Piston slap is common if you have 2 different metals with different coefficients of thermal expansion... IE aluminum pistons/ Iron block... Im new to BMW's but i think post m50 most blocks are aluminum...
Originally Posted by Joshwa1234
Does it smoke at all from the exhaust when you rev it because it could possibly be just piston slap or a wrist pin..........
Or if your rings are shot to all hell...
Daily: 1999 328i (202k)- Sport and winter package, 5speed, Jet Black, hellbeige, e60 Short throw, cross drilled rotors, koni, H&R, ASA AR1, Vibrant stealth, basslink
Track: 1995 Mustang GT (230k)- 306ci, 5 speed, MGW shifter, Trickflow Heads, Trickflow intake, street cam, shaved and tucked engine bay, slammed, 1 3/4'' long tubes, tuned with moates.
Last edited by Nerdy46; 01-25-2013 at 10:57 PM.