6.2 Intake type identification help

[snoman87]

I have a 6.2 intake that I am trying to figure how what it's from. It's not a "C" not a "J" intake.

Looks like a dual plain intake with some hoses on either side for emission control, like the C intake but no emission stuff.

Kinda looks like this ... can't post am image because I have nowhere to put it :(
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/ | \
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this image is all screwed up when posted

Any way any advantage to going this route or not?

[ 07-25-2005, 10:43 AM: Message edited by: snoman87 ]

[john8662]

From your description and ASCII drawing, that is the J code intake used on 6.2's. The other two non EGR manifolds (we still call J) are the hummer single plane intake (also has the two CDR tubes) and the later single plane wide open intake, which just has one 1" CDR tube on just one side.

Here is the one that I have on my truck, is this like the one you're describing?

http://members.cox.net/acmdsl/www/truck/ipstudgears/02/800x600/P1080018-800.jpg

You'll notice the tube out the side, it's got em both.

[snoman87]

Yes that is what mine looks like, so I have a "J" code intake ... cool. I asume that this one is better than the "C" but not as good as the later single plain wide open intakes.

Should I block off the CDR and remove it or not?

[john8662]

When installing the turbo you'll have to abandon the CDR tubes going to the intake manifold. You first will need to remove the brass/bronze nippes from the intake, I use a pair of needle nose pliers and turn them, they are just pressed in. Then what you'll do is find a set of freeze plugs or oil gallery plugs that fit the holes where the nippes were and use some sealant on them when inserting the plugs.

The new CDR routing will be from the CDR valve to the port on the turbo side, there will be a 1" tube to connect to on the turbo setup. You'll leave the CDR valve where it's at above the alternator and connected to the oil filler tube.

Don't worry about intakes, the Dual Plane J intake will do just fine for a turbo, even a C manifold will work ok with a turbo beacuse it's all under pressure with the turbo setup. The single plane intake will work well for turbo, but really helps a N/A engine run a little better.

[snoman87]

yes I can see that on my turbo pressure chamber setup. Now, how do I go from the 2 hose setup to the 1 hose ... is it as simple as removing the 2 hoses and replacing them with 1?


While I have the intake loose ... is port matching the intake to the intake gasket worth doing?

[john8662]

The bottom part of the CDR valve is 1" so you just use 1" hose. The only problem I can see so far is that we'll need a hose with a 90* molded into the hose, because it will have to make a turn right out of the CDR valve.

[snoman87]

I was supposed to have everything when i got mine ... I will have a look in the part bucket and see what else I have smile.gif