29-05-2019, 12:46 PM
My RP's engine rumbles at the bottom end, even though I have recently replaced the rear main bearing (about 2K miles ago. When I had the engine apart to do this, there was no discernible 'rock' in the front mains and the big ends were all nice and tight with no apparent movement.
The rumble is not getting any worse. In fact, it seems to lessen as the engine gets warm. As the car is generally running well and reliably, and the oil pressure is always where it should be (between 2 and 4 lbs.sq.in.hot, using a good quality 10W/40 semi-synthetic oil), I am inclined to leave well alone at least for the time being.
Incidentally, the only Seven that I have driven that didn't rumble was a gem of a two bearing Ruby many years ago, which was a one owner and 60K miles from new example (When one still came across cars like that!)
The rumble is not getting any worse. In fact, it seems to lessen as the engine gets warm. As the car is generally running well and reliably, and the oil pressure is always where it should be (between 2 and 4 lbs.sq.in.hot, using a good quality 10W/40 semi-synthetic oil), I am inclined to leave well alone at least for the time being.
Incidentally, the only Seven that I have driven that didn't rumble was a gem of a two bearing Ruby many years ago, which was a one owner and 60K miles from new example (When one still came across cars like that!)