Last year i changed the main bearings with acl and the rod bearings with clevite. Along with these i changed the oil pump with a new geniune one. Thats all. After that i hear a strange squeezing sound al over the engine. It starts happening at certain rpms and follows the engine revs. When the engine is cold it starts at 2k after the engine warms up it moves forward about 2.5k All these with heavy oil 15w40 that i used for a couple miles just for a firts quick change. When i used 5w30 the point where the noise appears changes upwards to 3000+ cold 3500-4000 hot. So i run the car without aux belts, the noise is still there. Have heard all the cam belt tensioners seems ok. I have electric fans so no e-fan. Also i have tomei adjustable cam pulleys so the vvt is deleted. After 20.000 km i had to pull out the engine due to piston crack. So checked everything again. All the bearings was good, the oil pump seems ok generally nothing strange found at all. Now that i run it again with a heavy oil the same think happens. Any ideas of what this should be? Also it makes that noise as far as i start it cold just for a couple seconds untill the pressure is up. I ll try to record a video before i change oil because now it is loud. [ http://youtu.be/UiJMaso1sYE ]
Follow Ups
strange engine sound after bottom end rebuild - bakakas13:59:17 01/09/13
13:59:17 01/09/13
