64_Frankenstein
15+ Year Contributor
- 91
- 0
- Mar 17, 2008
-
Statesville,
North Carolina
Have anyone here ever had a noisy oil pump? Sound like it might be coming from the block or the oil pump. Its soo noisy that I cant pin point where its coming from and that is the nosiest area I heard. Have you ever upgrade the cylinder head with bigger cams and stiffer valve springs and notice the cylinder head is noisy and louder then before? Because that's the second nosiest place I heard. Im not talking about a ticking noise or a bad lash adjusters. My major question is that are these random noise that cause faulty knock? According to the datalogger its showing 15 to 43 counts of knock when I give 20 to 30 percent of throttle body under boost and it pull mass amount of timing. My car hesitates during take off. Some time it start knocking while steady driving under 2500 RPM. During 3000 RPM+ on steady driving the knock starts to decrease. It knock soo bad that I have to decelerate so the knock will go away and accelerate back again. It is soo bad that I have to put the gear in 4th at 3000 RPM to reduce the knock. I rev 2000 to 3500 RPM on neutral it show 10 to 30 counts of knock according to the datalogger. I try to retarded the ignition timing few degree back and my car hesitates during take off. If its the oil pump that cause the noise then what I should of done I should went ahead and replace it during rebuilding. Before the rebuilding the oil pump run fine. I compare the noise that I hear from my brother 90 Eclipse GST to mine and I notice my car have more engine noise. It dont sound like a piston slap, rod knock, or a hammer slamming up against the cylinder block. People say use tapes on knock sensor help reduce faulty knock? If its not a bad or lose knock sensor then I dont know what else to do. Have you DSMers ever had this problem after rebuilding and upgrading?
Heres some modification I done during rebuilding. I hope this information will give you a idea what could cause this faulty knock. I have no timing cover.
Run only 93 octane pump gas
Ignition timing is set to stock
4G64 crankshaft
Eagle Rods with new rod bearings Rods have no play while its connected to the crankshaft
JE piston 40 over Piston have no major play while its in the cylinder.
CompCams
Crower valve springs
Balance shaft remove
Thanks in advance.
Heres some modification I done during rebuilding. I hope this information will give you a idea what could cause this faulty knock. I have no timing cover.
Run only 93 octane pump gas
Ignition timing is set to stock
4G64 crankshaft
Eagle Rods with new rod bearings Rods have no play while its connected to the crankshaft
JE piston 40 over Piston have no major play while its in the cylinder.
CompCams
Crower valve springs
Balance shaft remove
Thanks in advance.





