[W126 Coupe] [W126 coupe] Engine Cooling System

[usef nazzal]

Hey All

i just wanted to correct some thing regarding the thermostat  and maye get
some comments

remem talking about my friend and replacing the thermostat.. well  there is
a confusion .. what he was doing was completely REMOVING the thermostat..
although that meant constant flow of coolant but it caused overheating.. his
explanation to this is that with the coolant flowing all that time the rad +
rad fan does not get a chance to cool the coolant  ... so in other words the
tstat at some point closes trapping the coolant at the rad side and thus
cooling it before releasing it into the engine... i think thats interesting
and applicable for really hot climates..

Yousef

On Thu, Mar 31, 2011 at 1:23 PM, usef nazzal <usef4188 at gmail.com> wrote:


>  Hello

>

> Thanks for the advice Dick.. my cooling system seems to work fine (wether

> is pleasent at this time of year.. 68F) Temp stays just above 80C in all

> conditions (traffic or moving). However, when i switch the AC on the temp

> goes up to 90-95C in traffic. so i recon its gonna over heat in the same

> situation in a couple of months when things heat up.. so am trying to be precautionary

> and do what i can to keep the engine cool.. i am in the proess of replacing

> the coolant and temp switch... and thanks for the clarification on the

> t-stat..i havent decided if am gonna replace it yet.. ill be doing alot of

> trials first and see how it goes maybe ill post a report on my results ..

> but itll take time till the wether reaches peak temps..

>

> Also if i want to measure the engine temp via a thermometer (infrared etc.)

> how can i get an accurate result (the right spots to measure) and what would

> be a normal temp (when you say 83C am guessing your talking about the

> coolant temp)..

>

>

> @ JAY :  hahaha if you can offer me a well paid job with no taxes and

> cheap fuel ill be on my way with my SEC right this moment ;).. besides Dubai

> is "kool" ;).. hope we'r all leading a good life...

>

> @Michael: Sounds great..i might be replacing the alternator (maybe a 200A

> GM) however being an electrical engineer i wouldnt depend soley on the

> electric fans :D.. BTW how much horsepower would the visco fan pull from the

> engine??

>

> @ the rest:  although ive been brougth up in Dubai, one thing you can NEVER

> get used to is the humidity .. and btw this might be a shocker for you

> (Michael) .. i havent touched snow yet .. am 23 .. ya never  visited a snowy

> place since i normally get my vacations in summer.. and on christmas -

> spring breaks ... the wether is amazing to you wouldnt think of leaving

>

> Yousef

>

> On Thu, Mar 31, 2011 at 8:30 AM, Ronny 560sec <ronny.geenen at verizon.net>wrote:

>

>> I love your suggestion

>>

>> Ronny

>>

>> -----Original Message----- From: Jay Hirsch Sent: Wednesday, March 30,

>> 2011 9:34 AM To: Mercedes Coupes Mailing Lists Subject: Re: [W126 Coupe]

>> [W126 coupe] Engine Cooling System

>>  Yousef,

>> Ever consider moving to a "kooler" place?

>> 113 is a little high

>> keep cruisin

>> Jay H

>> On Mar 30, 2011, at 6:39 AM, usef nazzal wrote:

>>

>> Hey All

>>>

>>> In previous mails Ive mentioned the topic regarding engine cooling  along

>>> with other topics. However, I would like to focus on Engine  cooling this

>>> time. I live in a country in which temperatures can  reach highs of 113F

>>> (most of the year) and lows of 59F (extreme  cases 41F).. I have recently

>>> bought a Euro 560SEC and i am in the  process of adjusting its cooling

>>> system in order to accomodate with  the extremely hot wether.

>>>

>>> my plan is as follows

>>>

>>> 1) change the Temperature Switch to a lower rating 80-85 C

>>>

>>> 2) Coolant: i know the recommended is 50\50 mix. However, ive heard  of

>>> owners changing to 60\40 and even 70\30 (Distilled\MB Coolant)  plus Water

>>> Wetter. I was thinking of going with 70\30 since am  gonna need more cooling

>>> than anti-freeze. Is this a good idea in my  case? I know that coolant

>>> increases the boiling point and has anti  corroding properties.

>>>

>>> 3) Thermostat: Mister McGoo (Bellamy) suggested replacing the  thermostat

>>> to a new one.. However i have a friend with some  experience with 560s

>>> suggested not to do so if its working fine   because everytime he'd replace

>>> a thermostat on his 560s he'd end up  with the engine overheating.. so i am

>>> having my doubts.. Also when  buying thermostats, are they available at

>>> different ratings? and  what would those ratings be? which one would be best

>>> for my case?

>>>

>>> probably the answer to those questions would be to try it out and  see..

>>> but i wouldnt wanna get in to more complex issues especially  with (3).

>>> Appreciate your help and suggestions.

>>>

>>> Regards

>>> Yousef

>>>

>>> --

>>> ---------------------------

>>> Yousef Nazzal

>>> ---------------------------

>>> The MB Coupes Website!

>>> W126 SEC Mailing List

>>> Postings remain property of MB Coupes, L.L.C.

>>>

>>

>> The MB Coupes Website!

>> W126 SEC Mailing List

>> Postings remain property of MB Coupes, L.L.C.

>> The MB Coupes Website!

>> W126 SEC Mailing List

>> Postings remain property of MB Coupes, L.L.C.

>>

>

>

>

> --

> ---------------------------

> Yousef Nazzal

> ---------------------------

>




-- 
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Yousef Nazzal
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