Identifing a r32/r33 rb26

[mr_nissan]

I'm looking to finally start my rb swap, I know of the common oiling problem associated with the r32 series motor and Id like to avoid them. My question is how can I visually tell the difference between the r32 and r33 motors so I don't end up with a r32 motor. Did all r33 rb's have the oil collar issue fixed?

[noodl35]

read the first page of this thread, it tells you everything about it.

post5434103.html#p5434103