before anyone yells at me, yes i have searched already on google, ht itself, and as many other car-search places as i could find, and still havent found a satisfactory answer to this so maybe somebody has had the same problem. my 91 crx si to zc swap runs really rough and somebody suggested it might not have oil pressure. ive already done the timing the best i could, and it runs smoother than it ever has. when you press the gas and it gets to like 3400 rpm it makes a loud squealing noise, and im scared to go any higher until i know its not gonna bust something. also somebody suggested my coolant system might not be drained properly but i already squeezed all the hoses with the cap off and big bubbles came out so i assume most of the air is out. any help would be appreciated, thanks, and sorry for the long post