AAN into Ur quattro, 400-450 Bhp Target

[diesel des]

The map shows a clear improvement in surge over the gt2871. It will be less likely to surge that that. I have little to no surge issues on the 2871. Overlay the two maps, the 56 trim 71 and the new 67 and you will see. Also the 67 has the anti surge housing so you should be able to run off the left of the map slightly without getting into dangerous surge.

[A80Avant]

my 3076 with 0.63ar with a billet wheel is slightly surging on 5th and 6th if i go WOT from 2500rpm at about 3000rpm when i already have 1.8-1.9bar. I already have a ported head, so i would assume that any smaller turbine from a garrett would be more prominent to surge.

I havent seen the wheel diameters, of the 2867, but if they are closer to the 2871, and being billet it scares me!

[Jamo]

I agree still be worried by surge though

[diesel des]

The 2876r is a very miss matched turbo with the compressor being oversized for the turbine. The 71 is better, but the new 67 should be about perfect.

[Jamo]

Whatever dude the post wasn't for you

[diesel des]

Yea map gives better surge margin than the 71r so should allow better spool. I wonder if atp would sell me the wheel and comp housing to upgrade my 2871r...

[DJones]

STOP.........

Its a New Year, starting to sound like a bunch of women. I can sit in my kitchen and talk to my Mrs for comments like this....

[prj]

Yeah read above quote to which I was responding

lol, 3 pages back to your actual post.
Yeah, maybe a good idea to use the quote function next time...

[Jamo]

Not many people have used the GT2876R and I was wondering why not..

Yeah read above quote to which I was responding

[prj]

2876 has been used on at least 4 forum cars with plots
It used to be called 25/40 iirc
Pekkas and aromatic2 both had around 400-450 search their posts

Except it is a GT2867 in this case, not a GT2876.

[A80Avant]

If that is the case then it may surge more than the 2871 as the billet wheel being lighter will work faster

sent using Android

[URquattroGus]

I know that
Gt and gtx makes no real difference gtx is billet you'll find the turbo will perform the same with extended bhp range due to garretts design of the gtx range
Do not dismiss the gt results

If you look at the compressor and turbine sizes whilst taking into account trim too, its more like a GT2871R plus a bit.

[Jamo]

I know that
Gt and gtx makes no real difference gtx is billet you'll find the turbo will perform the same with extended bhp range due to garretts design of the gtx range
Do not dismiss the gt results

[A80Avant]

its a GTX turbo Jamo, not the GT.

[Jamo]

2876 has been used on at least 4 forum cars with plots
It used to be called 25/40 iirc
Pekkas and aromatic2 both had around 400-450 search their posts