1st Gen. Ram - All Topics Discussion for all Dodge Rams prior to 1994. This includes engine, drivetrain and non-drivetrain discussions. Anything prior to 1994 should go in here.

2-1/2" or 3" crossover?

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Old Aug 26, 2008 | 08:57 AM
  #1  
CaptainChrysler's Avatar
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From: Ida Grove, IA
2-1/2" or 3" crossover?

Title pretty much sums it up. I am going to upgrade the '89 with a 60mm compressor with a 2-1/2" outlet. Will build a new crossover to fit. Should I just make it the same size as the outlet or will 3" be better?

For you guys that have done it, you swap the plenum cover end for end? Is this necessary or just makes it a straighter shot?

Thanks
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Old Aug 26, 2008 | 09:29 AM
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The air is cooling down as it crosses over the motor, so going larger then the turbo outlet isent a problem I went with 3" when I upgraded my turbo, I do still have one extra mounting flange I had made that is out of 1/2 steel.

PS I am using a air to water intercooler that is 3"aswell.
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Old Aug 26, 2008 | 03:52 PM
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From: Port Orchard,WA
You wouldn't happen to have pictures of you air to water intercooler setup? I am thinking it would be easier to go this route than trying to fit a air to air one in there.
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Old Aug 26, 2008 | 05:01 PM
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I flipped my intake plate end for end (pretty much a straight shot), and I made mine out of 3". I deleted my grid heaters altogether.
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Old Aug 26, 2008 | 05:55 PM
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From: Ida Grove, IA
I forgot to mention, but yeah the grids are going too. Will probably retro-fit them onto the grader.

Already have the gasket for the plate. Have contemplated building a new top altogether. We will see.

3" it is.

Thanks Guys.
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Old Aug 26, 2008 | 10:21 PM
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I can take pictures tommorow its not complete yet ordered my silicone couplers a few days ago. I am using a geo metro radiator with a flexalite fan using a ford intercooler pump for its own closed loop air cooling system.
Mike
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Old Aug 26, 2008 | 10:23 PM
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how do i post pics?
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Old Aug 27, 2008 | 01:45 AM
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From: Port Orchard,WA
make an account at a place like photobucket.com and upload them there and then it will give you a direct link to the pictures. you want the one with the [img] picturelink [/img]. post the code in the reply box here and it will show up when you post.
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Old Aug 27, 2008 | 06:04 AM
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post here goes... be nice to me guys this is my first time I have ever tried to build anything like this
http://i394.photobucket.com/albums/p...n/IMG_0538.jpg
http://i394.photobucket.com/albums/p...n/IMG_0537.jpg
http://i394.photobucket.com/albums/p...n/IMG_0536.jpg
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Old Aug 27, 2008 | 12:41 PM
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From: Port Orchard,WA
looks like a good start to me.
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Old Aug 29, 2008 | 10:10 AM
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Captain, I put some pics in my gallery of my 3" crossover.
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Old Aug 29, 2008 | 11:29 AM
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From: Superior Wisconsin










factor water to air with a custom 3" cross over and a second gen elbow
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Old Aug 29, 2008 | 03:13 PM
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From: Pottstown, PA
^^^ that looks nice. how does that hood stack sound??? got any vids of the truck??
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Old Aug 29, 2008 | 06:06 PM
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http://i303.photobucket.com/albums/n...r_truck049.jpg



http://i303.photobucket.com/albums/n...r_truck049.jpg
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