Results 1 to 7 of 7

Thread: header/exhaust 1976 280z question

  1. #1
    Registered User Dancerbeth72's Avatar
    Member ID
    CZCC-21056
    Join Date
    Feb 2010
    Location
    Austin, TX
    Age
    48
    Posts
    2

    Default header/exhaust 1976 280z question

    Hello,

    I am brand new to Z-ownership and am needing to do some work on the exhaust system of my 76 280z. I read most of the posts in this forum and am now more confused than when I started.

    Most of the time the Z will be my daily driver and my driving style is not very spirited. I am wanting to make sure my mods do not negatively affect mpg. Also I do not need Daisy to be terribly loud.

    What are the major differences between the 6 to 1 headers and the 3 to 2 headers from MSA? I think I read somewhere that the 3 to 2s were better for lower-end driving and read somewhere else that there was no proof of that.

    Any input or recommendations would be greatly appreciated.

    Thank you,
    Beth

  2. #2
    Registered User Pop's Z's Avatar
    Member ID
    CZCC-8342
    Join Date
    May 2005
    Location
    Fort Collins, Colorado
    Age
    75
    Posts
    430

    Default

    Hi Beth, For a stock motor you will gain very little with a header. The stock exhaust manifold flows well, is quieter, and runs less hot. You can purchase an exhaust system from MSA or just take the car to your local muffler shop. Try to use a shop that caters to the hot rod crowd and you'll get what you want. As far as the differences between 3-2 and 6-1 there are very knowlegable people on here that can give you that info. It might take a few days so be patient.
    Cheers, Mike

  3. #3
    Registered User d240zx2's Avatar
    Member ID
    CZCC-15137
    Join Date
    Sep 2007
    Location
    Houston, Texas
    Age
    76
    Posts
    1,334

    Default

    If your car is to be a daily driver with no pretense of being a performance platform, stick with the stock exhaust system. Like Pop's Z said, you'll gain very little by going to either 6-1 or 6-2 headers and it'll cost you a small bundle.
    First & Third owner of HLS30-00721
    B. 01/70 D. 03/12

    New owner of HLS30-15653
    B. 12/70 D.

    Frank in Houston, Texas

  4. #4
    Registered User Dancerbeth72's Avatar
    Member ID
    CZCC-21056
    Join Date
    Feb 2010
    Location
    Austin, TX
    Age
    48
    Posts
    2

    Default

    No pretense whatsoever. Compared to the Geo Metro I was driving, the Z is already a performance vehicle.

    I do need to do something about her exhaust though because it appears to be off a later model and the flange shape does not match the manifold. The muffler is also in bad shape. I am getting exhaust smell in the cabin which could be from the mismatch, the muffler, or the really leaky rear hatch seal.

    Beth

  5. #5
    Registered User Curtis240Z's Avatar
    Member ID
    CZCC-4128
    Join Date
    May 2003
    Location
    Hawaii
    Posts
    539

    Default

    Well if the exhause manifold is the wrong shape (square vs. round) then cost would probably drive the decision since you are not racing it. So if you can find a good used OEM manifold or a proper header (equal length runners) plus a 2.25" exhaust pipe and quality muffler you should be set. MSA's 6 to 1 header is better than their 3 to2 header because the 3 to 2 is not equal length.
    Last edited by Curtis240Z; 02-27-2010 at 08:21 PM.

  6. #6
    Registered User d240zx2's Avatar
    Member ID
    CZCC-15137
    Join Date
    Sep 2007
    Location
    Houston, Texas
    Age
    76
    Posts
    1,334

    Default

    Go with the least expensive repair option first. Mufflers/tailpipes are relatively cheap, exhaust manifolds and the changing of them are not. Hatch seals are relatively cheap and the labor is half an hour in your own garage.
    First & Third owner of HLS30-00721
    B. 01/70 D. 03/12

    New owner of HLS30-15653
    B. 12/70 D.

    Frank in Houston, Texas

  7. #7
    Registered User matria's Avatar
    Member ID
    CZCC-5231
    Join Date
    Nov 2003
    Location
    Walnut Creek, CA
    Posts
    128

    Default

    Hi Beth,

    You mentioned that you were getting an exhust smell in your car. Have you gone through your car and closed off all leaks? Here is one thread on how to check but there are many others.

    http://www.classiczcars.com/forums/s...ad.php?t=34205

    Enjoy the ride,

    Skip
    Early 260Z, In progress.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. 1976 280Z Alternator Upgrade - Minor Issue/Battery Drain
    By Zed Head in forum Electrical (S30)
    Replies: 9
    Last Post: 01-06-2013, 12:42 PM
  2. --> dumb question. 280z vs 280z 2+2
    By marximus in forum Body and Paint (S30)
    Replies: 11
    Last Post: 12-29-2011, 10:59 PM
  3. Buying 280Z, Battery Tray Rust Question - With Pics!
    By mec011 in forum Open S30 Z Discussions
    Replies: 3
    Last Post: 07-20-2009, 11:08 AM
  4. Show us your 1976 280Z (for 76Datusn280Z)
    By mgood in forum Open S30 Z Discussions
    Replies: 8
    Last Post: 11-09-2007, 02:41 PM

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •