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Sensor was ordered from south this morning Steve. should get here monday/tuesday.

As soon as Sean has a spare spot he will throw it back on the rollers. I think he's quite keen to see where this goes as well.

Awesome !

Thats not the plan Dave. Mid 500 hp has always been the goal. What we are trying to achieve here is that figure on as low a boost and revs as is attainable.

Surely you're keen to see how far you can push the envelope though, then turn it back down to the power youre after?!

EG turn it up to max efficiency for results sake then back down to 20psi or whatever for everyday use

From what we heard before we put one on Gervase's 33GTR, the XR6 guys were replacing Z's with them and gaining about 100hp at the wheels and 400-500rpm better response

Gervase took off his 0.84 T04Z and put on the 0.89 GT3788 and gained about 400rpm response and made (I think) about 80hp at the wheels more on the same dyno.

This is the 4th one of these turbos I have fitted now, every single one is as responsive as a 35R or around the same but makes 150 odd HP more at the wheels depending on the application of course (mostly 25/30's or heavily modded 26's)

Interesting, would love to see some actual results. I'm a little lost on how a compressor that should flow about 100hp more makes 100hp less at the wheels?

Interesting, would love to see some actual results. I'm a little lost on how a compressor that should flow about 100hp more makes 100hp less at the wheels?

Thats easy..the T04Z is a nugget.

Was a nugget when it was still the T04R

Thats this blokes opinion anyway.

Interesting, would love to see some actual results. I'm a little lost on how a compressor that should flow about 100hp more makes 100hp less at the wheels?

Theread revival time. back on the dyno yesterday for some preliminary work and promptly spat out 450 hp at 13 lb.Serious time gets serious next week.

I think I'm gonna love the new turbo.

Missed them lb's didn't you Simon, haha.

All round very impressive results anyway, am very happy to see that a size up in turbo can be combated by a move to a twin scroll housing. Time to have another read of the EFR thread.. I need a price in time for tax return.

Surely you're keen to see how far you can push the envelope though, then turn it back down to the power youre after?!

EG turn it up to max efficiency for results sake then back down to 20psi or whatever for everyday use

If you had blown 5 turbos in 3 years and had to rebuild the engine every time, lunching bores and destroying heads, I think I know where I'd stick that envelope if he pushed it.

The aim of this was purely to give Noel a fast car. He continued to push the 35R til it's absolute breaking point. Every time one would blow, another would go on, then blow.

We moved to this turbo because we know what it can do and hopefully it will mean he can actually go out and race the car instead of waiting for me to have time to build him another engine.

Also, unless he can show both myself and Sean (tuner at EFI) that he actually NEEDS more than 565hp at the wheels, then he won't be getting 1hp more. If it was a dyno car or something that only saw driving on weekends, I'd push it til it stopped making power. Should be good for 700hp at the tyres with everything going for it.

Also, unless he can show both myself and Sean (tuner at EFI) that he actually NEEDS more than 565hp at the wheels, then he won't be getting 1hp more. If it was a dyno car or something that only saw driving on weekends, I'd push it til it stopped making power. Should be good for 700hp at the tyres with everything going for it.

Yeah lets do it Dan. (insert evil grin here)

Stock RB26 Bottom end

Surecam Cams

Supertech Valve springs

2 x piburg Fuel pumps

1200 RC injectors

Proboost T04Z with 0.64 rear

444rwkw on about 30 psi. Pump E85 0.73 lambda EGT's 790c

http://www.skylinesaustralia.com/forums/index.php?app=core&module=attach&section=attach&attach_rel_module=post&attach_id=336483

Edited by HYPED6

Nice work Noel, hope she works out!

Thanks Si, Theres an air of confidence about it this time from all partys.

Awesome, good luck - keen to hear results! (and dyno vids :D )

Do you have dyno plots from the old GT3582R for comparisons sake?

Will definitely post the old and the new Lith. I am as keen as any to see how close the power curve v boost can match the 35R.

Stock RB26 Bottom end

Surecam Cams

Supertech Valve springs

2 x piburg Fuel pumps

1200 RC injectors

Proboost T04Z with 0.64 rear

444rwkw on about 30 psi. Pump E85 0.73 lambda EGT's 790c

http://www.skylinesaustralia.com/forums/index.php?app=core&module=attach&section=attach&attach_rel_module=post&attach_id=336483

And you get back on the dyno. i dont want any delays tomorrow. :domokun::nyaanyaa:

Exciting stuff Noel! No doubt you will ring dad as soon as you know.

Im always getting the information second hand..... I thought we were friends :(

Because i have his number in my phone and not yours. pm me bish.

by stock bottom end do you mean stock pistons as well? how on earth do they cope with the cylinder pressures that 444kw creates at peak torque? or has your tuner flattened out peak torque a bit?

He is the/our tuner Rolls. His 26 is a rolling testimony to safe tuning.

I can attest to the stock bottom end, I was there when they screwed it together. We practically had to bulldog him to the ground just to drain his wallet to put new bearings and a decent harmonic balancer on the damn thing.

by stock bottom end do you mean stock pistons as well? how on earth do they cope with the cylinder pressures that 444kw creates at peak torque? or has your tuner flattened out peak torque a bit?

Yes they are the original pistons the car came out of the factory with. The only bottom end change is ARP rod bolts.

I have never seen a piston break from cylinder pressure unless the engine pings.

If you dont let them ping, and dont melt them they are pretty much indistructable.

If you dont let them ping, and dont melt them they are pretty much indistructable.

Yep pinging is the death of most motors, I was under the impression that even not pinging once you got to those kind of torque levels it would damage stock cast pistons as well. Learn something new every day

How do you monitor temps to make sure they aren't getting cooked, do you just do it based on the EGTs at the collector? if so what kind of temps do you aim to keep it under?

Edited by Rolls

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