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Thread: Zezino's Mods + Pics

  1. #1

    Default Zezinho's Mods + Pics

    I am posting for him since he was having difficulties uploading the pics, and this is what he said:

    First photo is of the larger oil cooler, it's a Setrab #634-12. In
    addition to substituting the smaller original oil cooler with this
    larger one, we also added a second Setrab on the other side, then ran
    the oil line from the original to the second one and then back into the
    turbos, so a lot more volume and more time for it to cool as well.

    Second photo is of the louvers we cut into the plastic shields that hide
    the oil coolers, objective was just to allow for a little more air
    circulation around the oil coolers.

    Third photo is of the custom exhaust. First we increased it to 3" vs
    the 2 1/2" original exhaust. Then we removed the cats and the mufflers.
    You'll note though that we built the exhaust in such a way that if the
    mufflers need to go back on it's a relatively simple maneuver, vs having
    to rebuild the whole thing. He also ceramic-coated the exhaust on the
    inside.

    Fourth photo is a snippet of the louvers we cut into the underbody pan,
    in the low-pressure area under the engine. Fifth photo is underneath
    and shows rough location and quantity. Theory is we'll bleed out some
    of the heat, improve circulation a bit without materially affecting any
    downforce the underbody pan is creating.

    Last photo is of the CCW Classics, these are the wheels we had
    custom-sized for the Noble, so they fit...may not be much of a looker
    but they're <19 lbs and are proven wheels...Paul I know you were hoping
    for a better looking wheel than the Dymags, but I actually like the look
    of those, so I may not be much help to you!


    Anyway, results were a roughly -35C drop in oil temperatures, even on
    very hot days, and a pick-up in whp from 312 before the mods to 384 now.
    Only other thing we did that could be affecting things was we put in an
    AFR, as after the mods it was running a little lean, set it to @12.2 now
    -- not sure if it was running lean before the mods or not.

    I don't know how these changes could've generated this much power,
    neither does the guy who did the work for me, he was expecting a little
    pick-up in power but nothing like this. Guess the original set-up is
    pretty restricted, only thing I can figure. Just so you know though, it
    does get louder this way and pretty attention-grabbing...pops and
    snorts, and on the track last weekend a guy I was passing said it was
    shooting flames out the pipes...so I immediately asked him to drive it
    in front of me and sure enough, although "shooting flames" may be
    somewhat of an exaggeration, you can definitely see the orange "pop" on
    hard deceleration, no mistaking it...pretty cool...

    If anyone wants more info, the guy who did the work is Bob Dier at
    C.A.R.S. in Omaha, his number there is 402-734-7575, and perhaps he can
    shed more light on the subject. Thanks for reaching out, hope this
    helps!

    -David
    Thanks David!
    Last edited by Brav; 06-01-2006 at 08:17 PM.
    "Some people play hard to get... I play hard to want."
    Noble: 05 M12, M400 turbos, RPI water/oil cooling, RPI Exhaust

  2. #2
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    Nice exhaust system. From the picture, it doesnt look 3" all the way. Perhaps from the rear section back? Anyhow, I can understand how going that route will increase the power significantly. That exhaust routing type is like the mr2 aftermarket exhaust which greatly improved flow and hp.
    Eloy
    Race Precision, Inc
    7029 Marcelle Street
    Paramount, CA 90723
    www.raceprecision.com

  3. #3

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    His hp wad down below average at first, probably due to heat soak.
    "Some people play hard to get... I play hard to want."
    Noble: 05 M12, M400 turbos, RPI water/oil cooling, RPI Exhaust

  4. #4
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    Yes, coming out of each side is 2 1/2 inch, chose not to mess with the original outlets, then opens up to 3" the rest of the way out.

  5. #5
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    Several of us have noticed way low whp in the stock M400's, even before significant heat soak...although heat soak definitely makes it worse, to your point...before the mods, on our second dyno run after the car was hot, only got 265 whp, ...kind of an M300 I guess....

  6. #6
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    Zezinho,

    Those mods look great. Can you tell a difference with the louvers underneath?

    If I were keeping my car, I would be doing most of the mods to it.
    Dino

    Sarthe Grey Rossion Q1 (Sold to a good home in Colorado)
    Wolf GB08 LMP3/CN Sports Prototype www.motorsports-sw.com www.wolfracingcars.com
    Red 2006 A4 (slow but good gas mileage)
    2012 Audi Q7 TDI (Awesome Highway & Tow Vehicle w/Torque and High MPG)

  7. #7

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    You went with no mufflers at all? How's the sound volume?
    RacePrecision GotApex

    "Be ashamed to die until you have won some victory for humanity." ~ Horace Mann

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    No, unfortunately I can't tell how much the louvers are helping in and of themselves, because didn't test separate from the other mods...but the whole package definitely works better than stock, somehow we're getting heat out of there, and physics would support the notion of the low pressure zone...besides, even if I can't prove it, I tell myself the louvers are helping because they are SO cool and because Bob did such a beautiful job cutting and forming them...

    As to the noise w/o the mufflers, yes it is louder and in fact can be a little irritating on longish highway drives, so need to be cognizant of that. But when you get on it, it's definitely worth it, really sounds amazing! And of course that extra power...!

  9. #9
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    can you post a clip of the exhaust sound....I'm dying to hear what it sounds like.. Thanks.

  10. #10
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    How do those wheels fit on a Noble? Doesn't look like a 4-bolt pattern to me. Did you change hubs?
    Last edited by caccobra; 06-02-2006 at 08:10 AM.

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