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

IAT's (Shardul; Brooke) guys that run race gas

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Old Nov 22, 2011 | 11:17 AM
  #1  
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IAT's (Shardul; Brooke) guys that run race gas

On my runs this weekend, ambient was 70*and in stagging, I got to 93*, during my dragging it got to 140*

By the time I got to the hut for the slip, it was back down to 93* You think it could be due to the race gas, does that burn hotter than pump?

Also, another thing I added was water wetter, has anyone heard negative feedback on that stuff. It did not help, so i am thinking of draining it out and running 100% water.
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Old Nov 22, 2011 | 11:19 AM
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23* over ambient then 140 during the race sounds about normal craig
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Old Nov 22, 2011 | 11:20 AM
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IAT will not be affected by choice of gas. Now AFRs, they can and will be affected.
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Old Nov 22, 2011 | 11:21 AM
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what cooling setup are you running?
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Old Nov 22, 2011 | 11:22 AM
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Craig you have the fastest car in the forums to run 11.0 in 70 deg weather.You will destroy 10.7 in 40 deg weather.

I dont even think locos car hit over 100 deg iats on his record runs with his meth setup and cold drag day.

Dont worry about it and just wait for a cooler day to hit the track again
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Old Nov 22, 2011 | 11:32 AM
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Originally Posted by skratch77
Craig you have the fastest car in the forums to run 11.0 in 70 deg weather.You will destroy 10.7 in 40 deg weather.

I dont even think locos car hit over 100 deg iats on his record runs with his meth setup and cold drag day.

Dont worry about it and just wait for a cooler day to hit the track again

Can't help but think that might be directed at me. It was 62* when we made a 10.7 pass.
Craig's car will definitely be well into the 10's soon. But until then, if you don''t have the slip...would of, could of, should of...don't mean jack!
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Old Nov 22, 2011 | 11:38 AM
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Originally Posted by shardul
what cooling setup are you running?
5 gallon capacity (including tubing) tank>meziere pump in rear>tubing to front meziere pump>heat exchanger> blower/intercooler>back to rear trunk mount.

I also have an aftermakret intercooler with larger side fin cores and ports. I would hardly say that IAT's in the 140 range is good during runs. That pulls way to much timing. Two of my mustang bro's ran my car this weekend, and they said the car dropped off big time on the back end of the track. To us guys we would not think that since a 128mph trap seems to be stout, but the mustang boys are running 9 second street cars that look stock and are near full weight. Their sense of my car pulling timing was major, but honestly, I did not feel it at all. That platform is light years ahead of ours with larger more effecient blowers and intercoolers, so it really jumped out at them when they drove my car.

I am looking at tweaking my setup to getting the IAT's below 100* during WOT runs. That would make for a consistent happy beast, not waiting for the absolute perfect weather conditions A consistent car should be able to run quick times, whether it is 40* out, or 90* out in my book.

Last edited by chawkins2001; Nov 22, 2011 at 11:46 AM.
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Old Nov 22, 2011 | 11:43 AM
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Originally Posted by lowprofile
Can't help but think that might be directed at me. It was 62* when we made a 10.7 pass.
Craig's car will definitely be well into the 10's soon. But until then, if you don''t have the slip...would of, could of, should of...don't mean jack!
it wasnt
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Old Nov 22, 2011 | 11:46 AM
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use the following flow pattern you want the ice cold water from the tank to go directly the the ic under the blower.

intank pump>front mezeire>blower>front h/e back to tank
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Old Nov 22, 2011 | 11:48 AM
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Originally Posted by shardul
use the following flow pattern you want the ice cold water from the tank to go directly the the ic under the blower.

intank pump>front mezeire>blower>front h/e back to tank
My mistake, I am 99% sure that is my flow pattern but I will check on that.
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Old Nov 22, 2011 | 12:06 PM
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Originally Posted by chawkins2001
5 gallon capacity (including tubing) tank>meziere pump in rear>tubing to front meziere pump>heat exchanger> blower/intercooler>back to rear trunk mount.

I also have an aftermakret intercooler with larger side fin cores and ports. I would hardly say that IAT's in the 140 range is good during runs. That pulls way to much timing. Two of my mustang bro's ran my car this weekend, and they said the car dropped off big time on the back end of the track. To us guys we would not think that since a 128mph trap seems to be stout, but the mustang boys are running 9 second street cars that look stock and are near full weight. Their sense of my car pulling timing was major, but honestly, I did not feel it at all. That platform is light years ahead of ours with larger more effecient blowers and intercoolers, so it really jumped out at them when they drove my car.

I am looking at tweaking my setup to getting the IAT's below 100* during WOT runs. That would make for a consistent happy beast, not waiting for the absolute perfect weather conditions A consistent car should be able to run quick times, whether it is 40* out, or 90* out in my book.
I would shy away from cross comparing platforms. None of the Mustang crowd are running 2:65 gears to start with, as well there are other restrictions we have which they are not dealing with.
Your traps are very strong. Compared to the majority of 55K, you are definitely doing something right. What are using to log your data? Are you logging your AFRs? I ask about the AFRs because when she starts pulling timing she will also add more fuel which will cause your AFR to drop off.
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Old Nov 22, 2011 | 12:43 PM
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One thing to check on as well which I learned makes a BIG difference is getting as much flow through the intercooler as possible. Theoretically we need 10-12 GPM to handle the kind of power you are making. When I tested with a bosch pump, I got 3 GPM. The meziere setup should be better but there are alot of kinks in the system that can be smoothed out to get the water flowing.

I remember Brooke talking about this in one of his threads.
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Old Nov 22, 2011 | 12:50 PM
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i just did a whole bunch of testing with my rear tank set up and found the best way to run it is from the ice box directly to the intercooler then heat exchanger and back to the tank. I had problems with my setup and bought a second pump looking for more flow but found the heat exchanger was clogged. After putting a new heat exchanger on and running 2 pumps the iat's would hit 130-160 on 1/4 mile run so i took the 2nd pump off and now they maxed out at 133 on a run from 0-130. My guess is possibly too much flow dosent allow proper cooling
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Old Nov 22, 2011 | 12:52 PM
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the meziere pumps are rated at 20gpm
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Old Nov 22, 2011 | 01:46 PM
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Originally Posted by chawkins2001
On my runs this weekend, ambient was 70*and in stagging, I got to 93*, during my dragging it got to 140*

By the time I got to the hut for the slip, it was back down to 93* You think it could be due to the race gas, does that burn hotter than pump?

Also, another thing I added was water wetter, has anyone heard negative feedback on that stuff. It did not help, so i am thinking of draining it out and running 100% water.
Nah Wat Wet is fine. I ran it all the time but we have COLD winters up here so I ended up stressing out as the freeze season set in (wondering when to drain the system and go all coolant). You start going out at all times to check on the water to make sure it is okay. Woke up in the AM one night and for some reason threw on a coat to check on it....it was beginning to freeze....all slushy. That was it. Running Benz coolant in the system ever since.

My biggest concern has always been OVERFLOW of these super pumps. My car seems to go volcanic before the 1/4 ends, then cools down quickly. Always wonder if my twin Johnson 90s are overflowing the system.
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Old Nov 22, 2011 | 01:53 PM
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There was lots of a/f logigng during tuning off course BK, but we did not log this past weekend.
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Old Nov 22, 2011 | 02:09 PM
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Typically, a race tune will give more timing, and the timing (i believe) can make the whole combustion process create more heat. Regardless, your IATs seem inline with what I have seen. With just an aftermarket HE and pump, I have seen AITs above 160. You are only seeing 130-140, so i would attribute that to dual pumps and trunk tank.

This is a WOT run from 60 to 130.. about 8 seconds, and as you can see, AIT's are in check. Ambient was 74 degrees.... 50/50 Meth (#10 nozzle)

I know there has been threads for and against, but I lose time with meth turn off. I go about .3 leaner.. but heat kills the run. I could tune out the .3, but I don't. Better safe that sorry.



Last edited by Bramage; Nov 22, 2011 at 02:27 PM.
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Old Nov 22, 2011 | 02:31 PM
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Originally Posted by shardul
use the following flow pattern you want the ice cold water from the tank to go directly the the ic under the blower.
intank pump>front mezeire>blower>front h/e back to tank
this

Originally Posted by e55amgrocket
i just did a whole bunch of testing with my rear tank set up and found the best way to run it is from the ice box directly to the intercooler then heat exchanger and back to the tank.
& this FTW
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Old Nov 22, 2011 | 03:50 PM
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Race gas will alow more timing (if car is pulling it) and depending on type of race gas, the Stoich is lower and will run leaner. Leaner and more timing , can increasde heat.

Yes, MUST run cold line direct to Supercharger. 140 is hot for running ice at the track. Stay at 120 or under, is what I see. I would sell the rear Mez and put an intank rule 2000 pump in. The rear Mez is not effecient at pulling water from a tank but the Rule 2000 is very good at it. You need a rear pump that can push large volumes of water to the front Mez and then your flow will go up and IAT`s down!
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Old Nov 22, 2011 | 03:56 PM
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My rear tank will not allow for a bilge 2000 pump, dimensions are off and it is too small. I am going to talk to shardul about his tank dimensions. That is a good idea.
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Old Nov 22, 2011 | 06:20 PM
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Originally Posted by chawkins2001
5 gallon capacity (including tubing) tank>meziere pump in rear>tubing to front meziere pump>heat exchanger> blower/intercooler>back to rear trunk mount.

I also have an aftermakret intercooler with larger side fin cores and ports. I would hardly say that IAT's in the 140 range is good during runs. That pulls way to much timing. Two of my mustang bro's ran my car this weekend, and they said the car dropped off big time on the back end of the track. To us guys we would not think that since a 128mph trap seems to be stout, but the mustang boys are running 9 second street cars that look stock and are near full weight. Their sense of my car pulling timing was major, but honestly, I did not feel it at all. That platform is light years ahead of ours with larger more effecient blowers and intercoolers, so it really jumped out at them when they drove my car.

I am looking at tweaking my setup to getting the IAT's below 100* during WOT runs. That would make for a consistent happy beast, not waiting for the absolute perfect weather conditions A consistent car should be able to run quick times, whether it is 40* out, or 90* out in my book.
Your HE is adding heat to the chilled water. Use the HE to pre-cool the water returning to the tank.
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Old Nov 22, 2011 | 08:03 PM
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Originally Posted by e55amgrocket
so i took the 2nd pump off and now they maxed out at 133 on a run from 0-130. My guess is possibly too much flow dosent allow proper cooling
Now, that is interesting.... I might take out my front johnson and leave the bac k meizer pump and see if this is true.
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Old Nov 22, 2011 | 11:36 PM
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Originally Posted by chawkins2001
On my runs this weekend, ambient was 70*and in stagging, I got to 93*, during my dragging it got to 140*

By the time I got to the hut for the slip, it was back down to 93* You think it could be due to the race gas, does that burn hotter than pump?

Also, another thing I added was water wetter, has anyone heard negative feedback on that stuff. It did not help, so i am thinking of draining it out and running 100% water.
Are you telling me that you didn't use any ice in your reservoir? If so, you deserve to not have that 10's pass.
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Old Nov 23, 2011 | 06:15 AM
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Get your pantys out of a wad homey, ice was packed but sitting in the lanes for a solid 10-15 minutes killed any coolness and my temps jumped back up to 93*.


QUOTE=Forrest Gump 9;4929580]Are you telling me that you didn't use any ice in your reservoir? If so, you deserve to not have that 10's pass.[/QUOTE]
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Old Nov 23, 2011 | 11:14 AM
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Originally Posted by chawkins2001
Get your pantys out of a wad homey, ice was packed but sitting in the lanes for a solid 10-15 minutes killed any coolness and my temps jumped back up to 93*.


QUOTE=Forrest Gump 9;4929580]Are you telling me that you didn't use any ice in your reservoir? If so, you deserve to not have that 10's pass.
[/QUOTE]

How big is your tank?

And yeah, I've learned that too. I try to put the ice in as late as possible.
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