6.1L 6.1L Intake manifold bolts.

Discussion in 'Challenger SRT8 Engine & Performance Modifications' started by BBBAD345, Nov 3, 2020.

  1. BBBAD345

    BBBAD345 Full Access Member

    Posts:
    83
    Likes Received:
    29
    Joined:
    Feb 2, 2020
    Location:
    USA
    When I removed my 6.1L intake, all of the original plastic bushings were broken. The 6.1L intake manifold bolts are not avail any more from Mopar from what I can see, and all of the aftermarket bolds do not have the bushing or a proper shoulder from what I have seen either. This is how I solved the problem.

    Fig 1. I bought 11 of these metric bushings from Ace Hdwr for $0.30 ea.

    Fig 2. Use a 6mm threaded rod or bolt to roll the bushing on in order to make it easier to cut (use a glove). Cut the bushing in half as shown.

    Fig 3. Test fit bushing on bolt.

    Fig 4 & 5. Install the bushing into the manifold.


    001 Bushings to use.jpg 002 Cut bushings.jpg 003 Fit bushing on bolt for proper fit.jpg 004 Install bushing into intake mnfld.jpg 005 Correct installation.jpg
     
    baccaruda and Fixdaserver like this.
  2. 2017 Redline HC

    2017 Redline HC 2021 Durango RT

    Posts:
    1,105
    Likes Received:
    321
    Joined:
    Apr 18, 2019
    Location:
    Southern Ontario
    Looks to be a good work around.
     
  3. Fixdaserver

    Fixdaserver New Member

    Posts:
    2
    Likes Received:
    1
    Joined:
    Jan 27, 2025
    Location:
    Jupiter, fl
    This is exactly what I was searching for today. Thanks for posting.
     
  4. Cloverdale

    Cloverdale Full Access Member

    Posts:
    765
    Likes Received:
    215
    Joined:
    May 30, 2020
    Location:
    Cloverdale
    Original bolts could well be torque to yield (TTY) due to securing aluminum manifold and may need to be replaced.
     
  5. Niles

    Niles Full Access Member

    Posts:
    242
    Likes Received:
    71
    Joined:
    Jan 3, 2023
    Location:
    Huntsville, AL
    You may be right, but that is unlikely as the torque is less 108 in-lbs. That is less than 10 ft-lb and not enough to distort the bolt.
     
    Fixdaserver and Sexy Blue like this.
  6. Cloverdale

    Cloverdale Full Access Member

    Posts:
    765
    Likes Received:
    215
    Joined:
    May 30, 2020
    Location:
    Cloverdale
    There are a variety of potential issues involving Dodge intake manifold bolts through a variety of current displacements. Torque spec on the video application is also less than 10 ft lbs. I've recently broken a reused bolt of similar capacity just snugging it up (thinking it unlikely while applying such a minimal amount of torque).

    Bing Videos
     
    Last edited: Jan 29, 2025
  7. Niles

    Niles Full Access Member

    Posts:
    242
    Likes Received:
    71
    Joined:
    Jan 3, 2023
    Location:
    Huntsville, AL
    Galling can occur more frequently in some metals. I think aluminum and stainless steel are more prone to it than carbon steel. That can make it easy to break bolts. No pun intended, but I'm a little rusty in my metallurgical knowledge.
     
  8. Fixdaserver

    Fixdaserver New Member

    Posts:
    2
    Likes Received:
    1
    Joined:
    Jan 27, 2025
    Location:
    Jupiter, fl
    I ended up using white rubberized screw end caps. They fit perfectly over the intake manifold 6mm course thread bolts and are the proper diameter for the manifold collared bolt holes.
     
    Sexy Blue likes this.
  9. Cloverdale

    Cloverdale Full Access Member

    Posts:
    765
    Likes Received:
    215
    Joined:
    May 30, 2020
    Location:
    Cloverdale
    I've read reports of the 5.7 intake manifold bolts working themselves loose and that Dodge discontinued use of the 6.1 aluminum intake design due to a propensity to overheat compromising it's (and it's bolts) integrity (ability to remain sealed and to be resealed). My metallurgic knowledge likely falls well below yours.
     
    Last edited: Jan 31, 2025
  10. HellKitten

    HellKitten Full Access Member

    Posts:
    345
    Likes Received:
    149
    Joined:
    Sep 16, 2020
    Location:
    NH
    This is how the engineers get you to purchase another vehicle after 5 years or so .