Pulled oil pan, found a surprise

Discussion in 'The Bench' started by 68Rivi_In_Cali, Mar 29, 2020.

  1. 68Rivi_In_Cali

    68Rivi_In_Cali Well-Known Member

    Finally got the 4 speed swapped in and getting the 3.42 install this next Tuesday. Figured I would finally fix that oil pan leak I've had for a while.

    Pulled the pan and noticed these shavings...... I'm guessing it's either cannot rod bearing material.
    The chunky stuff is most likely engine crap from wrestling the pan out.
    -_-

    The engine runs great and oil pressure is @ 55psi cold and 25psi warm

    I did install a cam last year but followed the break in procedure etc.


    I'm guessing it might be a ticking time bomb now.

    I'm going to most likely need another 350 or a 455. Going to button it back up since it has to drive over to the rear end shop Tues
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  2. sean Buick 76

    sean Buick 76 Buick Nut

    Button it back up and drove it while you save up for a rebuild or rebuild another core.
     
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  3. 68Rivi_In_Cali

    68Rivi_In_Cali Well-Known Member

    Will do, a buddy of mine has a 455 with 430 heads I might be getting soon. I do have the team teds and motor mounts ready as well.

    I'll button it back up and drive it around.
     
  4. Golden Oldie 65

    Golden Oldie 65 Well-Known Member

    Heck, it might surprise you how long it might still last after you clean out the pan and put fresh oil in it. Many years ago a friend asked me if I had any 350 Chevy engine sitting around that I didn't need. He needed one for his dump truck. I told him all I had at the time was 2 bolt main 350 out of a `72 Chevelle with 215,000 miles on it that was stuck when I got it and after a week of soaking with Marvel Mystery Oil I finally broke it loose and got it running. He actually took it and it ran for years in that old dump truck. You never know.
     
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  5. yachtsmanbill

    yachtsmanbill Well-Known Member

    The black stuff looks like vintage Permatex. Didja try a magnet on the shiny stuff? Id pull #7&8 rod caps off for a look... If you have a dial indicator check the thrust on the crank for a worn main. ws
     
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  6. 68Rivi_In_Cali

    68Rivi_In_Cali Well-Known Member

    I gave it a pass but it didn't stick, I'm at guessing it might be some shavings from the aluminum rockers? Before I upgraded the heads/ cam , one of the nylon buttons had broken off and the rocker was on moving on the shaft side to side. I rebuilt the shafts when I did the heads and cam, could be left over from the break in or when the nylon button broke. The thing is that I ran break in oil, flushed it , ran some high zinc oil, and flushed it after 500 miles again. Hmmm maybe it didn't completely flush out since I did it on car ramps not level ground.

    I ended up buttoning it up, I wasn't able to remove the caps and measure.
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  7. yachtsmanbill

    yachtsmanbill Well-Known Member

    Im not too familiar with 350's but I thought the plastic rocker buttons were only used on the stamped steel rocker arms. OOPS! Wrongo! My 455 when I took ownership had 5 bad rods and 1/2 dozen missing buttons; that caused the push rods to rub in the holes in the heads pretty severely...The seller said "It has a rod knock"... yeah, right!

    The early 60's V6's and smaller V-8s had the torsion springs. ws

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  8. 68Rivi_In_Cali

    68Rivi_In_Cali Well-Known Member

     
  9. philbquick

    philbquick Founders Club Member

    That broken chunk looks like aluminum, maybe part of an old timing gear.
     
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  10. HotRodRivi

    HotRodRivi Tomahawks sighted overseas

    Whats your distributer gear ? Bronz or other? Did you at least throw in some super duper neodenium magnets in the pan? Was a bunch of crap in tbe pickup? Onlt thing that usually makes chunks without knocking is a bronze dist gear.
     
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  11. yachtsmanbill

    yachtsmanbill Well-Known Member

    The real surprise! ws

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  12. 68Rivi_In_Cali

    68Rivi_In_Cali Well-Known Member

    I'm running the original distributor with a points eliminator kit.

    I will have to order some magnets or at least a magnetic oil pan plug.

    The pick up screen had some specs of crud but definitely don't look bad all.

    I did replace the old timing gear for a double roller when I did the cam swap.

    I'm hoping it isn't anything too serious. I will run fresh oil tomorrow after the RTV sets. I used a bit just on the pan side. I'll run that oil for a couple of miles then inspect it.

    I'm thinking of cutting the oil filter open as well to double check.
     
    dan zepnick likes this.
  13. 68Rivi_In_Cali

    68Rivi_In_Cali Well-Known Member

    Holy crap, that's definitely a surprise
     
  14. yachtsmanbill

    yachtsmanbill Well-Known Member

    You may want to pull the fuel pump and have a look. Theres been some chatter about the arm rubbing on the double row chain; at least on 455's. I checked mine and there wasn't any rub at all. I think the naysayers dont check their work, but hey, Ive only been at this for 50+ years. ws

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    Last edited: Mar 30, 2020
  15. HotRodRivi

    HotRodRivi Tomahawks sighted overseas

    Lookin tubular 68 Rivi. Except thats not a 68 Rivi. I was about to ask ware you find tubular a arm
     
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  16. john.schaefer77

    john.schaefer77 Well-Known Member


    Where did you get a crank turning socket for a 455 ?
     
  17. alvareracing

    alvareracing Platinum Level Contributor

    John, I purchased a Pontiac size socket from Summit and had my machinist openned it up on the lathe to fit the BBB. It makes it easy to use a cam degree wheel with the use of the double nuts to hold it place.
    Fernando
     
    john.schaefer77 likes this.
  18. Bens99gtp

    Bens99gtp Well-Known Member

    I made out of another make that I had the inside opened up to fit
     
  19. yachtsmanbill

    yachtsmanbill Well-Known Member

    Theres an advantage to having a lathe! I used a BBC(?) unit and made a sleeve for it. The crank and cam was mounted along with a naked piston and rod for measuring. That aluminum unit wouldnt turn a complete rotating assembly but a bare #1 I was OK with... I went with the BBC so if If I bored the unit I didnt lose any keyway depth. Apples and Oranges.. Besides, itll still fit the BBC if it ever comes to that. ws

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  20. 68Rivi_In_Cali

    68Rivi_In_Cali Well-Known Member

     

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