Twinturbo Manifolds

[daisu]

Hey,

I want to fit twin turbos to my RB25/30 combo. From what I've read, there are two options... Either modify the GTR manifolds to fit the RB25 head, or hit up some aftermarket avenues for some custom manifolds.

I did try searching the subject both within this forum and on the rest of the internet but most I could find was a couple cases where they had modified the GTR manifolds to fit the 25 or 20 head (manifolds are compatible between RB20 and 25).

Does anyone know how much modification is required to get the GTR manifolds going on the 25 head?

Alternatively, does anyone know if VG30DETT manifolds will work on an RB25 head?

Thanks

-Luke

[R31Nismoid]

I searched with "twinturbo" & "GTR Manifold RB25"... this is what came up...

http://www.skylinesaustralia.com/forums/Rb...mp;hl=twinturbo

http://www.skylinesaustralia.com/forums/RB...r+manifold+RB25

http://www.skylinesaustralia.com/forums/Rb...r+manifold+RB25

(page 3-4 more useful in this thread)

http://www.skylinesaustralia.com/forums/Tw...r+manifold+RB25

VG30 = totally different.

[daisu]

Ah yes, it's funny how slightly different search queries can end up with completely different results.

But that's what I needed to see, there is photo of the adaptor plates, which shows the difference in flange between the 26 manifolds and the 20/25 heads.

Using an adaptor plate seems like the logical option, but i'll need to use 2 head-manifold gaskets

[TiTAN]

or you can get someone to chop off the 26 flange and weld on a 25 one.

[WHITER33GTS-T]

I have twins on my 25/30

You have pm

[daisu]

Either way, I'm picking up some GTR manifolds next weekend. Now to decide what turbos.....