Rb25 Head flow characteristics

[RB32DETT VL]

Hey guys

Does anyone know what a stock rb25 head can flow in NA form? and any info on the possible port characteristics?

Cheers, John.

[Richelieu]

If you know the intake valve diameter you can work out the power potential using the calculations from the attached website.

http://www.pumaracing.co.uk/pp03.htm

[paulr33]

Try: http://www.tomei-p.co.jp/_2003web-catalogu...haft-specs.html

Not sure if this is what you're looking for. Its the factory cam spesc for all the nissan mainstream RB series engines. Not sure if you can work out the "flow" from those figures etc...

Got any pics of the 32dett ?

[RB32DETT VL]

Thanks for the links guys.

Nah, haven't got any pics yet, I'm in the slow process of getting the parts to build it...

[Dsturbd]

Apparently theres two different heads for the 25 one flows heaps better than the other....