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I have question about timing chain noise at start up is it because the oil is not staying on the chain so it runs dry. Oil not thick enough or what?
I used to have a 280Z and it will start on first try , and I never heard a rattle or noise come from the chain or anything like my Nissan truck.
Also the time it take the engine to pickup oil from filter and deliver it to major components of engine have anything to do with it. For example the position of the filter if it is verticle (facing down)the oil will drain back to the pan will take longer ,but if its like old chevys facing up where the oil stays in the filter it won't take as long. Or the main bearings could have more clearance than normal resulting in low oil pressure at start up. And does the grade of oil you use effect it, using thin oil doesn't stay on metal surfaces as good but shoot through oil jet at normal rate or too thick which take forever to shoot oil through the oil jet however stays on metal surfaces longer.
Almost forgot the grade of oil I used on that 280Z was Castrol 20W-50@ every 1500 miles . I could feel the differance in the accel pedal once I change the oil it would rev easier . Not sure if that was the proper grade I suppost to use. down here in Texas
Jon
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