What are the differences between the 13b in the FC and the 13 b in the FD?

TWIN TURBO !!!!!!! but seriously, im not fully sure besides the ports being a little different i think ?? martin would know but his bitch ass probley doesnt read this section much since his car isnt even driveable https://www.nopistons.com/forums/pub...IR#>/bigok.gif

Yeah, i knew about the twin turbo part but are there any internal differences?

FD has larger ports. The corner seal springs are different with the FD being a better design. The stationary gears are also hardened in the FD(I think https://www.nopistons.com/forums/pub...1047683561.gif )

Also different (bigger) ports, different plates (mount holes in rear plate FD, middle FC), along with the different gears are different bearings, jeez, the list goes on.



Outside there are heaps of differences...