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Custom front manifold/cross-over and Downpipe.

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  • Custom front manifold/cross-over and Downpipe.

    I don't think I've ever posted these pics here. the DP is about 3 years old and the manifold work was done when my engine/trans was out for a trans rebuild 2 years ago.

    I don't remember what I all did exactly off the top of my head....
    -ball joints
    -tie rods
    -Poly A-arm bushings
    -exhaust manifolds
    -various gaskets whether leaking or not
    -full trans rebuild
    -yada yada


    It's amazing how much it woke the engine up and the sound is PERFECT. I have a large port swap in the planning now, so i'm anxious to see how much that helps w/ the better flow it will have.

    Here is what it sounds like right now.

    first start in 4 months - 35* outsideMODS:-Custom front manifold - 1 5/8" primaries to 2" Log-2" X-over-Ported rear manifold-2.5" Down Pipe-2.5" In/Out cat-2...


    MODS:

    -Custom front manifold - 1 5/8" primaries to 2" Log
    -2" X-over
    -Ported rear manifold
    -2.5" Down Pipe
    -2.5" In/Out cat
    -2.5" piping back to 2.5" x 18" Vibrant Resonator
    -2.25" Y
    -C6 Corvette Tips


    Here is a smattering of pics.

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    And here are a few random shots. My welding skills aren't all that great, but the stuff holds, and that's all that counts right... I had fun doing it for ~$200 in materials (high-temp paint and ss flex were expensive). I plan on taking welding classes and redoing it in stainless someday when I have a better 60* in there.






    of course I had to cut the engine mount






    Had flanges cut at work. I made them ~.06" bigger than stock IIRC






    I hogged the living PISS out of the rear manifold where it meets the x-over and DP. I couldn't believe how much material was there. I used up two carbide bits w/ my dads die grinder. I know that helped the flow right there.








    The final product.




    I had to put a shield on the engine mount next to the water pump as the exhaust is right there and I was afraid it would cook that poor hose.







    Down pipe. Started with some random 2.5" piping for $50





    stock.....tiny as shit inside. I was disgusted. A hair over 1.5"....sickening.




    I cut the stock flange off and used it. Again, not the prettiest welding by a LONG shot....but it's held for a few years not and still look ok. It was a PITA getting it to fit....took ~4 hrs of cutting, test fitting, welding, test fitting, test fitting, test fitting. I about pulled my hair out.






    Not much room there.......











    here is the rest of the exhaust. I had an exhaust shop do it as they could do it way faster than I.







    The new Z06 exposes European sports cars for what they really are....overprice, underperforming snobs.

  • #2
    what are you welding with?

    Its runs!!!>>>Aint No 60* Sound Like Mehttp://youtu.be/YKEmNwa141U

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    • #3
      looks like flux core to me i hate that stuff and have hard time with it myself
      94 BerrettaZ26 3400,5 spd, aluminum flywheel, stg3+ spec clutch, poly mounts everywhere, strut and strut to rad braces, s&s headers, euro mirrors, and taillights, E36 headlights, blk widow spoiler, GTU rimz, intrax, KYB, OBD2 swap rear disk swap with ss lines and ss clutch line, addco rear bar

      07 Chrysler 300 Base, with C frt bumper blk halo headlights and foglights. Coming soon tinted taillights and 22". The Family ride

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      • #4
        a regular Miller wire welder.

        The new Z06 exposes European sports cars for what they really are....overprice, underperforming snobs.

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        • #5
          Sounds real good. Always liked 60* without mufflers. I did something similar . Front header rear ported cast manifold. Looks like the rear grandam manifold flows well compared to a log. Can't really feel a good difference since I still have the suck-O Cat and rear exhaust but no muffler. Don't knock on my welds. Skills and flux core own me.

          88 Beretta GTU turbo . 90 Black ASC/McLaren TGP, awaiting 4t80. 2003 Grand AM se 3400/4t45 daily grind.

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          • #6
            damn.... i guess this is where i post my ~80s arc welder results?

            end result was totally worth it through, right Adam?
            1995 Monte Carlo LS 3100, 4T60E...for now, future plans include driving it until the wheels fall off!
            Latest nAst1 files here!
            Need a wiring diagram for any GM car or truck from 82-06(and 07-08 cars)? PM me!

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            • #7
              hell ya it was worth it. Just in the sound alone. I can't wait to get on a dyno....hopefully before I deploy in 2 months to see what the numbers are.

              Maybe I'll have time to throw my large port top swap on....

              The new Z06 exposes European sports cars for what they really are....overprice, underperforming snobs.

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