track temperature issues - Page 2

billyboysm3 · 17-09-2016, 07:46 PM

I've got mishimoto rad and fan on the M3 and it cold do lap after lap and not go near halfway.

Outperforms oem.

**shimmy** · 17-09-2016, 09:36 PM

Quote:

Originally Posted by billyboysm3

I've got mishimoto rad and fan on the M3 and it cold do lap after lap and not go near halfway.

Outperforms oem.

Have you got a/c and a/c rad?

Jon8710 · 17-09-2016, 10:09 PM

Want to keep it OEM looking as possible really.

khooni · 19-09-2016, 11:49 PM

i removed ac and ac rad but kept the ac fan which switches on after a certain temperature. works a charm.

**shimmy** · 20-09-2016, 12:13 AM

Quote:

Originally Posted by khooni

i removed ac and ac rad but kept the ac fan which switches on after a certain temperature. works a charm.

What are the on/off parameters of the AC fan then?

**shimmy** · 20-09-2016, 12:19 AM

Just remembered, from AlexK

shimmy, I could be wrong but I think the electric fan is also installed on the non-AC cars.

The fan is used to provide additional cooling to the engine. It's not used just for the AC.

Here are the maps that show how the fan is operated.

Temperature (°C)|Operation/speed (%)
|49°C|0%
|50°C|30%
|70°C|40%
|80°C|65%
|85°C|83%
|90°C|100%

The second map, that changes the voltage supply depending on the speed.
Above 140km/h it's deactivated.

speed (km/h)|Voltage (index)
|0 km/h|1
|50 km/h|1
|100 km/h|1
|120 km/h|0.5
|140 km/h|0
|200 km/h|0

khooni · 20-09-2016, 11:07 PM

I could have sworn someone said that non AC cars didn't have the AC fan....

anyway wks for the parameters Shimmy. I didn't know it would turn off at 140km/h.........

**shimmy** · 20-09-2016, 11:20 PM

Quote:

Originally Posted by khooni

I could have sworn someone said that non AC cars didn't have the AC fan....

anyway wks for the parameters Shimmy. I didn't know it would turn off at 140km/h.........

I'd be surprised if it's there too on non AC cars as I'm sure e92 m3 was first to have electric fan as standard

Either way it turns off at 87.5mph

**alexk** · 21-09-2016, 06:18 AM

Non AC cars do not have a fan.
The fan is restricting the airflow, that's why I removed mine.

**Mike R** · 21-09-2016, 09:15 AM

Quote:

Originally Posted by alexk

Non AC cars do not have a fan.
The fan is restricting the airflow, that's why I removed mine.

Alex,
Is it a significant weight saving as well

?

17-09-2016, 10:09 PM	#13
Jon8710 S5, Sport Off, DSC M-track Join Date: May 2012 Location: london Posts: 563 Casino cash: $8371	Want to keep it OEM looking as possible really. __________________ 1979 E24 635csi , 730d work horse , Porsche GT4

20-09-2016, 12:19 AM	#16
shimmy CSL Register Uber-poster! Join Date: Apr 2008 Location: Uk Posts: 14,646 Casino cash: $43909	Just remembered, from AlexK shimmy, I could be wrong but I think the electric fan is also installed on the non-AC cars. The fan is used to provide additional cooling to the engine. It's not used just for the AC. Here are the maps that show how the fan is operated. Temperature (°C)\|Operation/speed (%) \|49°C\|0% \|50°C\|30% \|70°C\|40% \|80°C\|65% \|85°C\|83% \|90°C\|100% The second map, that changes the voltage supply depending on the speed. Above 140km/h it's deactivated. speed (km/h)\|Voltage (index) \|0 km/h\|1 \|50 km/h\|1 \|100 km/h\|1 \|120 km/h\|0.5 \|140 km/h\|0 \|200 km/h\|0 __________________ .

21-09-2016, 06:18 AM	#19
alexk Driving it like I nicked it Join Date: Mar 2009 Posts: 2,784 Casino cash: $29969	Non AC cars do not have a fan. The fan is restricting the airflow, that's why I removed mine. __________________ www.clubcsl.com - I am a BMW Motorsport fan ! My youtube channel is here

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17-09-2016, 07:46 PM	#11
billyboysm3 CSL Register Uber-poster! Join Date: May 2011 Posts: 3,001 Casino cash: $25206	I've got mishimoto rad and fan on the M3 and it cold do lap after lap and not go near halfway. Outperforms oem.

19-09-2016, 11:49 PM	#14
khooni S5 - Full Throttle Join Date: Aug 2012 Location: east london Posts: 309 Casino cash: $3592	i removed ac and ac rad but kept the ac fan which switches on after a certain temperature. works a charm.

20-09-2016, 11:07 PM	#17
khooni S5 - Full Throttle Join Date: Aug 2012 Location: east london Posts: 309 Casino cash: $3592	I could have sworn someone said that non AC cars didn't have the AC fan.... anyway wks for the parameters Shimmy. I didn't know it would turn off at 140km/h.........