Suspension, Brakes, Tires & Wheels - uk civic, lowered and knocking!

i have lowered my 94 civic coupe, on 45mm or 4.5 centimetres lowering springs, i have kept the standard shocks but the bushings are squeaking and knocking?? is this a common problem?? any ideas how to help?? thanks alot dudes

i had the same problem, mine kept making this knocking noise on throttle and on right hand turns. finally i found one of the bushings in the right front lower control arm was thrashed and i pulled it out and wrapped tape around the inner sleave, then pushed it back in and it stopped the noise for a couple of months while i was waiting for my polyurethane bushing kit to come in. now i have to get the old bushings pressed out so i can put the new ones in.