2.2L L61 Performance Tech 16 valve 145 hp EcoTec with 155 lb-ft of torque

Question about dual pass endplates

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Old Mar 20, 2011 | 08:26 AM
  #26  
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there is some good info here
subd for later reading
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Old Mar 20, 2011 | 10:40 AM
  #27  
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Originally Posted by Tennpenn83
i have had mine set right after the IM pumping into the heat exchangers so that the coolest possible coolant goes into the laminovas.

if you think this has any negative bearing on pump life, i have had mine set up this way for 2 years now...

it's clear you need to take some money out of the common sense drawer
Right on, I set up several of these years ago including my own car, Josh's car is a DD w/72,000 miles on it w/ 60's and a 2.7 pulley & his car runs as cool as cucumber still. Mine on a 2.8 w/ 42's my temps never get above 125F even sitting still. I'm also running the option B tank w/ 3/4 bleeder line, setup right the pump will never see temps like it was before the mod.
By the way Tenn nice to see your still around!
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Old Mar 20, 2011 | 11:48 AM
  #28  
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Originally Posted by Tennpenn83
i have had mine set right after the IM pumping into the heat exchangers so that the coolest possible coolant goes into the laminovas.

if you think this has any negative bearing on pump life, i have had mine set up this way for 2 years now...

it's clear you need to take some money out of the common sense drawer
Apparently you need some of that common sense too. 1st of all, if you dont think keeping your pump cooler dosent have the potential to extend pump life then your crazy. 2nd, the pump does not heat up the fluid. The fluid does not run thru the whole pump motor assembly picking up heat. The fluid only touches the impeller for what maybe .5 sec? and the impeller does not get hot. Considering the bosch pumps we use fail so much, it's worth a try since there is NO advantage to running it the other way.
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Old Mar 20, 2011 | 12:24 PM
  #29  
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Not answering for Tenn...but the pump & rough edges in our systems create bubbles...which won't allow heat transfer nearly as good, thats why the pump feeds the heat exchanger.. which feeds the bleeder line to remove the air right after the pump. If the bubbles flow thru the heatexchangers 1st, it doesn't allow the coolant to properly tranfer the heat. Yes our system create bubbles due to all the rough edges and pump impeller, the more you remove them.. the better the system works.

If you did it the other way the pump would see the same kind of temps due to bad Heat transfer thru the H/E, another words the sooner you get rid of the bubbles the cooler the coolant will get while going thru the H/E, the pump will be creating bubbles in the system right before it goes into the intake mani..thus not allowing good heat transfer in the intake manifold & Higher intake temps.
As I said in the post prior I've setup several of these & not 1 car has come back because the pump failed... and this goes back to when it 1st came out almost 5 years ago. Yes our cars came with bad or faulty pumps, if you replace it with a better one you will never have this problem again.
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Old Mar 20, 2011 | 04:15 PM
  #30  
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Originally Posted by BlilBT
Right on, I set up several of these years ago including my own car, Josh's car is a DD w/72,000 miles on it w/ 60's and a 2.7 pulley & his car runs as cool as cucumber still. Mine on a 2.8 w/ 42's my temps never get above 125F even sitting still. I'm also running the option B tank w/ 3/4 bleeder line, setup right the pump will never see temps like it was before the mod.
By the way Tenn nice to see your still around!
good to see you too buddy!

Originally Posted by nizzle
Apparently you need some of that common sense too. 1st of all, if you dont think keeping your pump cooler dosent have the potential to extend pump life then your crazy. 2nd, the pump does not heat up the fluid. The fluid does not run thru the whole pump motor assembly picking up heat. The fluid only touches the impeller for what maybe .5 sec? and the impeller does not get hot. Considering the bosch pumps we use fail so much, it's worth a try since there is NO advantage to running it the other way.
1. that's your best comeback? really?
2. i never said that keeping the pump cooler doesn't have the potential to extend pump life
3. since i never said that, the rest of your argument is irrelevant

4.. i'll say it again, my setup has been this way for over 2 years since my stock pump failed. my replacement pump is still working

Originally Posted by BlilBT
Not answering for Tenn...but the pump & rough edges in our systems create bubbles...which won't allow heat transfer nearly as good, thats why the pump feeds the heat exchanger.. which feeds the bleeder line to remove the air right after the pump. If the bubbles flow thru the heatexchangers 1st, it doesn't allow the coolant to properly tranfer the heat. Yes our system create bubbles due to all the rough edges and pump impeller, the more you remove them.. the better the system works.

If you did it the other way the pump would see the same kind of temps due to bad Heat transfer thru the H/E, another words the sooner you get rid of the bubbles the cooler the coolant will get while going thru the H/E, the pump will be creating bubbles in the system right before it goes into the intake mani..thus not allowing good heat transfer in the intake manifold & Higher intake temps.
As I said in the post prior I've setup several of these & not 1 car has come back because the pump failed... and this goes back to when it 1st came out almost 5 years ago. Yes our cars came with bad or faulty pumps, if you replace it with a better one you will never have this problem again.
couldn't have said it better myself...
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Old Mar 20, 2011 | 10:06 PM
  #31  
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well my iats hover around 70 degrees how bout you?
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Old Mar 20, 2011 | 10:16 PM
  #32  
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[QUOTE=Tennpenn83;5645601]good to see you too buddy!



1. that's your best comeback? really?
2. i never said that keeping the pump cooler doesn't have the potential to extend pump life
3. since i never said that, the rest of your argument is irrelevant

4.. i'll say it again, my setup has been this way for over 2 years since my stock pump failed. my replacement pump is still working

Based on your most recent "comeback" your need to leave me alone. I never said that you disagreed with the cooler pump theory. I was just stating that incase you did think that way. You made a reference to common sense that led me to believe that you did not agree me and did do in a disrespectful manner and I was just telling you what common sense would have told you if has a little more of it.
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Old Mar 20, 2011 | 10:18 PM
  #33  
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Originally Posted by nizzle
well my iats hover around 70 degrees how bout you?
maybe youre iat1 on a 65 degree day lmao!
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Old Mar 20, 2011 | 10:24 PM
  #34  
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Originally Posted by 05Slowline
maybe youre iat1 on a 65 degree day lmao!
Nice dis attempt but IAT2's sir. Sorry
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Old Mar 20, 2011 | 11:15 PM
  #35  
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so my IAT's are around 125-130? Is that too high? Bear in mind I only have one IAT reading being a 2.2 supercharged. But I never did get a clear answer for the best placement of the cores in the IM? I guess I'll just follow the diagrams.
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Old Mar 20, 2011 | 11:32 PM
  #36  
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From: Sea-Town
There is a good thread at chevy cobalt forum .com

Look for how to do the dual pass endplate.

css.net wont let me post the link. sry
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Old Mar 20, 2011 | 11:36 PM
  #37  
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Originally Posted by redcobalt07
so my IAT's are around 125-130? Is that too high? Bear in mind I only have one IAT reading being a 2.2 supercharged. But I never did get a clear answer for the best placement of the cores in the IM? I guess I'll just follow the diagrams.

mmmmm 125 130 is okay i think. Mine are that high after I race or something but not just driving around town.
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Old Mar 21, 2011 | 12:06 AM
  #38  
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Yeah that is the link I was going to use. Thank you!!
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Old Mar 21, 2011 | 07:16 AM
  #39  
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Originally Posted by nizzle
well my iats hover around 70 degrees how bout you?
IAT2's are directly proportional to IAT1, and the amount of boost you are pushing, if at all. this statement means nothing to me, as many factor affect IAT2's.

what are your IAT1's at the time? normally IAT2's are around 20 degrees higher than IAT1's under normal cruising.


Originally Posted by nizzle
Based on your most recent "comeback" your need to leave me alone. I never said that you disagreed with the cooler pump theory. I was just stating that incase you did think that way. You made a reference to common sense that led me to believe that you did not agree me and did do in a disrespectful manner and I was just telling you what common sense would have told you if has a little more of it.
you are really making yourself look uneducated. i would be willing to bet that...

... ah nevermind. i don't waste my time on retards like you anymore. for the record, i don't agree with you.
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Old Mar 21, 2011 | 10:04 AM
  #40  
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Originally Posted by Tennpenn83
IAT2's are directly proportional to IAT1, and the amount of boost you are pushing, if at all. this statement means nothing to me, as many factor affect IAT2's.

what are your IAT1's at the time? normally IAT2's are around 20 degrees higher than IAT1's under normal cruising.




you are really making yourself look uneducated. i would be willing to bet that...

... ah nevermind. i don't waste my time on retards like you anymore. for the record, i don't agree with you.
YOU ARE 100% WRONG! Our cars have a temp sensor after the supercharger a.k.a IAT2. So IAT2's are in NOWAY derived by the scan gauge using info from IAT1. IAT1 has it's own senrsor and so does IAT2. And maybe it is usually 20 degrees higher than IAT1's under cruising conditions but not if you're jammin on it.
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Old Mar 21, 2011 | 03:05 PM
  #41  
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Can you guys stop arguing please? Tennpenn do you think my IAT's are too high?
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Old Mar 21, 2011 | 03:51 PM
  #42  
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Originally Posted by nizzle
YOU ARE 100% WRONG! Our cars have a temp sensor after the supercharger a.k.a IAT2. So IAT2's are in NOWAY derived by the scan gauge using info from IAT1. IAT1 has it's own senrsor and so does IAT2. And maybe it is usually 20 degrees higher than IAT1's under cruising conditions but not if you're jammin on it.
did you even read what i wrote?

IAT1's directly affect IAT2. no **** there are 2 sensors, that's why i said IAT1, and IAT2

If IAT1's are higher to begin with, then IAT2's will be even higher as a result. if you started off with 30* IAT1's, then it's probably good to expect lower IAT2's than if you were at 90* IAT1's. there's no way that your statement "my IAT's hover around 70" is accurate, as if your IAT1's were over 70 to begin with, I would highly doubt that your IC system is more efficient than anyone else's on the forums and keeps temps at or below ambient.

Originally Posted by redcobalt07
Can you guys stop arguing please? Tennpenn do you think my IAT's are too high?
I don't mean to take away from your thread, please understand i am only trying to help dismiss the huge amount of misinformation on these forums from dumb ***** like nizzle. sorry about that

you said you have a 2.2 supercharged, with only 1 intake temp sensor. what is the location of this sensor? are these temps during normal driving or only after a WOT pull?
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Old Mar 21, 2011 | 05:27 PM
  #43  
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Originally Posted by Tennpenn83
did you even read what i wrote?

IAT1's directly affect IAT2. no **** there are 2 sensors, that's why i said IAT1, and IAT2

If IAT1's are higher to begin with, then IAT2's will be even higher as a result. if you started off with 30* IAT1's, then it's probably good to expect lower IAT2's than if you were at 90* IAT1's. there's no way that your statement "my IAT's hover around 70" is accurate, as if your IAT1's were over 70 to begin with, I would highly doubt that your IC system is more efficient than anyone else's on the forums and keeps temps at or below ambient.



I don't mean to take away from your thread, please understand i am only trying to help dismiss the huge amount of misinformation on these forums from dumb ***** like nizzle. sorry about that

you said you have a 2.2 supercharged, with only 1 intake temp sensor. what is the location of this sensor? are these temps during normal driving or only after a WOT pull?
well temp here today is 49* - 50* so YES my IAT2's are hovering around 70 MAYBE 80. They go up and down as I drive. If i am sitting and not moving, they can get up over 100* but as soon as I put the engine under a load and the ic pump turns on, my IAT's go back down to in the 70's and 80's. Maybe as the weather get warmer they will hover a little higher. I dont know why I have to explain everything like i am talking to 2nd graders.

PS the only dumb **** here is you.
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Old Mar 21, 2011 | 06:12 PM
  #44  
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Originally Posted by nizzle
well temp here today is 49* - 50* so YES my IAT2's are hovering around 70 MAYBE 80. They go up and down as I drive. If i am sitting and not moving, they can get up over 100* but as soon as I put the engine under a load and the ic pump turns on, my IAT's go back down to in the 70's and 80's. Maybe as the weather get warmer they will hover a little higher. I dont know why I have to explain everything like i am talking to 2nd graders.

PS the only dumb **** here is you.
this is why you're a dumb ****

the intercooler pump turns on after 10 seconds of engine running (on stock tune) and stays on until you turn off the car. it doesn't turn off if your engine is idling. on a stock tune, the only time it would turn off while the car is running, is if the outside temp dropped below 5*,

on a tune, you can set it to come on as soon as you turn the key, so there is no 10 second delay

once again, you are fighting a losing battle.
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Old Mar 21, 2011 | 06:17 PM
  #45  
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Originally Posted by Tennpenn83
this is why you're a dumb ****

the intercooler pump turns on after 10 seconds of engine running (on stock tune) and stays on until you turn off the car. it doesn't turn off if your engine is idling. on a stock tune, the only time it would turn off while the car is running, is if the outside temp dropped below 5*,

on a tune, you can set it to come on as soon as you turn the key, so there is no 10 second delay

once again, you are fighting a losing battle.
Like i said. i will prove it by testing when the power is sent from the ecu to the pump. Then there will be nothing anyone can say (not even me IF I am wrong, which I'm not)
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Old Mar 21, 2011 | 06:24 PM
  #46  
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lmao @ taking crusing IAT's.
Mine were usually 10 degrees apart do I get a cookie.
Only time they matter is after a pull sorry.
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Old Mar 21, 2011 | 06:25 PM
  #47  
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Originally Posted by 05Slowline
lmao @ taking crusing IAT's.
Mine were usually 10 degrees apart do I get a cookie.
Only time they matter is after a pull sorry.
This is true, however, this conv. is far beyond that point now LOL
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Old Mar 21, 2011 | 06:26 PM
  #48  
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Originally Posted by Tennpenn83
this is why you're a dumb ****

the intercooler pump turns on after 10 seconds of engine running (on stock tune) and stays on until you turn off the car. it doesn't turn off if your engine is idling. on a stock tune, the only time it would turn off while the car is running, is if the outside temp dropped below 5*,

on a tune, you can set it to come on as soon as you turn the key, so there is no 10 second delay

once again, you are fighting a losing battle.
LOL. I'm going to prove that it turns off when I'm idling!
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Old Mar 21, 2011 | 06:32 PM
  #49  
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Originally Posted by nizzle
Like i said. i will prove it by testing when the power is sent from the ecu to the pump. Then there will be nothing anyone can say (not even me IF I am wrong, which I'm not)
it doesn't even take that much, man. if you turn your key, not even starting the motor, but just turn your key, your pump will turn on after 10 seconds. that's on a stock tune.

on any aftermarket/custom tune, you can set it to turn on as soon as you key on. no need to test power from the ecu. let's try that instead.

if for any reason it doesn't turn on as described, it's likely you have a dead ic pump
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Old Mar 21, 2011 | 06:34 PM
  #50  
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Originally Posted by redcobalt07
so my IAT's are around 125-130? Is that too high? Bear in mind I only have one IAT reading being a 2.2 supercharged. But I never did get a clear answer for the best placement of the cores in the IM? I guess I'll just follow the diagrams.
What kind of temps is outside air at the time, they are 125 - 130, if it's 90 -95 outside..then they are fine. My car with a 2.8 at 95 degrees is around 125 sitting still, soon as I start to drive they drop to around 110-115... but keep in mind I'm running a Aftermarket H/E & stock H/E, the lower you can keep the number the better!
By the way 2 inner cores little hole out, 2 outer cores big hole out on the laminovas

Last edited by BlilBT; Mar 21, 2011 at 06:40 PM.
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