im towards the end of building a xu5 motor to freshen up the si a bit. i know it may have been asked before but cant seem to find much on it.
Just wondering if it would be ok to run a std s2 gti xu9 cam in it to give it a little more poke, rather than the std si cam, without to much trouble?
its had 1.5mm off the head new guides 3 angle valve seat etc with std bottom end. i did the calcs a while ago now but hoping to go from 8.95 to around 10.4 ish? i will be using a baker adj cam gear and filing out the mount so it all sits back together and i can get it tuned up right. its only a daily drive that i want to have some fun in while i fix up something else.