DIY: CL65 Rear Trunk Reservoir
Thread Starter
MBWorld Fanatic!
Joined: Mar 2004
Posts: 5,768
Likes: 5
From: South FL & NYC
Your worst nightmare...
DIY: CL65 Rear Trunk Reservoir
I installed my rear trunk tank reservoir over the weekend. Car feels way more responsive and its amazing what IAT's will do to these V12's. I also switched pumps to a Meziere pump and jumped it so it's on at all times. I will put up pictures but see the schematic for a summary of what I did. If I did something wrong please feel free to correct me. Thx
Remember the idea is for the IC's to get the first shot at the Iced Water.
Remember the idea is for the IC's to get the first shot at the Iced Water.
Last edited by V12Godspeed; Aug 18, 2014 at 02:39 PM.
MBWorld Fanatic!
Joined: Nov 2010
Posts: 2,605
Likes: 343
From: Welwyn, Herts, UK
2006 S600
I think running the pump all the time is a big win, as long as it doesn't cavitate. You don't have to wait for the IC system to START cooling when you give it the gas. It also keeps the temps as low as possible, rather than sufficiently low.
The picture is for the Maybach: do you have your pump betweeen the HE and the trunk tank?
Nick
The picture is for the Maybach: do you have your pump betweeen the HE and the trunk tank?
Nick
Last edited by Welwynnick; Aug 18, 2014 at 04:44 PM.
Thread Starter
MBWorld Fanatic!
Joined: Mar 2004
Posts: 5,768
Likes: 5
From: South FL & NYC
Your worst nightmare...
Yes, this is the maybach one. Couldnt find one for the 65. My pump is in stock location. I nipped the hose at the end of the Heat exchanger, same thing as the picture above only opposite.
MBWorld Fanatic!
Joined: Jan 2011
Posts: 1,181
Likes: 59
CL65
Hey, every bit helps when summer is here, glad it hasn't been as hot as the summers of the past. Are you still running stock intercoolers or did you swap them out at the same time? I know you have a few other things going on right now, but did any other mods make it on the car yet? Enjoy!!
Thread Starter
MBWorld Fanatic!
Joined: Mar 2004
Posts: 5,768
Likes: 5
From: South FL & NYC
Your worst nightmare...
Hahah, I have an arsenal just sitting in my garage. I made the appointment to swap turbos around middle of Sept. I moved to FL and the heat is brutal. Car was sluggish so I decided to just give it better cooling. I will soon install the IC's and everything else. 
Trending Topics
Junior Member
Joined: Apr 2012
Posts: 70
Likes: 3
From: Flower Mount TX
2005 cl65 AMG, 2014 e63s AMG
OK,
I have a "dumb" (or two)...
1) Do you run ice in these tanks?
2) If so how long does it last?
3) Do you have to remove fluid before adding ice?
4) With all of this going on in your trunk does it make a mess?
Thanks in advance for the information.
-LeoD
I have a "dumb" (or two)...
1) Do you run ice in these tanks?
2) If so how long does it last?
3) Do you have to remove fluid before adding ice?
4) With all of this going on in your trunk does it make a mess?
Thanks in advance for the information.
-LeoD
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Thread Starter
MBWorld Fanatic!
Joined: Mar 2004
Posts: 5,768
Likes: 5
From: South FL & NYC
Your worst nightmare...
2- it lasts about one run down the 1/4 strip
3- yes, have to dump the hot water after the run and refill to cool off, and then one last time to preserve the Cold temps before another blast.
4- No mess if you know how to do it neatly, its only water.
Now, I do not have the need for Ice anymore since I bought a Kincaid killer chiller. It's like having Ice 24/7 365 days a year. Specially in Florida where you use AC every day, every night. Hope that helps.
Former Vendor of MBWorld
iTrader: (1)
Joined: May 2008
Posts: 12,139
Likes: 295
From: Houston
2003 W211 E55, 2003 W220 S600
Thread Starter
MBWorld Fanatic!
Joined: Mar 2004
Posts: 5,768
Likes: 5
From: South FL & NYC
Your worst nightmare...
What I do for that is remove the rubber ring on the rear tank so air has the chance of escaping. Just not fond of leaving something open in the engine bay even if its water. Thanks!
Thread Starter
MBWorld Fanatic!
Joined: Mar 2004
Posts: 5,768
Likes: 5
From: South FL & NYC
Your worst nightmare...
MBWorld Fanatic!
Joined: Nov 2010
Posts: 2,605
Likes: 343
From: Welwyn, Herts, UK
2006 S600
The additional plumbing to the tank mustn't take an appreciable down turn anywhere, otherwise it will create a partial air lock.
All the W215/W220 heat exchangers have major built-in air locks that can only be bleed using a vacuum filler
Although you can bleed the intercooler intlets using the fill valves (with difficulty), the outlets still have air locks.
Its a terrible system. I use an engine radiator HE that bleeds from the top, and a swirl pot / header that bleeds from the IC inlets.
I think the only alternative is a proper vacuum filler(and I don't include the MB filler when I say "proper" - I mean real vacuum, like an AC vac pump.)
Nick
Former Vendor of MBWorld
iTrader: (1)
Joined: May 2008
Posts: 12,139
Likes: 295
From: Houston
2003 W211 E55, 2003 W220 S600
on my 2 x front mount heat exchanger setup I have to take it to a MB tech to vacuum bleed it each time I work on it. I tried all the coke bottle etc etc ways but that never worked for me
MBWorld Fanatic!
Joined: Aug 2013
Posts: 1,077
Likes: 80
From: Anchorage
05 CL65
I've been thinking about buying a vacuum bleeder like this so I can do it myself.
Given the quality of work done on my car before I got it I would bet there is air in my system already and when I add the Killer Chiller this winter I'll need to bleed it anyway. I figure it is cheaper to buy the tool than pay the dealership to do it twice.
Given the quality of work done on my car before I got it I would bet there is air in my system already and when I add the Killer Chiller this winter I'll need to bleed it anyway. I figure it is cheaper to buy the tool than pay the dealership to do it twice.
Last edited by Dr Matt; Aug 19, 2014 at 07:11 PM.
MBWorld Fanatic!
Joined: Nov 2010
Posts: 2,605
Likes: 343
From: Welwyn, Herts, UK
2006 S600
I've been thinking about buying a vacuum bleeder like this so I can do it myself.
Amazon.com: UView 550000 Airlift Cooling System Leak Checker and Airlock Purge Tool Kit: Automotive
Amazon.com: UView 550000 Airlift Cooling System Leak Checker and Airlock Purge Tool Kit: Automotive
To get all the air out of the secondary cooling system, you really need about 99% vacuum. Positive displacement pumps don't really go that high, so that leaves single stage rotary vane vacuum pumps - the oil filled type, like AC pumps. They go down to a few Pascals, and the popular Chinese ones cost under $100.
Like a lot of established electrical, pneumatic and hydraulic technologies, they're problems that were solved long ago, and are now commodities. No need for expensive solutions. I hope to have a few other easy solutions to our other problems soon.
Anyhow, I'd say give it a go; Mercedes may know something that I don't.
Nick
MBWorld Fanatic!
Joined: Aug 2013
Posts: 1,077
Likes: 80
From: Anchorage
05 CL65
Looking at the design of the intercooling system, my biggest concern about air is the front heat exchanger. Since the inlet & outlet are both on the bottom, there is absolutely no way to get all the air out of it without a vacuum fill system. I believe you might get all the air out of the intercoolers by running the system for a while, but the whole system is flawed for self bleeding due to the heat exchanger outlet location.
If I ever have reason to pull the front of my car apart I'll be looking into adding a bleeder valve at the top outlet side or having the outlet relocated to the top of the H/E by a local radiator shop. I might just do it this winter anyway when I add my Killer Chiller since I'll be draining the system anyway. Probably cost less than buying a tool and from then on it could easily be bled by just running the pump.
In also supect the reason people see a big improvement when they add a second H/E is that most aftermarket H/E's are self bleeding (outlet on top of outlet side tank) so that even if they have a useless stock H/E because it is 1/2 or more full of air, the secondary added one is actually working properly.
If I ever have reason to pull the front of my car apart I'll be looking into adding a bleeder valve at the top outlet side or having the outlet relocated to the top of the H/E by a local radiator shop. I might just do it this winter anyway when I add my Killer Chiller since I'll be draining the system anyway. Probably cost less than buying a tool and from then on it could easily be bled by just running the pump.
In also supect the reason people see a big improvement when they add a second H/E is that most aftermarket H/E's are self bleeding (outlet on top of outlet side tank) so that even if they have a useless stock H/E because it is 1/2 or more full of air, the secondary added one is actually working properly.
Last edited by Dr Matt; Aug 19, 2014 at 07:17 PM.
MBWorld Fanatic!
Joined: Nov 2010
Posts: 2,605
Likes: 343
From: Welwyn, Herts, UK
2006 S600
There's a lot of issues there.
I learned a lot about pumps and cooling systems in the last year or so (see sig).
Cooling systems have been developed over a hunderd years, its a problem that's been solved.
However, Mercedes seem to have forgotten all about it with the V12TT, and treated it as a special case, which is very unfortunate.
There are some long-established golden rules for installing (centrifugal) pumps, including:
But yes, people often see an improvement in the performance of their IC system simply because its been bled properly, rather than because of the modifications they've done. I can't think of any other reason for the popularity of marine circulation pumps and engine cooling pumps.
Regards, Nick
I learned a lot about pumps and cooling systems in the last year or so (see sig).
Cooling systems have been developed over a hunderd years, its a problem that's been solved.
However, Mercedes seem to have forgotten all about it with the V12TT, and treated it as a special case, which is very unfortunate.
There are some long-established golden rules for installing (centrifugal) pumps, including:
- The pump inlet pressure should be as high as possible.
- Therefore the pump should be located at the lowest point in the system.
- Locate the pump after the radiator, to keep it as cool as possible.
- Mount the pump horizontally, to minimise bearing end loads.
- To avoid air locks, the outlet should be at the top of the pump, and must not point down.
- The pump's pressure/flow characteristics should be matched to the system resistance curve to achieve best performance.
- Don't run a pump into an excessively high or low resistance, or it will fail quickly.
- Keep air and contaminants out of the system.
- Finally - feed the pump from the BOTTOM of the radiator, to minimise air ingestion.
But yes, people often see an improvement in the performance of their IC system simply because its been bled properly, rather than because of the modifications they've done. I can't think of any other reason for the popularity of marine circulation pumps and engine cooling pumps.
Regards, Nick
Thread Starter
MBWorld Fanatic!
Joined: Mar 2004
Posts: 5,768
Likes: 5
From: South FL & NYC
Your worst nightmare...
+1 Sure is!
I datalogged my car a few weeks back in stop and go traffic and temperature did not go any lower than 156, highest was 172 in this 85 Degree weather. Once I install the killer chiller we will see where they end. Anything above 130 and you are toast when it comes to power.
I datalogged my car a few weeks back in stop and go traffic and temperature did not go any lower than 156, highest was 172 in this 85 Degree weather. Once I install the killer chiller we will see where they end. Anything above 130 and you are toast when it comes to power.
Senior Member
Joined: May 2007
Posts: 276
Likes: 30
From: United Kingdom
CLK56TT (WIP), S65, RR 5.0 S/C
Would be interested in seeing your results. Found KC to be not as effective when paired with Weistec blower and rear tank.
