Tested and Ready 70° and 75° Thermostat

[Anri]

These are most likely the same thermostats found on dodge diesel and peterbuilt engines.
They are compatible with s65/s85.

On s54 you will have to remove the middle gasket and install the OE O-ring in the thermostat housing.

they are like 15$ a pop.

70/160 Degrees
75/170 Degrees
80/180 Degrees
90/190 Degrees

ZiMMie,

This is not my option.

I am aware of Motororad products and after
testing they are not opening as their advertised
degrees.

Regards,
Anri

[ZiMMie]

ZiMMie,

This is not my option.

I am aware of Motororad products and after
testing they are not opening as their advertised
degrees.

Regards,
Anri

You can use those number to interchange to other manufacture.. e.g. ACDelco part # is also available. Etc.
You can even buy these thermostats from Porsche as they compatible with the Carrera GT.

https://motorad.com/part/880060/#interchange

https://motorad.com/part/880070/#interchange

https://motorad.com/part/880080/#interchange

https://motorad.com/part/880090/#interchange

[Anri]

You can use those number to interchange to other manufacture.. e.g. ACDelco part # is also available. Etc.
You can even buy these thermostats from Porsche as they compatible with the Carrera GT.

https://motorad.com/part/880060/#interchange

https://motorad.com/part/880070/#interchange

https://motorad.com/part/880080/#interchange

https://motorad.com/part/880090/#interchange

ZiMMie,

Let's try again...

I am aware of the Motorad product/s from very long time.

I am NOT using single Motorad part/s in my option.

For those who wants to pay $15 a pop, go for

Regards,
Anri

[ZiMMie]

ZiMMie,

Let's try again...

I am aware of the Motorad product/s from very long time.

I am NOT using single Motorad part/s in my option.

For those who wants to pay $15 a pop, go for

Regards,
Anri

ok Arni.

[ugaexploder]

Do we have any news on the thermostats?

[Anri]

Hi,

Most T-stats are shipped. I need to ship to 3 more.

This week will ship the remaining.

Thanks,
Anri

[ac427]

Hi,

Most T-stats are shipped. I need to ship to 3 more.

This week will ship the remaining.

Thanks,
Anri

How do I get one. I did send a PM a little ago?

Anri Could you PM me.

[Anri]

How do I get one. I did send a PM a little ago?

Anri Could you PM me.

PM sent with details on the shipping to UK.

[ac427]

PM sent with details on the shipping to UK.

Apologies Anri, I had actually missed your earlier reply.

I have now replied to your PM.

[ac427]

Anri Can you please send the payment details to me, thanks.

[Mike RT4]

Gents,

I added 75° options as well for Cold states.

The 70°-75° are all tested and it works great and no Check engine Light
is triggered so no need for adjustments in the ECU.

After many tests here is the data from the OEM spec:
At 80° Opens 1mm at 80°, 83°~3mm at 85° is fully open
Completely Closed at 77° +/-1°

70°. At 70° opens 1mm at 73° ~3mm at 75° fully open
Completely closed at 66° +/-1°

75° is right in between the OEM and the 70°.

Edit: I dropped the second option..with more than
10 people everyone wants install and go.

$185 Plus shipping.


Regards,
Anri.

Hi Anri,
A bit of back-ground on my car. It is not used during the winter when there is salt on the road, so not often when the temperature is below 10°C (50°F) and is frequently used on track. Summer temps are usual 20-35°C (68-95°F). Water temps stay around 87-89°C both on track and in normal use (189-192°F) - as per iBUS data.

Engine oil temps peak at 116°C actual (241°F) - which shows as just over 3/4 on the shonky BMW gauge.

Obviously I can notice the drop in power on track on hot track days from the straighline speed / braking points, where the peak speed drops by 3-4mph, so the ignition is obviously being retarded as per your previous comments.

With this in mind, which of the thermostats do you feel would be most suitable?
Many thanks
Mike

[ac427]

Hi Anri Could you reply to my PM, thanks.

[Tonggi]

To take full advantages from the 70C Sachs Fan clutch is a Must !!!

I can supply that as well. Let me know if you need that.

Regards,
Anri

I didnt see your post and I have already purchased a 55C BMW OEM motorsport T-Stat.

I live in Florida where the car has NO issues getting Hot. I also plan to run a DO88 Rad along with my DO88 oil cooler and BW Oil Diverter Valve. I want to be able to go on 30 min sessions in Sebring and not worry about the car getting hot.

Would you recommend I keep the 55C and do this 70C Sachs Fan clutch versus electric or get your 70C tstat and the fan clutch? I will see if I can return my 55 TSTAT before anything else

[ac427]

What is the Sachs part number for the 70⁰C fan clutch?

[bmwfnatic]

What is the Sachs part number for the 70⁰C fan clutch?

Sachs 2100 011 031

Unfortunatley it is NLA from Sachs since recently, but there are plenty still floating around Ebay and in stock at some retailers.

But it seems Sachs didn't manufacture these, they are simply repackaging them.

If you look on the images on rockauto for the BMW number 11527505302 you can see that there are several brands repackaging something similar to Sachs. Same part number on the little plate in the middle...