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Valve Intake Adjust Without Removal Of Side Valve Cover?

Discussion in 'Early CJ5 and CJ6 Tech' started by GillaFunk, Aug 28, 2022.

  1. Aug 28, 2022
    GillaFunk

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

    Graeagle Calif...
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    This is my first endeavor into engine work, so please be patient.

    The head gasket blew on my F-head. Getting the intake valves adjusted normally requires removal of the side valve cover. Given my Clifford header, that is going to be a a bit inconvenient, as I REALLY don't want to add that sequence to the process.

    Is there an effective way of adjusting intake valves WITHOUT removing the side cover? If so, please point me in the right direction. Ive searched and cannot find an alternative. Im not sure I can fit the cover out from under the header.

    [​IMG]
     
    jeepstar likes this.
  2. Aug 29, 2022
    scoutpilot

    scoutpilot Member

    Asheboro, NC
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    The intake valves are on top, under the top valve cover. You will have to remove it and the side cover to adjust the exhaust valves.
     
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  3. Aug 29, 2022
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2022 Sponsor 2021 Sponsor 2020 Sponsor

    Hills of NH
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    Yes. Remove the top cover... also known as the intake valve cover.
     
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  4. Aug 29, 2022
    jeepstar

    jeepstar Well-Known Member 2022 Sponsor 2021 Sponsor 2020 Sponsor

    Sheboygan
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    I REALLY like those headers....
     
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  5. Aug 29, 2022
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2022 Sponsor 2021 Sponsor 2020 Sponsor

    Hills of NH
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    ...except for how they get in the way of adjusting the EXhaust valves. :lol:
     
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  6. Aug 29, 2022
    GillaFunk

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

    Graeagle Calif...
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    Damn. Alright. I guess I’ll see about getting this side cover off. Feck
     
  7. Aug 29, 2022
    Arnold Layne

    Arnold Layne Member

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    Take the top cover off, get the cylinder you are adjusting at TDC of the compression stroke and adjust the intake valve for that cylinder, then roll the engine 1/2 of a turn and do the next one in the firing order. No reason to take that side cover off. Am I missing something?
     
  8. Aug 29, 2022
    GillaFunk

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

    Graeagle Calif...
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    I would assume guessing 1/2 of a turn isn’t a very precise measurement and would ultimately have a negative effect on engine performance
     
  9. Aug 29, 2022
    Arnold Layne

    Arnold Layne Member

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    I did not mention guessing at anything. 1/2 turn is 180 degrees. You fire one cylinder every 180 degrees. If you set one cylinder at TDC, the next cylinder in the firing order will be 180 degrees behind it. If you want you can set the intakes while it is running.
     
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  10. Aug 29, 2022
    GillaFunk

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

    Graeagle Calif...
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    Ahhhhh. Now I get it.
    See, I told ya….this is new to me. I understand pieces, but not the work as a whole.
     
    Last edited: Aug 29, 2022
  11. Aug 29, 2022
    Arnold Layne

    Arnold Layne Member

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    Yeah, the only reason to remove the side cover to set the intakes is so you can tell what position the valves are in, but it's easier to determine that from the outside.
     
  12. Aug 29, 2022
    jpflat2a

    jpflat2a what's that noise?

    Riverside CA
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    Get the service manual and read it.
    Covers everything you've asked about.
     
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  13. Aug 29, 2022
    GillaFunk

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

    Graeagle Calif...
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    I have the 1977 re-printed Jeep universal service manual. Section D-107. Page 69. Nowhere in or around the section or in the tune-up area is there information regarding valve adjustments without removing the side cover.

    I have been last two evenings researching online in this forum, other CJ forums, and a short resources online. I was unable to discover anything specifically useful.

    If you have other information on this topic, I’ll be welcome to hear it. Thus far it sounds like I don’t need to remove the side cover given the information Arnold has provided.
     
  14. Aug 29, 2022
    Jw60

    Jw60 Airbender and interrupter of the light guard. 2022 Sponsor 2021 Sponsor 2020 Sponsor

    Sedalia MO.
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    Eh... if you didn't have the head off and were just "checking" I could see rolling it over and making sure they are even but having the head off for the gasket is a pretty good opportunity to pull the header and take your time. Personally i'ld go ahead and pull the fender so it's not as painful on the ribs. double check everything and it'll be singing like a sewing machine before you know it.
     
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  15. Aug 29, 2022
    GillaFunk

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

    Graeagle Calif...
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    Thanks for your clarification. I'll just see how things pan out and do my best.

    This is the manual I am using.
    Having wrenched a little on motorbikes before, I take the manual apart, insert each page into a sheet protector, use dividers for each section, and re-assemble the manual into a binder. Thus protecting the pages from tears and oil stains.
    Its a time consuming activity, but I like to do things methodically, and the right way. Its also easier using the manual this way, instead of in a bound book.

    If I need to supplement this manual with another, I do have the Chiltons and Haynes manuals, but those never seemed to be all that complete compared to this Jeep version. Apparently I need to look for more.

    [​IMG]

    [​IMG]

    [​IMG]

    I've enjoyed the learning process, and getting the engine and component colors more in sync has almost made this re-build worth while. Black and yellow were bad choices.
    [​IMG]

    Chrysler Green, Ford Grey, and some hose loom may not be historically accurate, but it certainly pops.
    [​IMG]
     
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  16. Aug 29, 2022
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    Since you mentioned L-head are you confusing the 2 different engines? Yours is the F-head and no you don't need to remove the side cover for the intake valves.
     
  17. Aug 29, 2022
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    I believe you are overthinking this endeavor and trying to absorb too much information.
     
  18. Aug 29, 2022
    GillaFunk

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

    Graeagle Calif...
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    Oh no, I definitely know the two motors are different. Similar, but not identical.

    Overthinking is certainly one of my flaws. I just hate wasting peoples time and energy on subject matter that is already explained and available using a Google search.
     
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  19. Aug 29, 2022
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    This stuff is pretty simple when compared to modern engines. When adjusting the valves take your time and go back over and recheck your adjustments.
     
  20. Aug 30, 2022
    Oldpappy

    Oldpappy A.C. Fults - Curmudgeon at large 2022 Sponsor 2021 Sponsor

    East Tennessee
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    Will be installing the head on an F-head later today. The engine was running very good, and had good compression, but was sucking oil down the intake valve guides. I won't be touching the exhaust valves since I adjusted them recently, but will of course be adjusting the intakes.

    You mentioned earlier that the first time around you didn't know about re-torquing the head bolts, and you are correct this contributed to the gasket failure. I torque the bolts to 70 lbs on a cold engine. On initial start up I run it until it is hot, then remove the carb and valve cover to check the torque on all of the bolts a second time. I check it a third time after putting some miles on it.
     
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