Cubes

Personally its the way I'd go if I was after that power level. Cams + GT3071r 56.8mm turbine wheel and .7 RB IW housing. Simon was running the same cams as myself (805c tight regrind ~265duration 8.9mm lift). As I mentioned earlier he was saying before the cams it was laggy and not all that impressed with the setup. I went for a spin in it after cams and was quite impressed. I've got a coup ale of dash vids of mine before and after the cams on the same boost level ~1bar. First/second ramps up so much quicker after the cams. Just for that affect lone I'd look at the cams.

Cable FTW apart from its low up load speeds which is bearable now on their faster plans. If only they had cable running past the front of my place.

Martin, The DD dyno appears to read pretty much the same as Graham Wests Mainline. +-1rwkw. IMO its always been fairly well known as one of the lower reading DD Dyno's. Shaun was running Shoot6F.

There was a bloke at the dyno day yesterday (boostworx dyno). He is running a GT30 core 56.8mm turbine wheel with a .7 avo IW housing and machined rb25 comp cover. He can probably state the specs a little better as he is on these forums but from my understanding he pretty much max'd out around 17-18psi and 244rwkw on PULP. Dropped E85 in a street tune with a wide band and reeled off just over 300rwkw and a little over 20psi. Damn impressive considering the small rb25 comp cover IMO. As a guide the boostworx DD dyno reads on par with mainline dyno's the week or so before at another dyno day cars were running pretty much smack on the same power figures +-1-2rwkw. E85 FTW.

Just finished making up the actuator extension screw on bit that attaches to the flapper. Bit of a bastard welding it then i got slag inside the thread few problems as per normal when working on cars. Now to take it for a spin. Driving n/a with the flapper disconnected starts to get to you after a while.

With water/meth injection. Its simply not possible on regular PULP.

Disco.. Mine was imported from the US. Box was sealed from Slide. Took quite a while to get over here. Bill at Adelaide Turbo Services has sourced me a .82 IW housing relatively quickly (a few weeks) for Lithium. Just the housing I remember was up around 800ish from memory. Lithium may remember as I shoved the receipt in the box. I've got a few pics of mine in the My Garage under Modifications. Have some new pics of the larger actuator that is near impossible to lift off its seat. No more boost drop. They can be had its just a matter of having to wait to get it. :S

Good turn out for the imports and old school muscle and a few ford xr6/8's. Pitty no newish holdens rocked up. Interesting to see Shauns dyno was reads pretty much smack on par with the Graham Wests mainline. Most impressive/interesting I found was the dude with his Silver R33 running on E85. Top effort impressed with the street tune.. Smelt like a fish and chip shop that hadn't changed its cooking oil for a month or two as it drove out.

Did you replace the spigot or more importantly make sure the motor had a spigot? Mate of mine did similar.. Assumed there was a spigot. Ended up stuffing the input shaft bearing. :S

The speedo cable is way to long.. I unclipped the speedo cable up front and have it looping down slightly. Hard to explain, get under the car have a look where the speedo cable comes out from the firewall and see the brackets that its attached to. Remove the attachment so it loops more so then it will be the correct length.

lol maybe thats what I'm doing right.. Mines ALWAYS dirty.

So you have the surge slots? The cropped turbine will spool a tad earlier but will also place a greater demand on the wastegate. SimonR32 had no issues with his. After cams his topped out at 295rwkw but mid range sucked so dialed in the cams picked up 20rwkw through the mid and dropped 10rwkw up top. Settled on 285rwkw. He ran the .7 AVO turbine housing BUT it boost creeped to buggery so had to fit a bigger flapper. Prior to the cams it was laggy after it was a complete different monster. Was quite impressive.... For an RB25.

Spoolup, 23psi 380rwhp.. Sounds like the old shiety GT3076 which earned a bad name for the GT30's. The old GT3076 is one of the big reasons why the GT3040 was such a big hit. The version I have is identical in specs to the HKS3037S which is known as the -12. I've got some pics of it in my Garage see if it looks the same as what you bolted on. Prior to cams ~260rwkw on 15.5psi. 17psi saw bugger all more power. It wouldn't hold any more than 17psi either. We assumed the 232 duration exhaust cam wasn't playing nice. Dropped a set of cams in (265/263 8.9mm lift) and it went to 302rwkw on 17psi but it won't hold any more boost up top. Compared to others on the same dyno with a GT35r .82 IW and a GT3040 .6 its making more power on less boost both with the std exhaust manifold. From what I can tell it seems to be making good power compared to others on the same dyno with the same mods. The only real difference is mines had is a little head work, valve deshroud, port/polish, port match match etc. The Z32 is hitting 5volts. When it was down around 260rwkw it was 4.85volts and the GTR injectors were maxed out. ---- Adriano, Whats the part number on the turbo's tag? Hopefully you didn't get one of the older gt3076's or 71's. :S

My spot is free as I haven't been able to weld up the actuator bit. Unsure if you'll be able to pay on the day or not. Can't see why not if there's a free spot.

Over Pump

Mine has a washer under the spring from an RB30E pump. :S Hasn't broke anything within 100,000km's and definitely runs a tad more pressure than the norm. From memory over 4k it was around 90psi where it holds until its 7.3k cut.

.82 I wouldn't have it any other way for ~300rwkw, with the cams in zero position peak power was made at 6000rpm and dropped 9rwkw by 7000rpm. It pulls clean to 7k. Often in second gear and third you can hit the limiter at 7.3k as it just doesn't feel like power is dropping off but only since the cams. Prior it felt like power was nosing off at 6.9k which is where I found i was shifting up at. Myself, Al and Lithium all run the GT3076r .82 with an Internal gate. We all have no issues with boost creep. Al runs 16psi Lithium 17psi Mysoelf 19psi tailing off to 17psi. (I now have a large Garrett actuator to control that gate better s no more boost drop over 5000rpm so I will tune her up on 20psi ish. See where it stops making peak power and leave it at that. When I sourced the .82 IW for Lithium I was told there was two versions of the IW. I forget the part number addition but one had the larger flapper installed from Garrett them selves. Which is what Lithium got. Really.. You'll love the GT30 .82 on the RB30DET. Such a streetable motor. The ONLY time I'd consider the 1.06 is if you were running the 82mm comp wheel on the GT30. Should be able to push up around 350rwkw but with not quite as much lag as the GT35r .82.

Steve, I'd be super careful on 1bar. 1bar 'should' be up around 240rwkwish and the injectors are only 370cc so only good for a little over 200rwkw before they are max'd and afr's start heading north. On a side note here's my fat actuator. No more boost drop for me Its mounted, bracket modded rod shortened etc now just have to cut and weld the screw on section that attaches the wastegate.

Wouldn't bother with a T04Z if your going to stick with 7000rpm.

Its all good buddy. Popped down to MTQ today and checked out the 19psi actuator. The seat pressure felt a tad soft and not much if any more than the 1bar actuator. Testing it she cracked off the seat around 12psi. I checked out the slightly more expensive 14psi Large can and MFG I can't even lift the thing off its seat. The larger can has a spring that is a shit load stiffer as the diaphram is larger so more surface area etc etc. I went with that as it will hold against the flap pushing open much better. Now to try and squeeze it in.

I ran 2 x 12" turbo's they sucked to put it politely. Fine in cooler weather as soon as it 'slightly' warmed up temps began heading north. Either adapt a set of EL thermo fans or don't bother at all.

Can't use the rb20's clutch fan?

I was in until I checked what boost the car was holding (found it was down to mid 16psi) so fiddled with the actuator and broke the arm. Rewelded the arm and then lost the custom made section that screws on to the actuators arm. Not going to make another for the lazy 1bar actuator. Picking up a 19psi actuator from MTQ tomorrow but don't like the chances of welding up another custom rod and then giving it a quick street tune in time. Either way if the car is ready in time or not I'll be there.

Yeah the poncams. 256 8.5mm lift. Obviously you want every little kw out of the setup possible (your ragged tune comment) so bigger lift cams are a way of doing this while improving 'reliability' and reducing the RON requirement of your fuel. You may then feel happier within yourself running E85 and saving hundreds of $$ per tank as its not so 'highly strung'. All though E85 is perfectly fine due to the huge amount of head room (MTBT) it provides.

Regardless. I'm not talking of comparing dyno figures/ET's or breaking records on pulp. Simply pointing out where you may wish to improve if you want to squeeze every little bit out of that turbo. Those cams are the down fall of the setup its as simple as that. GT35r is a push over for E85. There is head room for a little variation due to MTBT (minimum timing best torque). I.e push more ignition in you make less power. The summer/winter variation isn't too much of a hassle and will no doubt be sorted soon as summer approaches. Well at least on the dyno I run on as various track only cars have been setup for use with E85. I'll be sure to share the findings if the variation is an issue.