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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.

GTR733HPon23psi93oct001.jpg

Edited by Weapon X
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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 by Weapon X

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

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)

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...

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 :wacko:

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 :D

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 :wacko:

Me either - cant remember exactly what it is.

Piggaz is good with gearing, enlighten sir paul :D

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.

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

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