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Technical Update: Does this look bent?

Discussion in 'The Hokey Ass Message Board' started by ZZ Top Chop, Oct 18, 2021.

  1. ZZ Top Chop
    Joined: Aug 12, 2018
    Posts: 534

    ZZ Top Chop
    Member

    I have been nursing the 327 this year in my avatar so I could make it thru the show season. It has blow by, it smokes out the oil filler. I've done a compression test, numbers weren't great (23psi on this cylinder) and it has had a tick. I haven't noticed any loss in power at all. So I pulled the valve cover off and was wanting to see if I had a lifter that needed adjusted. Started the car, it ran for 3 or 4 minutes and died and it will not start at all now. (Maybe unrelated). 20211018_113032.jpg I noticed this valve is off. Thoughts? And if it needs the heads redone, I'm thinking of replacing the motor as I've not been happy with it anyway.
     
  2. squirrel
    Joined: Sep 23, 2004
    Posts: 57,581

    squirrel
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    Can you wiggle the valve retainer sideways? It looks like that valve is not in line with all the others, like the guide is completely gone.
     
  3. ZZ Top Chop
    Joined: Aug 12, 2018
    Posts: 534

    ZZ Top Chop
    Member

    No movement.
     
  4. Johnny Gee
    Joined: Dec 3, 2009
    Posts: 13,503

    Johnny Gee
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    from Downey, Ca

    I have to go with what Jim said as well. Bring the piston all the way up on that cly. and pull valve spring off valve and take a closer look.
     
    lowrd, alanp561 and Tman like this.
  5. ZZ Top Chop
    Joined: Aug 12, 2018
    Posts: 534

    ZZ Top Chop
    Member

    I turned the motor over and as you see on the upstroke of the valve it's not as noticeable. 20211018_120721.jpg
     
  6. Hollywood-East
    Joined: Mar 13, 2008
    Posts: 2,027

    Hollywood-East
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    I would at least pull the pushrod an check straightness, check bumping over if valve is move'n around like squirrel said
     
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  7. ZZ Top Chop
    Joined: Aug 12, 2018
    Posts: 534

    ZZ Top Chop
    Member

    So that's why it won't run with the valve cover off?
     
  8. saltflats
    Joined: Aug 14, 2007
    Posts: 12,892

    saltflats
    Member
    from Missouri

    Does that valve spring look funny at the head surface in the first picture?
     
  9. Looks like the adjusting nut is really down there.
     
    olscrounger, Jibs, 1929rats and 11 others like this.
  10. That was my thinking too. they look like they are way too tight
     
    jimmy six, Boryca, LOST ANGEL and 3 others like this.
  11. 57JoeFoMoPar
    Joined: Sep 14, 2004
    Posts: 6,352

    57JoeFoMoPar
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    23 psi is basically a dead cylinder. Is that an intake valve that you're talking about? Are you getting any popping in the intake? Smoke out of the exhaust? The compression has to be going somewhere, either around the rings or around the valve and guide.
     
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  12. ZZ Top Chop
    Joined: Aug 12, 2018
    Posts: 534

    ZZ Top Chop
    Member

    20211018_124351.jpg I just noticed this, the washer on the rocker arm is busted? How? Something else cause this, what's my next move?
     
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  13. Johnny Gee
    Joined: Dec 3, 2009
    Posts: 13,503

    Johnny Gee
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    from Downey, Ca

    ^^^^^ Valve float
     
  14. Hollywood-East
    Joined: Mar 13, 2008
    Posts: 2,027

    Hollywood-East
    Member

    There's Definitely a snafu there!
     
  15. This speaks volumes.
     
  16. ZZ Top Chop
    Joined: Aug 12, 2018
    Posts: 534

    ZZ Top Chop
    Member

    Exhaust valve. No noticable smoke and seems to run fine. It's off but feels more like timing than anything else
     
  17. bchctybob
    Joined: Sep 18, 2011
    Posts: 5,511

    bchctybob
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    I had three engines that I ran until they just wouldn’t start anymore, it turned out that they just didn’t have enough compression left to function. Sounds like you are there my friend. My SBF had the valves sunk an 1/8” into the head casting thanks to our modern fuels. You just need to bite the bullet and either rebuild the poor old thing or replace it.
     
    rladams65 likes this.
  18. ZZ Top Chop
    Joined: Aug 12, 2018
    Posts: 534

    ZZ Top Chop
    Member

    If I can get it going for just another month or so it would be great but I did make it this far. Looking at a Blueprint motor
     
  19. squirrel
    Joined: Sep 23, 2004
    Posts: 57,581

    squirrel
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    just buy a new rocker arm at the parts store, it will have a new pivot ball. Put it on, adjust the valve, see how it does.
     
  20. Johnny Gee
    Joined: Dec 3, 2009
    Posts: 13,503

    Johnny Gee
    Member
    from Downey, Ca

    [​IMG]
     
  21. ZZ Top Chop
    Joined: Aug 12, 2018
    Posts: 534

    ZZ Top Chop
    Member

    I'll try that, thank you.
     
  22. ZZ Top Chop
    Joined: Aug 12, 2018
    Posts: 534

    ZZ Top Chop
    Member

    HAHA!
     
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  23. ZZ Top Chop
    Joined: Aug 12, 2018
    Posts: 534

    ZZ Top Chop
    Member

    Push rod is straight, I rolled it across our quartz counter top, shhh, don't tell my wife.
     
    raven likes this.
  24. ZZ Top Chop
    Joined: Aug 12, 2018
    Posts: 534

    ZZ Top Chop
    Member

    So I'm waiting on a rocker arm now as I live on a remote island called Southern Indiana. Not covid related its always been this way since we moved here.
     
    alanp561, -Brent- and scotty t like this.
  25. Can't see how the push rod could have been bent and pushing the rocker to one side,....with guide plates ;-)
     
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  26. Hollywood-East
    Joined: Mar 13, 2008
    Posts: 2,027

    Hollywood-East
    Member

    Possible in valley, Below guide plate...
    But apparently not an issue here... And the plot thickens..
     
    Last edited: Oct 18, 2021
  27. Budget36
    Joined: Nov 29, 2014
    Posts: 14,514

    Budget36
    Member

    Seems the rocker moved through the lift of the cam by looking at the pics.
    As noted the broken ball is probably issue. But take a bent wire, run it through a hole, it will lean/move to a different spot as it goes higher and lower.
    I think that’s why the suggestions to look at the push rod were warranted.
     
  28. Of course everything should be looked at when it's apart. But once he loosens the lock nut it would be apparent where the trouble lies. Top of the rocker where it belongs, with the guide plate ...Bottom, not so much so.
    I would guess someone along the line , trying to eliminate a clickedy -clack, ran the lifter plunger down to where it was acting like a solid but with no lash ... Rocker at an extreme angle , stress on the ball...crack!
    Now we have to figure out what's wrong with that one lifter...or cam lobe. ;-)
     
    Johnny Gee likes this.
  29. ZZ Top Chop
    Joined: Aug 12, 2018
    Posts: 534

    ZZ Top Chop
    Member

    I've had the car for 4 yrs, valve cover has never been pulled. Motor was rebuilt (whatever that's worth) before I acquired it and I'd guess it has less than 1000 miles on it. I got the rocker off, I don't see anything other than the broken washer. But I can't see that being the only issue but a symptom of something else.
     
  30. sdluck
    Joined: Sep 19, 2006
    Posts: 3,294

    sdluck
    Member

    Rocker stud coming out of the head or the cam is going bad.
     
    Tickety Boo and Hotrodmyk like this.

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