Op6 Turbo Rear Housing Rb25Det

[Aleckr33]

Hey guys, I have a R33 Gtst series 2, i was checking out my turbo today and noticed i had a "OP6" stamped on the rear housing of the turbo, Is that the standard rear housing from factory?

Iv been told when i bought the car it is a standard turbo, I tried researching around here on the forums and couldn't find anything useful.

Why im asking, people seem to mention rb25 turbo's and asking if OP6 is on them, so im thinking it's not the factory rear housing? Any help would be great.

Thanks

[Zaver]

The OP6 turbo is the stock turbo for the R34 GTT it comes on the RB25 Neo engine, its not the stock turbo for the R33 RB25 engine...

The OP6 turbo is a better turbo than the stock R33 turbo...

[zebra]

Could also be an OLD 300zx turbo

[Aleckr33]

Oh so it's better.. cool.

So it would be a R34 GTT turbo or a R33 series 2 turbo with a OP6 rear housing on the back?

Thanks for quick reply!

[R31Nismoid]

Possible that very very late R33 S2's got them, but either way its nothing special as is

[GTScotT]

Put it this way, you have the pick of the bunch as far as the "stock" item goes.

If you really want to keep the thing stock, its fair to say you have the better one (honestly not by much). Yet if you decide to high flow, that is the better rear housing to work with.

[Ad's]

Sorry for the thread hijack.

Would the rear housing make that much of a difference if high flowed as a pose to a S2 R33 turbo?

[hypergear]

Sorry for the thread hijack.

Would the rear housing make that much of a difference if high flowed as a pose to a S2 R33 turbo?

Yea~~ 345rwkws (still going) with OP6. 273rwkws (maxed out) with 21U.

[paulr33]

the most we have seen with OP6 rear is 270rwkw on mild GTST with 98 fuel

the most we usually see with std GTST rear (non OP6) on a mild GTST is around 260rwkw

theres about 10rwkw difference between the normal housing and OP6