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RB26 AWD Sump / RB25 AWD Stagea Sumps - Are they the same?

The Mafia

By The Mafia,
in Engines & Forced Induction

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The Mafia Grand Master

The Mafia

Posted
Posted

Hi Gents

Long time no speak lol. I was wondering if the RB26 AWD sump and the RB25 Neo Stagea AWD sumps were the same? 

I totally understand that the diff ratios etc might be different. That doesn't matter though diff is being replaced.

Thanks

RB25AWDsump.jpg

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  • 2 years later...
RB335 Rising Star

RB335

Posted
Posted (edited)

RB25 NEO AWD engines use a different bolt pattern on the sump than other AWD RB engines, the spacing and angle between two bolt holes near the input shaft area differ, measure them if looking at second hand sumps to ensure same as yours

The input shaft flange looks as if it might be a different length too ?, unsure about this.
 

image.jpeg.f9cfff5224c0e08cd88981593c22b1d4.jpeg

Edited by RB335
  • Like 1
Duncan Grand Master

Duncan

Posted
Posted

Interesting. The casting is different (but interchangeable) for R34 RB26 because it used a physically larger crown wheel than could fit in the early model housings, not sure if that is what you are seeing here.....

No idea why the block bolt pattern is different though, I've never heard of any sump that wasn't interchangeable on the rb AWD block

  • 1 year later...
Jason Abell Newbie

Jason Abell

Posted
Posted

I have information on this for anyone that comes looking again.

https://www.facebook.com/share/p/18gsbFaYTU/

The rb25det neo from the stagea has the same sumo as rb26 and r32 gts4 (and other awd models). The sump that has caused so many problems during swaps are from the awd neo Gloria's. The casting numbers on the block and oil pans are different so this may help identify if you can't confirm where the motor came from

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