Wut, who ever said they were? All twin cam flat fours are. Phase one SOHC 1.8’s and 2.2 are not, phase 2’s are. The BOXERSIX(
haha:lmao:ninja) 3.3L Eg33 is non interference, while the 3.0 EZ30 and 30R as well as the 3.6 tri-puke-a motors are…
hence why I always say the Eg33 was subarus best motor because it was the largest displacement core built off 2.2L phase 1 geometry and is noninterference. Plus it looks really good shoehorned into an STI engine bay…
And if you want to get technical I can start listing off the WRC and GPn variants as well as there super short run of an indy motor…:zip