ok i need help i have been changing heads on my d16a6 motor on my 90crx i found a really good head off a 2000 civic y7 and i cant get it timed right if its the problem it stumbles on acceleration every thing is kind of ok and normal but once i hit 3000 rpm it starts blowing out the intake i have the marks lined up but see 2 diff motors the timing is going to be diff i need some help on timing this is driving me nuts thanks