hey guys i have a 1994 180sx with a blacktop sr20 with a knocking issue. i've just removed the sump and replaced the rod bearings as it had a heavy n knock which i thought was rod knock. the car still runs well and idles fine but from about 2500rpm onwards there seems to be a knock coming from the engine. i was just wondering if any one on her has heard of or has had the same problem anyone who knows a little about these engines or who may be able to suggest what this could be i would appreciate if yous could help in any way to resolve this issue cheers guys any help would be much appreciated.... Some original photos have not been recovered yet.