Quote:
Originally Posted by Irace86.2.0
FB25B doesn't have direct injection and has 10.5:1 compression. FB25D has direct injection and 12.0:1 compression. It sounds like you are talking about using the FA25B, so are you suggesting ditching the direct injection system? Have you seen the differences between the FA20F and FA20D blocks? They look different in many ways. I doubt even the FA24D will be identical, but it has the best chance.
https://dsportmag.com/the-tech/educa...s-of-the-fa20/ |
Direct injection system is built into the heads not the blocks. If you swap the FA20 heads on the FB25 block it will be capable.
THE only issue with using a FB25 block in the RWD configuration is the starter clearance. You either need to mill/machine/grind out a clearance for the starter gear.
I know someone who already did this build using WRX heads on his Impreza