1. Registration trouble? Please use the "Contact Us" link at the bottom right corner of the page and your issue will be resolved.
    Dismiss Notice

F-134 Exhaust Options

Discussion in 'Early CJ5 and CJ6 Tech' started by GillaFunk, Apr 24, 2020.

  1. Apr 24, 2020
    GillaFunk

    GillaFunk I'm the Dude, so thats what you call me. 2023 Sponsor 2022 Sponsor

    Graeagle Calif...
    Joined:
    Sep 26, 2019
    Messages:
    276
    My CJ is well over due for a new exhaust system as the one now is rusty junk. The engine is a freshly fully overhauled stock F-134, Pertronix, holly 1 barrel carb.

    I’m considering moving up to a Webber 2 barrel at some point, along with headers. Maybe to squeak out a little more performance. It would be nice to have an exhaust system that would allow me to grow. I’m NOT looking at hot-rod, as I know that’s a waste of effort.

    Would an exhaust shop 2.25” high flow exhaust and muffler system be acceptable both now, and still allow me to make a few modifications to accept headers should I go for a little more flow from something like a 2 barrel Weber?

    or should I just stay stock and get an exhaust from Kaiser/Walcks and leave it be.
     
    GillaFunk, Apr 24, 2020
    #1
  2. Apr 24, 2020
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
    Joined:
    Sep 21, 2002
    Messages:
    12,393
    I had a muffler shop put a 2" system on mine, kept the stock manifold. 2" seemed to have made a tiny bit of difference but not enough to matter as far as I could tell. Main reason I had it done was to get the routing as I wanted it to be.
     
    Glenn, Apr 24, 2020
    #2
    fhoehle and GillaFunk like this.
  3. Apr 24, 2020
    GillaFunk

    GillaFunk I'm the Dude, so thats what you call me. 2023 Sponsor 2022 Sponsor

    Graeagle Calif...
    Joined:
    Sep 26, 2019
    Messages:
    276
    Interesting.

    I hadn’t even thought of routing. :banghead:
     
    GillaFunk, Apr 24, 2020
    #3
  4. Apr 24, 2020
    Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    Tantallon, Nova...
    Joined:
    Nov 22, 2003
    Messages:
    8,143
    The problem with a big pipe on a f4 is keeping the exhaust velocity up for scavenging.
     
    Howard Eisenhauer, Apr 24, 2020
    #4
    Jrobz23, GillaFunk, 45es and 1 other person like this.
  5. Apr 24, 2020
    ITLKSEZ

    ITLKSEZ Hope for the best, prepare for the worst

    Spokane Valley, WA
    Joined:
    Aug 13, 2015
    Messages:
    6,701
    This.
    Without head work/porting, a free flowing exhaust isn’t helpful.
     
    ITLKSEZ, Apr 24, 2020
    #5
    GillaFunk and 45es like this.
  6. Apr 24, 2020
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
    Joined:
    Sep 21, 2002
    Messages:
    12,393
    The guy that did mine didn't really want to go with 2" due to rigidity. The bigger the pipe the less flex it has and the hangers can only give a certain amount. He wanted me to stay with the stock size but I convinced him I wasn't going to get too rough with it.
     
    Glenn, Apr 24, 2020
    #6
    GillaFunk likes this.
  7. Apr 24, 2020
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
    Joined:
    Sep 21, 2002
    Messages:
    12,393
    Bottom line is staying stock size would probably be the best choice.
     
    Glenn, Apr 24, 2020
    #7
    Rick Whitson and GillaFunk like this.
  8. Apr 24, 2020
    GillaFunk

    GillaFunk I'm the Dude, so thats what you call me. 2023 Sponsor 2022 Sponsor

    Graeagle Calif...
    Joined:
    Sep 26, 2019
    Messages:
    276
    Thanks to you all, GREATLY!! I appreciate your input and feedback. :beer::bow:

    I REALLLY hate being a noOb.
     
    GillaFunk, Apr 24, 2020
    #8
    tripilio, 45es and Glenn like this.
  9. Apr 24, 2020
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
    Joined:
    Sep 21, 2002
    Messages:
    12,393
    We all were once. :)
     
    Glenn, Apr 24, 2020
    #9
    tripilio likes this.
  10. Apr 24, 2020
    Jrobz23

    Jrobz23 Member

    Northern, WI
    Joined:
    Oct 3, 2016
    Messages:
    942
    How does that 1 bbl Holley carb run?
     
    Jrobz23, Apr 24, 2020
    #10
  11. Apr 24, 2020
    GillaFunk

    GillaFunk I'm the Dude, so thats what you call me. 2023 Sponsor 2022 Sponsor

    Graeagle Calif...
    Joined:
    Sep 26, 2019
    Messages:
    276
    The engine is actually getting overhauled right now by Jimmy Strauss. They talked me out of a Webber (too much carb), but I need adjustability as I’m at altitude, so they recommend the Holly. Unfortunately I was just notified today it will require a lot of linkage, and modification of the manifold and machining of a block, so we’re going to stick with the Solex for now.

    it’s never easy
     
    GillaFunk, Apr 24, 2020
    #11
  12. Apr 24, 2020
    Jw60

    Jw60 That guy 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Sedalia MO.
    Joined:
    Apr 8, 2008
    Messages:
    4,893
    Which 1bbl Holley carb are you working with exactly?
     
    Jw60, Apr 24, 2020
    #12
  13. Apr 26, 2020
    Cowboyjeeper

    Cowboyjeeper Member

    Show low az
    Joined:
    Mar 5, 2019
    Messages:
    473
    Never seen headers for these till last week when this 59 followed me home
     
    Cowboyjeeper, Apr 26, 2020
    #13
  14. Apr 26, 2020
    GillaFunk

    GillaFunk I'm the Dude, so thats what you call me. 2023 Sponsor 2022 Sponsor

    Graeagle Calif...
    Joined:
    Sep 26, 2019
    Messages:
    276
    The engine is currently being overhauled now. Jimmy Strauss is trying to get the Holly to work, but linkage has to be made. He’s leaning towards just using the Solex that came on it.

    I’ll find out what Holly this week. And if it will work. We may skip it
     
    GillaFunk, Apr 26, 2020
    #14
  15. Apr 26, 2020
    GillaFunk

    GillaFunk I'm the Dude, so thats what you call me. 2023 Sponsor 2022 Sponsor

    Graeagle Calif...
    Joined:
    Sep 26, 2019
    Messages:
    276
    No picture
     
    GillaFunk, Apr 26, 2020
    #15
    Cowboyjeeper likes this.
  16. Apr 26, 2020
    tcfeet

    tcfeet Member

    east of west,...
    Joined:
    May 30, 2009
    Messages:
    352
    I put a standard exhaust from KW on mine and like it . Had a solex for 10 yrs and it started acting up, so I put the original YF back
    on after I rebuilt it. I like it much better.
     
    tcfeet, Apr 26, 2020
    #16
  17. Apr 26, 2020
    Jw60

    Jw60 That guy 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Sedalia MO.
    Joined:
    Apr 8, 2008
    Messages:
    4,893
    I had a Holley 1940 (ford falcon i6 sound right?) on my 134 when I pulled it. It would run the highway better and did pretty well offroad with the wishbone float bowl but the carter yf did get 16mpg. Anyway I might have some pics if I can find them. The 2" carb spacer was the biggest challenge
     
    Jw60, Apr 26, 2020
    #17
    GillaFunk likes this.
  18. Apr 26, 2020
    Cowboyjeeper

    Cowboyjeeper Member

    Show low az
    Joined:
    Mar 5, 2019
    Messages:
    473
    This is the best pic i got. [​IMG] Imgur
     
    Cowboyjeeper, Apr 26, 2020
    #18
  19. Apr 26, 2020
    GillaFunk

    GillaFunk I'm the Dude, so thats what you call me. 2023 Sponsor 2022 Sponsor

    Graeagle Calif...
    Joined:
    Sep 26, 2019
    Messages:
    276
    interesting
     
    GillaFunk, Apr 26, 2020
    #19
  20. Apr 27, 2020
    Cowboyjeeper

    Cowboyjeeper Member

    Show low az
    Joined:
    Mar 5, 2019
    Messages:
    473
    ya never seen anything like that for a 4cyl. Can get better pics if anyone wants
     
    Cowboyjeeper, Apr 27, 2020
    #20
New Posts