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

[The Mafia]

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

[Dose Pipe Sutututu]

Oh hai 😄

[Dose Pipe Sutututu]

Ask @Piggaz he's got a few front sumps/diffs in his museum of RB parts, including a Stagea one.

[The Mafia]

Thanks mate, I will try and get a hold of him. Hopefully he replies here

 

[Piggaz]

It’s needed. Spent too long cleaning it. Sorry 🤪

[The Mafia]

hey mate, so can you help? haha

[Dose Pipe Sutututu]

He must be on the cans again.... karnt can't even read the language his ancestors invented lol

[Piggaz]

I have one but I need it. I can’t help you. Lol

Sorry. 

[The Mafia]

haha are you drunk? I just want to know if they are the same. As per the question in the title: 

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

[Piggaz]

Oh right.

By all accounts they look the same. 🤣
 

Can take some decent photos of the Neo one tonight and post them up here.

[The Mafia]

do you know if they are the same? 

[Piggaz]

Cannot confirm 100%, no.

[The Mafia]

Okay, thanks anyway

[r32-25t]

Yes they are the same apart from the diff ratio 

[The Mafia]

Thanks mate

[corbic]

How about the RB20 AWD sump?

[RB335]

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.
 

Edited January 8, 2024 by RB335

[Duncan]

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