.

145 kp/h isssss... 4850 RPM according to this.

[NYTSKY]

Wow! Damn twin scroll!

[Piggaz]

3000 RPM = 85 HP

3500 RPM = 120 HP

4000 RPM = 160 HP

4500 RPM = 240 HP

5000 RPM = 415 ish HP

5500 RPM = 470 ish HP

6000 RPM = 545 HP

6500 RPM = 610 HP

7000 RPM = 660 HP

7500 RPM = 700 HP

7900 RPM or so = 733 HP

* Going off the brown line