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http://www.skylinesaustralia.com/forums/in...opic=80624&st=0

HKS 2530:

TURBINE:

Inducer = 53.8 mm

Exducer = 47.0 mm

Trim = 76

A/R = 0.64

COMPRESSOR:

Trim = 63

Inducer = 47.7

Exducer = 60.1

A/R = 0.60

R34 N1's

TURBINE:

Inducer = 53.85 mm

Exducer = 42.4 mm

Trim = 62

A/R = 0.64

COMPRESSOR:

Trim = 55

Inducer = 44.57

Exducer = 60.1

A/R = 0.60

HKS GT-SS

TURBINE:

Inducer = 53.85 mm

Exducer = 42.4 mm

Trim = 62

A/R = 0.64

COMPRESSOR:

Trim = 56

Inducer = 44.46

Exducer = 59.41

A/R = 0.42

Edit: I have my suspicions that some of the A/R numbers are off. It looks to me for all the world like the R34 N1s were the base for the GT-SS, although someone else will have to comment as to whether they use the same catridge.

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Hey No one

I recently bought a pair of Garrett GT2860R - 707160-5 and i'm happy. Lots of power on tap and very drivable.

My current RB is getting a bit long in the tooth for big boost and HP, but i'm still having lots of fun. Had some adjustable cam gears fitted as well as the usual bolt on mods

TURBINE:

Wheel dia. = 53.8 mm

Trim = 76

A/R = 0.64

COMPRESSOR:

Trim = 62

Inducer = 47.2

Exducer = 60.

A/R = 0.60

Edited by Mr. Keets
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hey crimmo and mr keets

do you guys have any dyno sheets of them yet??

also whats the spool time like?

and cheers to Iwells for the link .... big help hey

Hey No one,

sorry i'm a million miles from my R at the mo, so i cant post the sheets. Check out turbobygarrett.com and you can see the maps, Mine is making 406hp at the back wheels, I picked up 70rwhp on a 17 year old engine...fuel system running out of puff now. Every combo is different and so is the tune up.

Find a good tuner and ask to see some dyno sheets.

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From my research, it looks to me as Lucien suggested: That the R34N1 are more or less the same spec as the HKS GT-SS.

Now remembering that both of the above are based on a Garrett Turbo,

The version of Garrett GT2860r that I bought is the "-7", and I got this because it had more or less the same specs as the GT-SS.

I've recently gone back to the Garrett Website and now find that they have actually mentioned that these are indeed the "OEM on Nissan RB26DETT used in Skyline R34 GTR N-1..."

You can see it here:

http://www.turbobygarrett.com/turbobygarre...0R_707160_7.htm

Read the little blurb on the left...

...and yes - they are an excellent turbo I think.

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