R32 GTR Upgrading turbo's ?

[Bradz]

Has anyone got opinions on upgrading R32 GTR stock turbo's to Steel Wheel N1 turbo's ?

Are they good ?

[Skym]

Which N1 turbo's?

Why I ask is R32 N1 GTR, R33 N1 GTR, R34 N1 GTR used different size N1 turbo's.

If from a R34 Nur or R34 N1 engine, they can be unreliable (had 3x turbo failures on prototype N1 GTR at Nurburgring 24 hour race).

R33 N1 (non ball bearing) is more reliable but produces less hp than R34 N1 turbo's (ball bearing).

On a lower budget you can rebuild stock R32 GTR turbo's (hybrid turbo's) with as far as I know, Nissan Pulsar GTi-R turbo CHRA, wheels, machined stock R32 GTR turbo (or R33 GTR, R34 GTR stock turbo housings) housings to suit (similar to N1 turbo's), enlarged wastegate hole on exhaust housing, flap to suit to prevent boost spike at higher rpm.

Some call a hybrid turbo a high flow turbo, but high flowing is backcutting blades, porting housings, etc to make it flow more. Hybrid turbo is using parts from different turbo's.

Contact GCG -

http://www.gcg.com.au/

HKS 25/30 would be more reliable, produce more hp vs N1 turbo's.

[dsmart]

The great turbo debate!

From my experience and concensus from many other rebuilding the stock turbines is not the best way to upgrade. The cost is usually 75% the price of simply buying new turbo's garrett -7 -9 which are better in everyway then the stock ones. I have nothing against steel wheeled stock turbo as they have been proven to make good power but they are old technology and to me the price gap doesnt justify trying to save them.

[Daryl @ RightDrive]

For the money that you would invest in doing that work, I'd recommend checking to the Garrett -5 or Tomei Arms kit. Both of those kits should good to 600hp. But it depends on what your power goals are. There is no point upgrading your turbos for bigger power if you are going to keep everything else stock.
I'd put together a complete plan for your car before you start making any decisions on turbos.

[steveo1502]

I have a set on my car, there decent , but not really an "upgrade", I got a really good deal on em , I couldn't say no, they were ultrasonically cleaned and rebuilt and balanced by a company here in cgy with a kit from eBay, I paid 500 for the pair, and sold my stockers for 300, so 200 bucks. that's less than 10% of a tomei or Garett set, if cheap is what your after there great, but like me you will be looking for a better set. I've run 15 psi for 2 yrs , and I drive it pretty hard,

[zero_wheeler]

I've also been wondering the same thing, My buddy here just picked up the ebay steel turbine rebuild kit and a set of blown stockies to give it a shot, I'd imagine they can hold up to a little more boost. Any ideas where they would max out?

[hp44incgtr]

From my experience and concensus from many other rebuilding the stock turbines is not the best way to upgrade. The cost is usually 75% the price of simply buying new turbo's garrett -7 -9 which are better in everyway then the stock ones. I have nothing against steel wheeled stock turbo as they have been proven to make good power but they are old technology and to me the price gap doesnt justify trying to save them.

xxxx3