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Thread: Just Showing Off: 180 Degree Northstar Headers

  1. #1
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    Lightbulb Just Showing Off: 180 Degree Northstar Headers

    I've been a lurker here for some time now and thought I'd show-off a few pics of some headers I've recently created for my '97 Northstar in a 3" stretched Fiero chassis. They probably won't fit a standard cradle but they might provide inspiration for the few of you who have Northstars and are looking for new exhaust ideas.

    Name:  92r Bare System Qtr View.JPG
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    They're a 1-5/8" OD, equal length (39" +/- 1"), 180 degree design, which means that the outboard ports on one cylinder head merge with the inboard ports on the opposite head into 4-into-1 collectors. That's done to take advantage of the timing of exhaust pulses to maximize scavenging.

    This is the full on view of the aft header:

    Name:  93r Bare System Aft View.JPG
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    Here's the same view of the forward header:

    Name:  94r Bare System Fwd View.JPG
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    And finally a top down view:

    Name:  95r Bare System Top View.JPG
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    Here they are mocked up on the engine (without the collectors).

    Name:  90 Underside Aft View.JPG
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    The next step is getting them TIG welded and then ceramic coated. If interested, you can read more details about them and about my F355 project in my blog at: http://bloozeown.weebly.com/ The blog isn't the easiest to navigate since posts are in reverse chronological order, and are organized into sub-headings, but it matches my disorganized mind. The exhaust system is covered under the sub-heading "Chassis" (where else!).

  2. #2
    Senior Member IKAROS's Avatar
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    Its a work of art Dave...
    I also went to your blog & admired your precise work for all the components that you’ve made.I envy your area of expertise...

    P.S.If your mind is disorganized, mine is in a complete chaos...
    Last edited by IKAROS; 04-15-2016 at 12:51 PM.

  3. #3
    Senior Member 88.5countach's Avatar
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    Wow nice stuff, great website. Impressive build!

  4. #4
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    Very nice!

  5. #5
    Member 20below's Avatar
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    Dave, I've often thought of doing this on my longitudinal Northstar set-up in my 288 GTO project but I have limited space with the frame.

    I look forward to hearing it down the road. Nice work.

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  7. #7
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    Thanks for the kind words Ikaros, 88.5countach, and aflo.

    For 20below, the world should be your oyster with a longitudinal set-up! I'll have to look for your build thread to see why you think there's limited space. Surely something like the '60's GT40's bundle-o-snakes could be made to fit, and would look awesome.

    For AdrianBurton: I'm not sure what you have for a transmission, and frame and cradle modifications, but my header design probably wouldn't fit your car. The best thing to do is buy some 1-1/2" ABS plumbing fittings and play "Lego-land" until you come up with a layout that fits. That's all I did. I'm sure you could too.

  8. #8
    Senior Member AdrianBurton's Avatar
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    I know, Im just really dreading it, trying ot get as much done as possibe before Carlisle

  9. #9
    Member 20below's Avatar
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    Quote Originally Posted by AdrianBurton View Post
    I know, Im just really dreading it, trying ot get as much done as possibe before Carlisle
    This is supposed to be something we do for fun & enjoyment as a diversion from the stresses of life.....not to create more stress!LOL

  10. #10
    Senior Member RCR's Avatar
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    I was checking out your build on your blog last weekend. Miss your build at Pff, but thanx for bringing it out to the public again.

    Looks absolutely gorgeous.

    Bob
    Bob custom '84 Fiero SE --->>> custom F408
    http://www.madmechanics.com/forum/cu...ilepic37_1.gif

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