Dual Pass intercooler - Page 10 - Cobalt SS Network

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Dual Pass intercooler

Old 05-21-2007, 10:47 PM
  #226  
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Originally Posted by TxLonghorn#1 View Post
does anybody have a diagram of option B...include the "Y" fitting and if you used the 0.040" orifice. I can't understand the one that GM has

The Y is for Option A & you Need 2 Tees for Option B
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Old 05-21-2007, 10:50 PM
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im running a Y and a T
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Old 05-21-2007, 11:09 PM
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So lets see some diagrams. I am doing mine pretty soon. Curious to see how people have rigged there's together.
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Old 05-22-2007, 02:53 AM
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Originally Posted by dstinsman56 View Post
So lets see some diagrams. I am doing mine pretty soon. Curious to see how people have rigged there's together.

I second that with similar curiosity. thanks
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Old 05-25-2007, 01:32 PM
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Bump
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Old 05-25-2007, 07:14 PM
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bump......for any one who has a B option diagram
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Old 05-25-2007, 09:41 PM
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Originally Posted by TxLonghorn#1 View Post
bump......for any one who has a B option diagram
I have the Diagram but not Uploaded, But it's easy Starting at the Pump, The Pump is Mark in & Out or at least Mine was! The Out Port on the Pump goes to The Stock H/E IN>>>>Then to Your Dual Pass IN If you have a 2nd H/E>>> Then Out of the H/E to the IN Port on the Dual Pass Endplate which is the center 1>>>>> Then out of the Dual Pass upper & Lower outlets with a short piece of hose >>> Then Connect your 1st tee Making the 2 out Ports 1>> Then a Short piece of Hose again & connect the next Tee >> 1 Outlet of this Tee goes to the New Reservoir & The last 1 goes to the Pump IN! Done
Then take the Plug off the Top of your stock H/E & Run a 1/4 inch Line to the Reservoir inlet with a .40 orifice in the Line to Slow the Flow!
Crate engine Depot has the Details & Diagrams on the Install!
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Old 06-04-2007, 01:31 PM
  #233  
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The stock fill neck goes away when you do the Option B tank right? the Tee goes where the current neck is and that line runs to the tank. then the 1/4" line runs to the stock HE nipple right?
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Old 06-04-2007, 11:36 PM
  #234  
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Originally Posted by chipmonk212121 View Post
The stock fill neck goes away when you do the Option B tank right? the Tee goes where the current neck is and that line runs to the tank. then the 1/4" line runs to the stock HE nipple right?
Correct >> The stock neck is not needed.
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Old 06-05-2007, 12:25 AM
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ya, thats what i gathered from the diagram
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Old 06-16-2007, 12:02 PM
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Originally Posted by BlilBT View Post
I have the Diagram but not Uploaded, But it's easy Starting at the Pump, The Pump is Mark in & Out or at least Mine was! The Out Port on the Pump goes to The Stock H/E IN>>>>Then to Your Dual Pass IN If you have a 2nd H/E>>> Then Out of the H/E to the IN Port on the Dual Pass Endplate which is the center 1>>>>> Then out of the Dual Pass upper & Lower outlets with a short piece of hose >>> Then Connect your 1st tee Making the 2 out Ports 1>> Then a Short piece of Hose again & connect the next Tee >> 1 Outlet of this Tee goes to the New Reservoir & The last 1 goes to the Pump IN! Done
Then take the Plug off the Top of your stock H/E & Run a 1/4 inch Line to the Reservoir inlet with a .40 orifice in the Line to Slow the Flow!
Crate engine Depot has the Details & Diagrams on the Install!

I plan on doing exactly this but with a twist. the reservoir will be included in the circulation with a port in the side for in and out the bottom to the pump. bleeding off the air from the HE will have to be intermittent most likely but will work.
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Old 06-20-2007, 11:30 PM
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iat2's

Dumb question, but can't find the answer - what are you guys using to measure IAT2 temps?
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Old 06-21-2007, 11:28 AM
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hp tuners, or an interceptor gauge.
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Old 06-21-2007, 12:31 PM
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Originally Posted by ssnipes View Post
I plan on doing exactly this but with a twist. the reservoir will be included in the circulation with a port in the side for in and out the bottom to the pump. bleeding off the air from the HE will have to be intermittent most likely but will work.


found on ebay....lol....perfect
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Old 06-21-2007, 07:15 PM
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Originally Posted by ssnipes View Post


found on ebay....lol....perfect
The Resevoir is already part of the Circulation the way Gm Has it set up! You need #1 1/4inch line & #1 3/4 inch Line, The system bleeds thru the 1/4 inch line & flows back thru the 3/4 line at a slow Pace!
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Old 06-21-2007, 07:18 PM
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That slightly lowers the flow to the manifold though, and if you use the .040 orifice, then you remove all circulation.
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Old 06-21-2007, 09:09 PM
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Originally Posted by ItalianJoe1 View Post
That slightly lowers the flow to the manifold though, and if you use the .040 orifice, then you remove all circulation.
No you don't, I'm running it! If fluid is coming in it has to go out or Pressure would build up & the overflow would be doing it's job! You can take the cap off & see it running thru my Reservoir! As a matter of fact it shots from the front & Hits the back wall Because it's under pressure! The orifice is just to slow down the flow & keep the rest of the system pressurized, Hince self Bleeding! If the fluid didn't circulate thru the reservoir it would'nt bleed the system!

Last when you fill the system, You fill it the the Reservoir! So if it didn't drain or circulate with the system why would you fill thru it?
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Old 06-21-2007, 09:10 PM
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Where do you have the resivior plumbed into the system?
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Old 06-21-2007, 09:19 PM
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Originally Posted by ItalianJoe1 View Post
Where do you have the resivior plumbed into the system?
Dude it's the way the Option B works! You get rid of the neck you have (Which is your stock so called Reservoir or exspansion area) & replace it with a Tee Then run 1 side to the Reservoir! I've been running this since it came out, It's all been discusssed thru this Thread! just look back a couple Pages!
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Old 06-21-2007, 09:27 PM
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Ok, I did that, and never got the air out of the system. Converted back to stock resivior, and its working nice again. Just wondering what I'm missing.
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Old 06-21-2007, 09:38 PM
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Originally Posted by ItalianJoe1 View Post
Ok, I did that, and never got the air out of the system. Converted back to stock resivior, and its working nice again. Just wondering what I'm missing.
Did you check to make sure the Inlet & outlet were connected right & that the Tees were on right? Me & LsjPuP are running it, He drives his car every day & has absolutely No Problems! I drove my car to the station & Home, Then refilled it & did it again! Now it maintains half full all the time Or Half empty how ever you want to look at it!
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Old 06-21-2007, 09:40 PM
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My level was ok, but there wasn't flow through the manifold. If I full-throttled second and third, I would see boost over 19-20psi, and the car would pull timing. Now, its back down to 17psi and running strong. I like the auto-bleeding idea, but I'm not sure why it wasn't working for me. I had the same setup you do.
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Old 06-21-2007, 09:47 PM
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Originally Posted by ItalianJoe1 View Post
My level was ok, but there wasn't flow through the manifold. If I full-throttled second and third, I would see boost over 19-20psi, and the car would pull timing. Now, its back down to 17psi and running strong. I like the auto-bleeding idea, but I'm not sure why it wasn't working for me. I had the same setup you do.
Just have to Look at it at 1 of the meets! Something had to be wrong, because while maintaining the fill level it was also swirling! Showing that the 3/4 return line was reflowing the fluid!
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Old 06-21-2007, 09:54 PM
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you T'd into the hose right where the stock fill neck is right? where did you run the 3/4 line? My only thought is that it was too high and was getting airlocked.
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Old 06-21-2007, 10:03 PM
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Originally Posted by ItalianJoe1 View Post
you T'd into the hose right where the stock fill neck is right? where did you run the 3/4 line? My only thought is that it was too high and was getting airlocked.

1) If you have the stock endplate it wont work(Dual pass endplate requried)
2) The center Port is the in from H/E or H/Exchanger's!
3) The top & Bottom ports get tied together with the 1st Tee
4) Then a small piece of Hose, Then the 2nd Tee(Which is the 1 that takes the place of the stock Neck!
5) 2 ports left on the Tee 1 goes to the New Reservoir & the other goes to the Pump for the return trip thru the H/E
6) the 1/4 inch line goes from the top of the stock H/E to the 1/4 inlet port on the Reservoir!
Done!

Oh & don't forget to change your laminova's around or it wont work!
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