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Op6 Turbo Rear Housing Rb25Det

Aleckr33

By Aleckr33,
in Engines & Forced Induction

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Aleckr33 Rising Star

Aleckr33

Posted
Posted

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

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https://www.sau.com.au/forums/topic/347656-op6-turbo-rear-housing-rb25det/
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GTScotT Grand Master

GTScotT

Posted
Posted

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.

hypergear Grand Master

hypergear

Posted
Posted

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 Grand Master

paulr33

Posted
Posted

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

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