Nhaden

I have a Harman/Kardon subwoofer system that mounts under the rear parcel shelf. Stripped from my E46 M3. Should fit other E46s, not sure if sedans are different. Let me know if interested.

The data logger is an AIM Solo DL. It is spliced into the CAN Bus as the OBD port apparently isn't updated fast enough on the E46 model. I don't know the protocol, but it sounds like it would be DS2. Oil temperature reading at dead cold is the ambient temperature, so that seems right. It increases matching the dash read-out (when it gets over 50). How big a cooler did you need for an S50?

Thanks very much for all of the responses. The measurement setup is the stock sensor, which I now understand is also the oil level sensor in the sump. This sends data to the ECU and I am logging data out of the ECU which is the same as the information sent to the dash. Looking further at the logs, the temperature goes up when turning right and down, but not by as much, when turning left. A guy at work suggested the solution was to just race NASCAR! oil temp.pdf The attached file is one lap (not the worst case) showing lateral G and oil temp. Red is right turn, blue left turn and green straights. Other advice is that it isn't really possible for oil to heat up as quickly as 25 degrees in one corner so there must be a measurement problem. So I need to replace the oil level sender and then check if the problems are still there. It does seem likely that I will need more cooling, but I will get a better read on the numbers first. M3_Power's suggestion of trying to duct a bit more air from behind the cooler seems sensible. The aftermarket coolers that fit in the stock position (e.g. BimmerWorld) seem pretty expensive, so if I do need a new cooler, I will probably go with a more standard aftermarket one as I have plenty of room in front of the radiator.

I am having an over-heat problem with my race car and am looking for suggestions... I am seeing a significant increase in oil temperature when going through corners on the track. This shows up on the dash display and the datalogger reports from the ECU. Running along the straights it cools down again, but often not enough by the time I get to the next corner. The worst case is Higgins at Manfeild where I gain 25 degC through the corner. I back off when I see numbers over 140 degC, so don't know how high it could go. Water temperature stays in the normal range (about 85 degC). I am running the stock oil cooler with air cond and front fan removed. I fitted an oil diverter valve, but that doesn't seem to have made any difference. Oil is 10W60 Castrol. Has any heard of this? Possibilities that occur to me are: Sensor problem that is affected by lateral G's (seems unlikely) Partial blockage in oil cooler meaning it stops working under lateral load Something in the engine that causes it to heat under load TIA

Hi Beeker. Looks good. A few questions: Will you weld the A pillars of the cage to the A pillars of the car (probably with the windscreen out)? You can do the same with the B pillar and possibly roof bars. I assume the seat won't be too close to the tunnel because you need to get the lap belt into it? Why attach to the side of the rear strut mount rather than the top - or is there other reinforcing there?