What OE cast turbo manifolds did Nissan use - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

Chris Wilson · 11th August 2008, 11:14 AM

Apart from the stock, common or garden cast iron twin turbo manifolds, what other ones have Nissan produced? I believe that the N1 engine may have used different, freer flowing cast manifolds, but what did the Group A cars (Gibson Motorsporrt, for example) use? Were they limited to production cast manifolds? Did they "interpret" the rules broadly and have one offs cast with better flow, or did they port stock parts? Just curious as to what the ultimate cast manifolds are for the TT set up. Many thanks.

lightspeed · 11th August 2008, 12:42 PM

Group A manifolds were to regs - homologated to the Nismo R32 version.
Same as stock but the flange was opened out to match the turbo inlet.

Not sure if custom castings were made to interprete the rules.

11th August 2008, 11:14 AM	#1 (permalink)
Chris Wilson GTR Register Member Join Date: Aug 2001 Location: Shropshire Posts: 1,489	What OE cast turbo manifolds did Nissan use Apart from the stock, common or garden cast iron twin turbo manifolds, what other ones have Nissan produced? I believe that the N1 engine may have used different, freer flowing cast manifolds, but what did the Group A cars (Gibson Motorsporrt, for example) use? Were they limited to production cast manifolds? Did they "interpret" the rules broadly and have one offs cast with better flow, or did they port stock parts? Just curious as to what the ultimate cast manifolds are for the TT set up. Many thanks.

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11th August 2008, 12:42 PM	#2 (permalink)
lightspeed GTROC Member Join Date: Jul 2002 Location: South-west Posts: 1,796	Group A manifolds were to regs - homologated to the Nismo R32 version. Same as stock but the flange was opened out to match the turbo inlet. Not sure if custom castings were made to interprete the rules.