Grumpy666

Based on the pic and your description, I would say the covers are there to form a channel to direct air across the exhaust system, meaning the headers and cats. Removing either one could disrupt the focused flow and possibly exacerbate the heat issue. Your best alternative might be to include some scoops/baffles into the front cover to pull in more air, which will be cooler than the air passing through the radiator(s).

cte430

My car is almost always at 100. Never goes above, but gets there fairly quickly espceially on hot days. Several other people I have spoken with also are at the 100 mark pretty regularly

rflow306

That's strange , my car never gets hotter than 95 no matter what. This summer in Miami has been brutal.

machz990

My 05 E55 has 3900 miles on it and it runs 80 C on the temp guage. This may sound too basic but here is my two cents on a couple of easy things to check out. 1. Any coolant mixture greater than 50/50 mix of antifreeze to water is less effiicient. A lot of people think adding more antifreeze to the water makes it better. It actually makes it worse at removing engine heat. 2. If you use anything other than distilled water such as tap water and it has a lot of mineral content it will plug the bottom cores of your radiator almost like hardening of the arteries. I have seen radiators completely plugged using hard tap water with a high mineral content. That will reduce the efficiency of the radiator. 3. The obvious one you already mentioned would be to test the thermostat and see when it opens. It may be sticking and only partially opening. Again could be due to tap water.

vrus

I've never filled the rad so whatever came in the car when I bought it is what is there now... Maybe I should drain some and refill with higher distilled water content.

I'll give that a shot once they check my water pump and thermostat.

OZC32AMG

Hi Victor,

On the LS1 Chev engines, colder operating temperature thermostats are available to lower the engine running temp. I do not know if a range of different operating temp thermostats are available for the Mercedes engines, but if they are this would be a simple method to alter the operating temperature of your engine.

In my previous HSV's (Holden Special Vehicles) I found the best performance was obtained by using a 84 degrees Celsius thermostat.

Joe

OZC32AMG

Victor,


Did a quick search and found a 87 degree Celsius thermostat available for the E55 (pre 2003 ie; non supercharged). If one is available for your engine it doesn't cost much to try it out.

http://www.maximumautoparts.com/MB_T...001_items.html

Hope this helps,

Joe

vrus

Hey Joe,

I had a C5 vette also.. When I first got my E55, I started looking for all the little things that I did on my C5... I wasn't too surprised to find out that these simple things weren't available.

If I knew the manufacturer of the thermostat I could probably source a lower temp one, but, as it is now, I can only get the factory replacement.