W211 AMG Discuss the W211 AMG's such as the E55 and the E63

Coolant Temperatures ?

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Old Oct 27, 2008 | 09:12 AM
  #1  
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Coolant Temperatures ?

What do your coolant temperature normally run at on the water temp guage? Mine have been getting to the 100 mark in the city lately - not sure why. On the highway they are down around 85.

Suggestions?
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Old Oct 27, 2008 | 10:39 AM
  #2  
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CWW
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Originally Posted by prodigymb
What do your coolant temperature normally run at on the water temp guage? Mine have been getting to the 100 mark in the city lately - not sure why. On the highway they are down around 85.

Suggestions?
Typical Benz behavior.

Others will argue with me, but with all of the ones I've owned, new and old, I've noticed you only get maybe 7 "good" years out of the OEM benz radiator and fan clutch. After that, the temps will start rising to the 100c mark.

I pretty much consider the radiator and fan clutch to be routine maintenance items. Change these two things and your temps will be back down to normal.
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Old Oct 27, 2008 | 10:41 AM
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Originally Posted by CWW
Typical Benz behavior.

Others will argue with me, but with all of the ones I've owned, new and old, I've noticed you only get maybe 7 "good" years out of the OEM benz radiator and fan clutch. After that, the temps will start rising to the 100c mark.

I pretty much consider the radiator and fan clutch to be routine maintenance items. Change these two things and your temps will be back down to normal.

thanks for your input.

can anyone second that before i pull the trigger on radiator?
whould i look into a PTE thermostat?

Last edited by prodigymb; Oct 27, 2008 at 11:20 AM.
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Old Oct 27, 2008 | 10:51 AM
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The fan is electric for one.

Mine stayed at 100 almost contantly since I bought in June until I replaced the intercooler pump now it is at 90 constant.
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Old Oct 27, 2008 | 10:56 AM
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Originally Posted by 03e55
The fan is electric for one.

Mine stayed at 100 almost contantly since I bought in June until I replaced the intercooler pump now it is at 90 constant.
yeah i replaced my HE pump with CM30 last week and it was great. stayed around 85-90 and it just stared going to a 100 yesterday and only when the car is sitting or going slow. on the highway temps are low.
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Old Oct 27, 2008 | 11:18 AM
  #6  
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Originally Posted by 03e55
The fan is electric for one.

Mine stayed at 100 almost contantly since I bought in June until I replaced the intercooler pump now it is at 90 constant.
Just realized you're right. Technology marches on.
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Old Oct 27, 2008 | 11:29 AM
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I'd wait and see since it may just be the weather? Mine sat at 80 ALL the time when we just put in the added HE and big pump. It is back to 90 now that the big pump is separate.
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Old Oct 27, 2008 | 11:50 AM
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Originally Posted by jangy
I'd wait and see since it may just be the weather? Mine sat at 80 ALL the time when we just put in the added HE and big pump. It is back to 90 now that the big pump is separate.
Its 50* outside in Philly now. . .

I ordered the C3 heat exchanger, hopefully it will get here by the weekend. It seemed like mine sat 1 line above 80 after the pump install and now it's being weird....

Should I separate the circuits?
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Old Oct 27, 2008 | 04:57 PM
  #9  
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bumppp
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Old Oct 27, 2008 | 07:14 PM
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90 to 100c
or around 200F


The only way to bring down coolant temp is through modified T stat and let the fan start sooner.

The lowest you can drop is around 160 or so.. so a modified T-stat of 180 probably the way to go.

don't mix the HE and Pump with your radiator and fan.. 2 very different systems that share 1 reservoir.

-------
When we add a bigger HE and better pump, we essentially only solve 1/2 the problem.. since we are not addressing the main problem.. engine coolant temp.

even adding Water Wetter, more vents, taking the engine cover, heat rap, ect.. will not help.. since the engine will still warm up the water to the set temp.
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Old Oct 27, 2008 | 10:25 PM
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Originally Posted by prodigymb
Its 50* outside in Philly now. . .

I ordered the C3 heat exchanger, hopefully it will get here by the weekend. It seemed like mine sat 1 line above 80 after the pump install and now it's being weird....

Should I separate the circuits?

If you plan to mod, yes. Even if not, cooling is the best mod to give top end.
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Old Oct 28, 2008 | 08:45 AM
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Originally Posted by jangy
If you plan to mod, yes. Even if not, cooling is the best mod to give top end.
this should answer whether i will mod or not question . . .


power difference when i got vs when i sold it

yeah i'm gonna mod. i already did evospsort phenolic spacers, k&n air filters, secondary cats removed and my Code3 heat exchanger should be here any day. before i get pulley and tune i want to see what i can get out of it on stock boost level and stock ecu and make sure the car is running well.

Last edited by prodigymb; Oct 28, 2008 at 08:52 AM.
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Old Oct 28, 2008 | 10:31 AM
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Get cooling and separate the systems. Make a custom setup. it will be cheap, fun, and effective.
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Old Oct 28, 2008 | 11:34 AM
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Originally Posted by jangy
Get cooling and separate the systems. Make a custom setup. it will be cheap, fun, and effective.
i got the pump and the heat exchanger already. what else do i need to split the circuits? heater hose and a reservoir?

any ideas on my rising coolant temps while slow driving? i am going to try bleeding the coolant again.
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Old Oct 28, 2008 | 12:25 PM
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PM'd you, but getting hot while sitting in traffic is normal to some extent. Since you plan to upgrade, do that and if parts fail replace them.
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Old Oct 28, 2008 | 03:04 PM
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Originally Posted by jangy
Get cooling and separate the systems. Make a custom setup. it will be cheap, fun, and effective.
Jangy,

Are you insinuating to just buy a bigger HE and then additionally just buy a reservoir and a few hose lines which would = a custom setup.

I'm still waiting for VRP to release pricing on their new and improved set-up. Have you been data logging and if so, is your car recovering well at WOT and how high are your IAT getting at WOT compared to an stock or old setup.

thx
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Old Dec 13, 2008 | 11:59 AM
  #17  
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I just got the code 3 exchanger Johnson cm30 and will be getting the -10mod. Now should I seperate the system and is there a how to on this? Also do you reccomend the 160tstat and how much are these?
Justin

Last edited by JBFMCAR; Dec 13, 2008 at 12:03 PM.
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Old Dec 13, 2008 | 12:16 PM
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Originally Posted by JBFMCAR
...Now should I seperate the system and is there a how to on this?...
yes to both...https://mbworld.org/forums/w211-amg/...nger-prep.html
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Old Dec 13, 2008 | 03:11 PM
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Originally Posted by Roseylv
Jangy,

Are you insinuating to just buy a bigger HE and then additionally just buy a reservoir and a few hose lines which would = a custom setup.
Almost. I am saying that you can keep your current HE and add a piece on to increase HE. Once you split systems, you will need to add a reservoir for the SC coolant. I found a 1.5 gallon one that fits on top of the aluminum bumper but you can honestly use anything. I know many use a spare power steering fluid reservoir but I need the added capacity. Finally, add the daddy Davies pump that I love and how is it not a custom setup?

I'm still waiting for VRP to release pricing on their new and improved set-up. Have you been data logging and if so, is your car recovering well at WOT and how high are your IAT getting at WOT compared to an stock or old setup.

thx
Mine can't be new or improved, so I assume it is not what VRP would sell. But the recovery was the most noticed. Before, I would peak at about 160 and it would stay there pretty steadily. After the VRP cooling kit, the peak dropped by 20 - 40 degrees and recovered VERY fast. My focus now is on the peak. I took the airbox out last week and just that has helped by another 10 degrees. I assume it is because the heat can escape better from the manifold and engine top now, so i will go ahead with my experiment to see if I can lay something inline accross the top to help pull the heat.
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