Duramax Diesels Forum Truck of the Week
  #16  
Old 02-19-2017, 03:11 PM
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Thanks Rick.
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  #17  
Old 02-19-2017, 03:47 PM
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Sub. Great thread and look forward to more
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  #18  
Old 02-19-2017, 10:34 PM
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Hey Rick do you make remote mount up pipe setups? I have ATS manifolds and am looking to do a remote mount system.
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  #19  
Old 02-20-2017, 08:07 AM
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I have but they are usually on a one off basis. See Joshh's thread for one of the latest.
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  #20  
Old 02-20-2017, 08:36 AM
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Rick, just out of curiosity, ive seen on facebook how "Steed Speed" had shown a video of their new duramax exhaust manifolds. basically blowing air into one end with cardboard flaps over each open end of the manifold to show how air is directed. is there really any merit to that to "show improvement" or is it just bs to make you think you are getting an improvement? do you guys do any testing like that if it does have merit to it?

here is a link to the fb video (if you have a fb account)
https://www.facebook.com/leen.steed/...type=2&theater

Also, on a separate note. On the towflow up pipes, being that stock manifolds arent perfect, whats the likely hood of the uppipes lining up with the exhaust manifold outlet or are they relatively consistant in placement across the board so its not much of an issue?
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  #21  
Old 02-20-2017, 10:11 AM
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Neat little video, but IMHO doesn't prove much. What you would ideally like to see is a small vacuum on the other ports to help scavenge the cylinders.

Inherently a couple of brand manifolds would fail both those tests and if I get around to making a thread on the manifolds I will try to explain why.

As far as the up pipes, we always make our manifold outlets slightly smaller diameter and the up pipes slightly larger. We have checked about 20 - 30 manifolds and they seem to be pretty consistent. That being said checking them with a gasket would be the best idea.
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  #22  
Old 02-20-2017, 10:23 AM
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Quote:
Originally Posted by RickDLance View Post
Neat little video, but IMHO doesn't prove much. What you would ideally like to see is a small vacuum on the other ports to help scavenge the cylinders.

Inherently a couple of brand manifolds would fail both those tests and if I get around to making a thread on the manifolds I will try to explain why.

As far as the up pipes, we always make our manifold outlets slightly smaller diameter and the up pipes slightly larger. We have checked about 20 - 30 manifolds and they seem to be pretty consistent. That being said checking them with a gasket would be the best idea.
10-4, thank you for the info
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02 LL7 2500HD CC/LB dmax/alli "The Limo"

BIG THANKS TO: Mike L, Steve, Trent, Guy, Dan, Ruben, Josh H, Scott, Brian and everyone else who has put a hand in to help me.

best time to date: 12.39

motor died/bent rods = 3/11/11
back from the dead 7:04pm 4/9/2012

Limo is back in the garage, now driving a built chevy tracker
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  #23  
Old 04-09-2017, 10:23 AM
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Sent you a pm Rick.

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  #24  
Old 04-09-2017, 11:14 AM
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Quote:
Originally Posted by RickDLance View Post
Neat little video, but IMHO doesn't prove much. What you would ideally like to see is a small vacuum on the other ports to help scavenge the cylinders.

Inherently a couple of brand manifolds would fail both those tests and if I get around to making a thread on the manifolds I will try to explain why.

As far as the up pipes, we always make our manifold outlets slightly smaller diameter and the up pipes slightly larger. We have checked about 20 - 30 manifolds and they seem to be pretty consistent. That being said checking them with a gasket would be the best idea.
I just saw this. I don't think it proves anything. Couldn't you do the same test with a stock manifold and get the same results?
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  #25  
Old 04-09-2017, 12:39 PM
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Just got a set of these tow flows ordered with the black ceramic coating. Im gonna swap them when i swap trans....should be alot easier to do then.

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