R56 Water Temperature Revelation
#1
Water Temperature Revelation
Back story -- I overheated on the track and warped the head. I had noticed that the water temperature was typically 220 F or higher. The problem was compounded by having the rubber ring coming off the water pump. Being concerned I started investigating.
I have discovered, for my 2008 S, a way to keep the water temperature at about 180-190 F. Turn on the AC AND have the fan on high. This gives be more room for heating before boiling over. It does not depend on anything else -- sport mode, highway speed, fan speed, etc. Since I did not want the AC compressor running at 6,000 rpm I just pull the AC clutch fuse when I take the car to the track.
Previously I had several cases where the car turned abruptly left or right -- rear end coming around. Since I started running with lower water temperatures this has not happened. I can only assume that the car had been overheating and blowing out some antifreeze -- making the read end slippery.
I can not speak for all years or models -- who knows when the BMW engineers change the firmware. But it is worth trying if you have overheating problems.
I have discovered, for my 2008 S, a way to keep the water temperature at about 180-190 F. Turn on the AC AND have the fan on high. This gives be more room for heating before boiling over. It does not depend on anything else -- sport mode, highway speed, fan speed, etc. Since I did not want the AC compressor running at 6,000 rpm I just pull the AC clutch fuse when I take the car to the track.
Previously I had several cases where the car turned abruptly left or right -- rear end coming around. Since I started running with lower water temperatures this has not happened. I can only assume that the car had been overheating and blowing out some antifreeze -- making the read end slippery.
I can not speak for all years or models -- who knows when the BMW engineers change the firmware. But it is worth trying if you have overheating problems.
Last edited by rcleeny; 07-22-2014 at 08:21 PM.
#2
ac on
Back story -- I overheated on the track and warped the head. I had noticed that the water temperature was typically 220 F or higher. The problem was compounded by having the rubber ring coming off the water pump. Being concerned I started investigating.
I have discovered, for my 2008 S, a way to keep the water temperature at about 180-190 F. Turn on the AC AND have the fan on high. This gives be more room for heating before boiling over. It does not depend on anything else -- sport mode, highway speed, fan speed, etc. Since I did not want the AC compressor running at 6,000 rpm I just pull the AC clutch fuse when I take the car to the track.
Previously I had several cases where the car turned abruptly left or right -- rear end coming around. Since I started running with lower water temperatures this has not happened. I can only assume that the car had been overheating and blowing out some antifreeze -- making the read end slippery.
I can not speak for all years or models -- who knows when the BMW engineers change the firmware. But it is worth trying if you have overheating problems.
I have discovered, for my 2008 S, a way to keep the water temperature at about 180-190 F. Turn on the AC AND have the fan on high. This gives be more room for heating before boiling over. It does not depend on anything else -- sport mode, highway speed, fan speed, etc. Since I did not want the AC compressor running at 6,000 rpm I just pull the AC clutch fuse when I take the car to the track.
Previously I had several cases where the car turned abruptly left or right -- rear end coming around. Since I started running with lower water temperatures this has not happened. I can only assume that the car had been overheating and blowing out some antifreeze -- making the read end slippery.
I can not speak for all years or models -- who knows when the BMW engineers change the firmware. But it is worth trying if you have overheating problems.
temp would drop. When turning the ac on, the electric radiator fans would go on.
#3
The mini monitors the load on the engine and adjusts the water temps accordingly. Keeping the water temp higher is for economy and you'll find a boatload of manufacturers doing the same thing.
The mini will drop the water temps when you really get your foot into it. And contrary to your post, at least for N18 owners, the mini does drop the water temps to 185-195 when you engage sport mode.
I highly doubt your overheating issue has anything to do with "more room for boiling over", a la correlation is not causation.
If your car is expanding past the expansion tank and evacuating coolant, causing you to have a "slippery rear end", you have other issues.
The mini will drop the water temps when you really get your foot into it. And contrary to your post, at least for N18 owners, the mini does drop the water temps to 185-195 when you engage sport mode.
I highly doubt your overheating issue has anything to do with "more room for boiling over", a la correlation is not causation.
If your car is expanding past the expansion tank and evacuating coolant, causing you to have a "slippery rear end", you have other issues.
#4
The mini monitors the load on the engine and adjusts the water temps accordingly. Keeping the water temp higher is for economy and you'll find a boatload of manufacturers doing the same thing.
The mini will drop the water temps when you really get your foot into it. And contrary to your post, at least for N18 owners, the mini does drop the water temps to 185-195 when you engage sport mode.
I highly doubt your overheating issue has anything to do with "more room for boiling over", a la correlation is not causation.
If your car is expanding past the expansion tank and evacuating coolant, causing you to have a "slippery rear end", you have other issues.
The mini will drop the water temps when you really get your foot into it. And contrary to your post, at least for N18 owners, the mini does drop the water temps to 185-195 when you engage sport mode.
I highly doubt your overheating issue has anything to do with "more room for boiling over", a la correlation is not causation.
If your car is expanding past the expansion tank and evacuating coolant, causing you to have a "slippery rear end", you have other issues.
#5
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