Rb25Det Crank Case Elbow Sizes

[obe353]

Hi,
I'm trying to work out what size hose I need th go from the elbow on the rocker cover to my catch can.
One I know the elbow size, I can figure out the hose size which means I can then work out the fitting size for my catch can.
I don't want to have size up and size down fittings.

Can take a picture if you don't know what i'm talking about

Thanks

[wedge_r34gtr]

-12 and it will be tight.

Edit: I'm assuming rb25 rocker cover breathers are the same size as the 26's

Edited January 19, 2014 by wedge_r34gtr

[obe353]

Hmmm.. I think they may not be..

According to this post, it looks like RB20 is -10 / RB26 is -12 / RB25 is ??

http://www.skylinesaustralia.com/forums/topic/396791-rocker-cover-breathers-dash-10-size/page-2

[wedge_r34gtr]

you are just fitting the hose to the stock one right? measure the OD and match it to a AN pipe size