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290rwkw With A Gt3071r

usmair

By usmair,
in Engines & Forced Induction

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usmair Mentor

usmair

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Posted

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:

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usmair Mentor

usmair

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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

STATUS Grand Master

STATUS

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Posted

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.

discopotato03 Grand Master

discopotato03

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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 .

Lithium Grand Master

Lithium

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Posted
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.

usmair Mentor

usmair

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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

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