RB20DET, RB25DET, and RB26DETT Manifolds - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Brodiemans · 06-25-2006, 01:20 AM

Well ive been searching, and i havent been able to find any info on this, so here we go.

Just curious if the RB26 exhaust and intake manifolds will bolt up to a RB25 or RB20. I know the RB26 head will fit onto a RB25 with no serious modifications, but are the manifolds interchangable?

Thanks guys

C-unit · 06-25-2006, 01:45 AM

nope..u need a special adaptor to fit the RB26 manifold to RB25 and RB20, the exhaust is the same. i have a photo for it

Brodiemans · 06-25-2006, 01:47 AM

so the exhaust bolts up exactly the same, but the intake needs an adapter to get those ITBs on the RB20 and RB25?

C-unit · 06-25-2006, 02:20 AM

nono, u need the Bravery adaptor (around 300USD in japan) to run the exhaust which can give u twin turbo and a Blitz intake adaptor (around 800USD in japan) to use the ITB and manifold. I got this article from the december 2005 Option magazine.

Brodiemans · 06-25-2006, 02:23 AM

oh ok, so basically a waste of money, ill just make myself a custom manifold (Top mount manifold with a T3 flange for the RB25DET, Cut off the flange and weld in a nice T4 flange for a T88)

Thank You Very Much

06-25-2006, 01:20 AM	#1
Brodiemans Join Date: Oct 2005 Location: So Cal Posts: 17 Trader Rating: (0) Feedback Score: 0 reviews	RB20DET, RB25DET, and RB26DETT Manifolds Well ive been searching, and i havent been able to find any info on this, so here we go. Just curious if the RB26 exhaust and intake manifolds will bolt up to a RB25 or RB20. I know the RB26 head will fit onto a RB25 with no serious modifications, but are the manifolds interchangable? Thanks guys

06-25-2006, 01:45 AM	#2
C-unit Nissanaholic! Join Date: Apr 2005 Location: Vancouver, Hongkong. Age: 40 Posts: 1,808 Trader Rating: (7) Feedback Score: 7 reviews	nope..u need a special adaptor to fit the RB26 manifold to RB25 and RB20, the exhaust is the same. i have a photo for it __________________ Instagram CW_unit

06-25-2006, 02:20 AM	#4
C-unit Nissanaholic! Join Date: Apr 2005 Location: Vancouver, Hongkong. Age: 40 Posts: 1,808 Trader Rating: (7) Feedback Score: 7 reviews	nono, u need the Bravery adaptor (around 300USD in japan) to run the exhaust which can give u twin turbo and a Blitz intake adaptor (around 800USD in japan) to use the ITB and manifold. I got this article from the december 2005 Option magazine. __________________ Instagram CW_unit

06-25-2006, 01:47 AM	#3
Brodiemans Join Date: Oct 2005 Location: So Cal Posts: 17 Trader Rating: (0) Feedback Score: 0 reviews	so the exhaust bolts up exactly the same, but the intake needs an adapter to get those ITBs on the RB20 and RB25?

06-25-2006, 02:23 AM	#5
Brodiemans Join Date: Oct 2005 Location: So Cal Posts: 17 Trader Rating: (0) Feedback Score: 0 reviews	oh ok, so basically a waste of money, ill just make myself a custom manifold (Top mount manifold with a T3 flange for the RB25DET, Cut off the flange and weld in a nice T4 flange for a T88) Thank You Very Much