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Cadillac Seville / Cadillac Eldorado Forum Discussion, Intake Valve Problem! in Past Cadillac Vehicle Discussion; I guess I should confess to being the lout that caused all the trouble - it seems when I called ...
  1. #61
    basscatt's Avatar
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    Re: Intake Valve Problem!

    I guess I should confess to being the lout that caused all the trouble -

    it seems when I called the OP out about his BUTT DYNO -
    that just sent him and his little buddy OVER THE EDGE -
    -----------------
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  2. #62
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    Re: Intake Valve Problem!

    I have been following this post in the dark, but I must come out and say wow lol...
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  3. #63
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    Re: Intake Valve Problem!

    Quote Originally Posted by basscatt View Post
    I guess I should confess to being the lout that caused all the trouble -

    it seems when I called the OP out about his BUTT DYNO -
    that just sent him and his little buddy OVER THE EDGE -
    -----------------
    If that's all it took... jeez...
    I was interested in what went wrong but if him and his buddy are gonna get their shorts in a wad I will repeat my Smiley if ness.
    It wasn't meant to be offensive, but people who live in glass houses shouldn't throw stones.
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  4. #64
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    Re: Intake Valve Problem!

    Quote Originally Posted by rewindsts View Post
    I had an old northstar enngine that was so built up i poured, and cleaned, and took each lifter check and polished with scotchbrite and 400 sandpaper and the heads are working like brand new
    I suggest you read up on just what Scotchbrite does to engine guts, what is posted about it up in the Cadillac Technical Archives, and why most automobile manufacturer service manuals caution against its use around engines. Same applies to "400 grit sandpaper".

    FWIW, Those cam follower bucket (lifter) faces are hardened to a depth of a few thousandths of an inch. Wear through, or partially through, that hardening and engine life is drastically shortened.

    Hint: Scotchbrite contains aluminum oxide crystals, one of the most abrasive substances known to man. Google it and go from there.

    Engine builders - - - NEVER use Scotchbrite to clean any engine part or anything that has tight clearances. NEVER. Hang your hat on that. (Don't believe a word I post - Google all the above from any number of cam grinders, rebuild shops, speed parts manufacturers.)
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  5. #65
    rewindsts is offline Cadillac Owners Member
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    Re: Intake Valve Problem!

    I not talking about using them like a sponge, those surfaces on those lifters are extremely hard, if you've ever hand ground a ring, old school, there is a technique to resurfacing a flat part and after polishing soaking and cleaning there is no alum/ox left on that part. I'm just saying and seconds of cleaning with a scotchbrite will not wear through a surface, and a scratch can be much more destructive to your cam. Alternative, very expensive lifter replacement. I have seen lifters last a hundred thousand miles with this technique. They word in the manual is caution as with everything in a machine. Side note: if lifter is heavily scored throw it away.

    ----------

    also my bad, 1500 grit, sorry about that.
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  6. #66
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    Re: Intake Valve Problem!

    Quote Originally Posted by rewindsts View Post
    I'm just saying and seconds of cleaning with a scotchbrite will not wear through a surface
    You are totally missing Sub's point.
    http://www.cadillacforums.com/forums...ite-never.html
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  7. #67
    rewindsts is offline Cadillac Owners Member
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    Re: Intake Valve Problem!

    Not really, I never ever use scotchbrite for cleaning surfaces on motors, when you do the lifters, you knock down the high point with scotchbrite, polish with 1500, with the paper on a piece of glass, then soak in parts cleaner, then soak in oil. I promise there is no residue left. Being meticulous is the key. I concur that clean head surfaces or blocks or rings or anything else with scotchbrite is a bad idea and I appreciate that you should warn people about the dangers of scotchbrite. My family has been rebuilding engines since the 1930's and there is a couple different levels of rebuilding, budget no budget. I will be careful of riding against conventional wisdom in the future. Thanks
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  8. #68
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    Re: Intake Valve Problem!

    Gotcha Guess it was I who misunderstood you.
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  9. #69
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    I use scrotch brite all the time as long they're going to be cleaned thoroughly also. Problem is when people use em to clean off gaskets & just re-assemble, that'll bite ya in the butt every time.
    I remember a guy in high school cleaned internal engine parts with gojo type hand cleaner & assembled without cleaning it off... engine lasted almost 5 mins I think. Rings froze to cylinders and we could not get the pistons out without breaking the pistons. His dad had advised him to do it... scary part was he was a mechanic somewhere.
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  10. #70
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    Re: Intake Valve Problem!

    Quote Originally Posted by RippyPartsDept View Post
    Jim,

    what's the big deal?
    Piling on by trolls. I don't have the time for this, and I don't want to have unpleasant posts in my name on the WWW.

    ----------

    Quote Originally Posted by RippyPartsDept View Post
    This is ridiculous ...

    1) the smilie rodnok posted is built into the forum
    2) i have no clue what you mean by "FINGER"

    this thread could possibly win some sort of award for the most benign thread to freak someone out and piss them off

    ....

    while you and I are professionals you can't expect everyone else to be held to our standards
    lighten up a bit and don't take everything so personally
    There was a post by basscat with an obscene graphic, a smiley flipping the bird, that apparently was edited or removed.

    ----------

    The head is off, and the culprit was found. It was a piece of goopy carbon wrapped around an intake valve, including a big piece blocking the sealing surface of the intake valve. The car was driven for a number of weeks after a March 6 leakdown test that revealed the intake valve leakage, verified the rings and exhaust valves were OK, etc.

    The car seemed to be very gradually getting better by itself. By this week, when the head was off, 94% alcohol wouldn't visibly leak out of the combustion chamber. Given time, the problem probably would have gone away by itself.
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  11. #71
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    Re: Intake Valve Problem!

    thanks for the update ... good to know

    Chris Heath (RippyPartsDept) is an ASE Certified GM Parts Consultant at
    Rippy is a Cadillac, Hummer, Saturn & Saab dealership - family owned and operated in Wilmington, NC since 1946
    We offer all forum members deals on parts and freight - e: parts@rippyautomotive.com ph: 800-RIPPY-22
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  12. #72
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    Re: Intake Valve Problem!

    Glad you found the problem.

    Post #38, second paragraph - shot in the dark, but turns out it hit the mark.
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  13. #73
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    Re: Intake Valve Problem!

    Still don't care... After you're attitude and snarkyness towards members here for no good reason, I'd just assume take a ten yr olds advice on fixing a Northstar. I figure there's a 50-50 chance you're lying and just another TROLL yourself with an axe to grind.
    Good Day.
    basscatt and basscatt like this.
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  14. #74
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    Re: Intake Valve Problem!

    That's not the case.
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  15. #75
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    Re: Intake Valve Problem!

    If anyone would like to follow the further adventures of the two movie stars in this mutual admiration thread, go to the other Cadillac discussion website.
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