Results 1 to 3 of 3

Thread: Newb questions - Airbox & Ducktail

  1. 03-31-2014, 09:26 AM #1
    pezdoctor
    pezdoctor is offline
    Junior Member
    Join Date
    Mar 2014
    Posts
    16

    Newb questions - Airbox & Ducktail

    Greetings.
    1st post---newb questions:

    1) I have read that airbox pop-off valve is recommended for Pre-84 cars, but then only listed for CIS engine. Is the popoff not needed for MFI engines (e.g. 73 RS 911/83)?

    2) Are all original 73/74 ducktails steel/fiberglass/or combo---e.g. how/where to check for originality using magnet?

    [Didn't find #1 in a search]

    Thanks,
    Keith
    Reply With Quote Reply With Quote
  2. 03-31-2014, 09:39 AM #2
    Harvey Weidman
    Harvey Weidman is offline
    Senior Member Harvey Weidman's Avatar
    Join Date
    May 2005
    Location
    Oroville, CA
    Posts
    1,850
    Pop off valves are for CIS only...so 73.5 could use them but for some reason we didn't have as much problem with the 73.5s as the 74>. I would put one on though if I ever owned a CIS again.
    The original duck tail frames are either steel or aluminum. That alone doesn't verify the originality because from 73 you could buy a duck tail made in California with a steel frame...
    You have to look for other quirks.....
    H
    Reply With Quote Reply With Quote
  3. 03-31-2014, 10:42 AM #3
    Chuck Miller
    Chuck Miller is offline
    Moderator Chuck Miller's Avatar
    Join Date
    Oct 2002
    Location
    Reseda, CA.
    Posts
    12,458

    Lightbulb

    What Harvey said ....... plus this old thread might also help:
    http://www.early911sregistry.org/for...cktail-details

    Cheers
    Chuck Miller
    Creative Advisor/Message Board Moderator - Early 911S Registry #109
    R Gruppe #88
    TYP901 #62
    '73S cpe #1099 - Matched # 2.7/9.5 RS spec rebuild
    '67 Malibu 327 spt cpe - Period 350 Rebuild

    ’98 Chevy S-10 – Utility
    ’15 GTI – Commuter
    Reply With Quote Reply With Quote
« Previous Thread | Next Thread »

Similar Threads

  1. Newb with some Newb questions & a few problems
    By 71911E in forum Technical Info
    Replies: 1
    Last Post: 11-25-2013, 07:47 PM
  2. WTB..... 72'-73' MFI AirBox
    By TB73 in forum For Sale: 911 Parts
    Replies: 4
    Last Post: 03-24-2011, 08:33 AM
  3. FS 911 73.5 CIS Airbox
    By gled49 in forum For Sale: 911 Parts
    Replies: 0
    Last Post: 04-25-2010, 09:34 AM
  4. FS: 65-68 airbox; 69-73 airbox base
    By Shaun 69 E in forum For Sale: 911 Parts
    Replies: 1
    Last Post: 07-06-2008, 07:57 AM

Posting Permissions

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

Forum Rules


Message Board Disclaimer and Terms of Use
This is a public forum. Messages posted here can be viewed by the public. The Early 911S Registry is not responsible for messages posted in its online forums, and any message will express the views of the author and not the Early 911S Registry. Use of online forums shall constitute the agreement of the user not to post anything of religious or political content, false and defamatory, inaccurate, abusive, vulgar, hateful, harassing, obscene, profane, sexually oriented, threatening, invasive of a person's privacy, or otherwise to violate the law and the further agreement of the user to be solely responsible for and hold the Early 911S Registry harmless in the event of any claim based on their message. Any viewer who finds a message objectionable should contact us immediately by email. The Early 911S Registry has the ability to remove objectionable messages and we will make every effort to do so, within a reasonable time frame, if we determine that removal is necessary.