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Intake and air cleaner update

Discussion in '1982-Present GM Diesel' started by RLBstein, Oct 24, 2002.

  1. RLBstein

    RLBstein 1/2 ton status

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    Well I finally did it...I installed the J-code intake from my extra 6.2L in the garage and personally don't really notice a difference. I also removed the air silencer and stock hose and replaced it with 3 inch pvc and ran it from the grill to the air cleaner assembly. I think it has a little more pep to it with these new installs but probably as much as a good wax job on the body would do /forums/images/graemlins/grin.gif /forums/images/graemlins/grin.gif /forums/images/graemlins/grin.gif. I wasnt prepared for the extra things I would have to do to get it to work...such as replacing the left side valve cover and figuring out a new place to mount my secondary fuel filter (since it mounts to the old intake) But I don't regret it...oh and one other thing, it seems a lot louder now under the hood. /forums/images/graemlins/confused.gif
     
  2. BigBluOx

    BigBluOx 1/2 ton status

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    I had that done (the air cleaner intake hose), and I didn't notice much difference other than noisier and easier to get to stuff under the hood without that big piece in there. I did notice a bit more 'seat-of-the-pants' feel when I put a K&N filter in tho... /forums/images/graemlins/thumb.gif /forums/images/graemlins/thumb.gif

    Jon /forums/images/graemlins/burb.gif
     
  3. OFFRDK5

    OFFRDK5 1/2 ton status Premium Member

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    I used 4" pvc. It will suck my shirt in if I get too close!! I noticed a difference when I put the PVC in. Did you enlarge your hole at the front?
     
  4. arveetek

    arveetek 1/2 ton status

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    It got noiser because you removed the silencer. There is nothing covering the intake, no throtle plates such as in a gasser, to keep the internal engine noises from reaching the driver. So GM installed the silencer/muffler to quiet things down.

    I too installed a J code, and didn't notice any power gains. Before the swap, I pulled my fifth-wheel up a large hill several times noting the speed each time. I then did the same test again after swapping intakes. I noted absolutely no improvement whatsoever. Still, I think it has to help the engine breathe much better. I know it will help when I get my turbo installed.

    Besides, it'll make changing the fuel filter much easier, now that you can get to the thing, right? /forums/images/graemlins/wink.gif

    Casey
     
  5. RLBstein

    RLBstein 1/2 ton status

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    Are you still using the plastic piece that mounts in the radiator support, the flat faced circular piece that prevents birds from flying into your intake /forums/images/graemlins/blush.gif
     
  6. OFFRDK5

    OFFRDK5 1/2 ton status Premium Member

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    No. Wide fricken open. I even cut the front of the grill up so it was completely unrestricted!!

    Check out my pics in my sig. It shows how wide open it is.
     

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