Garrett Gtx3071R

[dori34]

200kw @ 4000rpm,

349rwkw on 19psi spikes to 21ps

impressive results

[Lithium]

It is an interesting result, falls over quite early for a cammed RB25 with a GT3076R though - wonder if there is a restriction somewhere or something. I would have expected a bit more, but I guess we have fairly few internally gated/stock manifold E85 results to work from.

[Rolls]

whoops wrong thread

Edited March 7, 2012 by Rolls

[ShiftyTys]

I wonder where you've seen that.

The GTX3582 AR63 isn't a good choise. It produce exact the same power as a GTX3076r but, came on 500rpm later! A GTX3582 Ar 0.63 doesn't make sense because the turbine housing is the limited factor! And with a Ar 0,82 it is very much to laggy. I say that with experience, because i've had a gt3582 Ar0.82 on my Gts-t with a external screemer pipe :-) ther's nothing to 5k rpm and than "bangggg!!" funny but not very useful.

Is there nobody who ha experience with a gzx3076r on rb25det?

I have gtx3076 .82 on my rb25...

[rondofj]

Whats the seat of the pants feel like?? And poer on street??

[rondofj]

Power

[Angeltownracing]

I have gtx3076 .82 on my rb25...

Have you a dyno sheet with RPM ?(i don't like Speed instead RPM dyno sheets) How laggy is the turbo, on which rpm spools the turbo,has full boost, peak torque and peak power?

[scotty nm35]

The RPM is calculated though, its usually not accurate from what I have seen, how can you know every car's ratios anyway? If you can't work it out from the graph i'm sure someone will have a guess for you, without seeing the sheet I can say it would probably come on hard around 4k.

My tune today didn't pan out, speed cut and a slipping lock up clutch ruined my chances of a good result with the 71. I will be back on the weekend with the SLD back in place hoping for 350kw.

[AngryRB]

i should have a dyno graph for a GTX3076 next week, im hoping it will prove to be just as good and a bit more than the GT3076,

[Dajae]

The gtx3076r is similar in spool, if not a small margin worse, than the gt. The gtx really only comes to life once you start throwing lots of psi at it. Although.. Im sure a true twin scroll housing+manifold would bring the spool back to baseline.

Any luck with the tune Scott?

[Lithium]

i should have a dyno graph for a GTX3076 next week, im hoping it will prove to be just as good and a bit more than the GT3076,

Did you previously have a GT3076R?

[scotty nm35]

The gtx3076r is similar in spool, if not a small margin worse, than the gt. The gtx really only comes to life once you start throwing lots of psi at it. Although.. Im sure a true twin scroll housing+manifold would bring the spool back to baseline.

Any luck with the tune Scott?

I was seeing over 300kw in 4th at speed cut which I guess was around 5000 revs. Once I wire the SLD and get rid of speed cut again I will be able to see the outcome of my fine tuning. The MAC wastegate solenoid is working a treat now, it held a flat 25psi from what I could see. I will ramp it up on the weekend during the next run.

[AngryRB]

Did you previously have a GT3076R?

No, i had a highflow but im hoping its on full boost by 3500rpm, maybe wishful thinking...we'll see

[Lithium]

Internal gate, or external etc? What kind of other mods? I'd be happy if it were hitting 20psi under 4000rpm.

[AngryRB]

It has external gate, AVCR , 256cams, cam gear, maybe a 50/50 ethanol blend

id be happy with near 200kw at 4000rpm with 18-20psi

Edited May 2, 2012 by SliverS2

[Lithium]

With decent exhaust/intake manifolds? If so, this could make some mighty power Would hope 200kw @ 4000rpm should be doable.

[scotty nm35]

It has external gate, AVCR , 256cams, cam gear, maybe a 50/50 ethanol blend

id be happy with near 200kw at 4000rpm with 18-20psi

Why 50/50? how far away is Warwick from you? (or is there a Caltex up there?) You will see better gains from just running United e90 with none of the cold start issues we see down here...

You should come close, perhaps around 4200 revs? That's my guess.

[wolverine]

4237.4rpm

[AngryRB]

well im doing all this on a tight arse budget and getting impatient, some parts like the HD clutch, walbro fuel pump, and now rear muffler with silencer may fail before it reaches 300kw

So i guess for now ill have to see what happens on the dyno, im thinking even 280 would be great,

50/50 blend is another cheaper option.

Edited May 2, 2012 by SliverS2

[Dajae]

Ah yes, the joy of modifications. My "refresh build" is turning into a 20k build. Interested to see your results too!