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      11-03-2023, 02:40 PM   #1
eeyang92
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Stock Coolant Target?

Hi,

Can anyone confirm (via bimmerlink or datalogs) what their N55 M2's coolant target is? I believe it is 80C (as shown in my old datalogs prior to blowing my engine and getting it swapped from another N55 M2) but my shop keeps saying it should be 100C. My fan and waterpump are running at 100% duty cycle constantly but for some reason it won't go below 100C post-engine swap.

I believe non-M2 N55's do in fact target 100C, but as far as I can remember, my coolant was always pegged to 80C (with oil slightly above that).

TIA!
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      11-03-2023, 02:52 PM   #2
F87source
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Quote:
Originally Posted by eeyang92 View Post
Hi,

Can anyone confirm (via bimmerlink or datalogs) what their N55 M2's coolant target is? I believe it is 80C (as shown in my old datalogs prior to blowing my engine and getting it swapped from another N55 M2) but my shop keeps saying it should be 100C. My fan and waterpump are running at 100% duty cycle constantly but for some reason it won't go below 100C post-engine swap.

I believe non-M2 N55's do in fact target 100C, but as far as I can remember, my coolant was always pegged to 80C (with oil slightly above that).

TIA!
It depends on operating mode and ambient temps. If ambient temps are high enough sport+ always targets ~80C comfort mode is close to 100c.

I have the dme tables showing temp targets:

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      11-03-2023, 05:14 PM   #3
eeyang92
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Quote:
Originally Posted by F87source View Post
It depends on operating mode and ambient temps. If ambient temps are high enough sport+ always targets ~80C comfort mode is close to 100c.

I have the dme tables showing temp targets:

Appreciate it! And yes, I did mean in sport/sport+ mode.
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