Jump to content
SAU Community

Recommended Posts

Hey guys

as some of you may know, my old 3071R (which had been bought used) had recently let go and I was shopping around for another turbo. Thought about getting a 3076R as I wanted to hit my power goal of 275rwkw... but decided to stick with a 3071 to avoid any headaches...

So placed an order for a new 3071R with GCG and it showed up a few days later... I opened it and instantly thought that it did not look exactly like my old turbo... couldnt put my finger on it but I knew it wasnt the same..

so gave it to Yauvuz at unigroup to whack it in and a few hours later I get a call confirming what I had thought... The housings on the new turbo were different to the old 3071R I had fitted... the old turbo had a front housing with a much bigger intake (diameter wise) which suited my custom intake pipe and the new turbo had a different rear housing.... GCG rekon this new rear housing is 'original' Garrett and much more efficient...

So I chucked a sicky from work to get it all sorted... took it back to GCG to get the front housing off the old turbo... got it machined, polished n all cleaned up and it was fitted to the new turbo... then it turned out that the flange on the dump pipe needed to be changed to suit the new rear housing... so bought a flange too and gave it all back to Yauvuz on friday... Plan was to weld the new flange onto the dump pipe and chuck the new turbo in

So not having heard anything I gave em a buzz around 6 today and asked em how it was all going... Yauvuz said everything had been put in and said he was about to chuck it on the dyno...

So I get a call about an hour later from him... he said that the turbo made 262rwkw with the new custom dump pipe and had potential for more... This surprised me so much as my old 3071R barely made 257rwkw... so I told Yauvuz not to worry bout the extra cash and tune her for what the new turbo could give...

And I cannot believe the results..

291RWKW from a GT3071R... I have full boost by 4000RPM haha... I love it... Yauvuz did inform me that the 291rwkw run was a freak run... but its still happily putting out 285rwkw all the time...

I coudnt believe it... but then I drove the car... and Holy Shit... that extra 35rwkw makes a huge difference!

I had no idea these turbos were capable of that sorta power... I was told their limit was 270kw tops...

and this tune isnt even that aggressive either... Yauvuz said I can thrash around all day and it should all hold...

So yeh... just wanted to share... so happy with the result... was intending on selling the car but prob gonna keep it now... :down:

Link to comment
https://www.sau.com.au/forums/topic/310413-290rwkw-with-a-gt3071r/
Share on other sites

  • Replies 45
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Posted Images

yeh will scan the dyno sheet tomorrow...

not too sure bout the size of the housing actually... will have to look into that one...

the turbo isnt the standard T25 3071 GCG advertise on their website... its T3 based... internally gated

ive had a few SR's pull that kind of number (20 psi) so yeah they definately are capable turbo's and congrats on the results, on an sr they are a little laggier than the gt2871 but just make sooo much more top end.

I'd like to have seen a pic of the back of that turbo . It sounds like your original turbo had one of those aftermarket turbine housings on it that suited the RB's original dump pipe flange .

Do you have the ID tag details of the new or old turbo ?

Good result , cheers A .

yr 3076 has full boost before 4000RPM? that wud b pretty nuts

Cool, cheers for the pic - as DP said, be interesting to see the hotside...

Yeah mine definitely has full boost before 4000rpm, I am really hoping to get it on the dyno soon and get a proper tune in so I can provide a sensible power and boost curve for it.

I can take a pic and get you details of the old Turbo... Still have that lying around...

I've got the item number of the new turbo... if you quote that to GCG, im sure u'd be able to get all the info your after

will put up the details after work

U

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Latest Posts

    • Who did you have do the installation? I actually know someone who is VERY familiar with the AVS gear. The main point of contact though would be your installer.   Where are you based in NZ?
    • Look, realistically, those are some fairly chunky connectors and wires so it is a reasonably fair bet that that loom was involved in the redirection of the fuel pump and/or ECU/ignition power for the immobiliser. It's also fair to be that the new immobiliser is essentially the same thing as the old one, and so it probably needs the same stuff done to make it do what it has to do. Given that you are talking about a car that no-one else here is familiar with (I mean your exact car) and an alarm that I've never heard of before and so probably not many others are familiar with, and that some wire monkey has been messing with it out of our sight, it seems reasonable that the wire monkey should be fixing this.
    • Wheel alignment immediately. Not "when I get around to it". And further to what Duncan said - you cannot just put camber arms on and shorten them. You will introduce bump steer far in excess of what the car had with stock arms. You need adjustable tension arms and they need to be shortened also. The simplest approach is to shorten them the same % as the stock ones. This will not be correct or optimal, but it will be better than any other guess. The correct way to set the lengths of both arms is to use a properly built/set up bump steer gauge and trial and error the adjustments until you hit the camber you need and want and have minimum bump steer in the range of motion that the wheel is expected to travel. And what Duncan said about toe is also very true. And you cannot change the camber arm without also affecting toe. So when you have adjustable arms on the back of a Skyline, the car either needs to go to a talented wheel aligner (not your local tyre shop dropout), or you need to be able to do this stuff yourself at home. Guess which approach I have taken? I have built my own gear for camber, toe and bump steer measurement and I do all this on the flattest bit of concrete I have, with some shims under the tyres on one side to level the car.
    • Thought I would get some advice from others on this situation.    Relevant info: R33 GTS25t Link G4x ECU Walbro 255LPH w/ OEM FP Relay (No relay mod) Scenario: I accidentally messed up my old AVS S5 (rev.1) at the start of the year and the cars been immobilised. Also the siren BBU has completely failed; so I decided to upgrade it.  I got a newer AVS S5 (rev.2?) installed on Friday. The guy removed the old one and its immobilisers. Tried to start it; the car cranks but doesnt start.  The new one was installed and all the alarm functions seem to be working as they should; still wouldn't start Went to bed; got up on Friday morning and decided to have a look into the no start problem. Found the car completely dead.  Charged the battery; plugged it back in and found the brake lights were stuck on.  Unplugging the brake pedal switch the lights turn off. Plug it back in and theyre stuck on again. I tested the switch (continuity test and resistance); all looks good (0-1kohm).  On talking to AVS; found its because of the rubber stopper on the brake pedal; sure enough the middle of it is missing so have ordered a new one. One of those wear items; which was confusing what was going on However when I try unplugging the STOP Light fuses (under the dash and under the hood) the brake light still stays on. Should those fuses not cut the brake light circuit?  I then checked the ECU; FP Speed Error.  Testing the pump again; I can hear the relay clicking every time I switch it to ON. I unplugged the pump and put the multimeter across the plug. No continuity; im seeing 0.6V (ECU signal?) and when it switches the relay I think its like 20mA or 200mA). Not seeing 12.4V / 7-9A. As far as I know; the Fuel Pump was wired through one of the immobiliser relays on the old alarm.  He pulled some thick gauged harness out with the old alarm wiring; which looks to me like it was to bridge connections into the immobilisers? Before it got immobilised it was running just fine.  Im at a loss to why the FP is getting no voltage; I thought maybe the FP was faulty (even though I havent even done 50km on the new pump) but no voltage at the harness plug.  Questions: Could it be he didnt reconnect the fuel pump when testing it after the old alarm removal (before installing the new alarm)?  Is this a case of bridging to the brake lights instead of the fuel pump circuit? It's a bit beyond me as I dont do a lot with electrical; so have tried my best to diagnose what I think seems to make sense.  Seeking advice if theres for sure an issue with the alarm install to get him back here; or if I do infact, need an auto electrician to diagnose it. 
    • Then, shorten them by 1cm, drop the car back down and have a visual look (or even better, use a spirit level across the wheel to see if you have less camber than before. You still want something like 1.5 for road use. Alternatively, if you have adjustable rear ride height (I assume you do if you have extreme camber wear), raise the suspension back to standard height until you can get it all aligned properly. Finally, keep in mind that wear on the inside of the tyre can be for incorrect toe, not just camber
×
×
  • Create New...