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  1. #1
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    Default How to prevent the dropping-valve-seat-syndrom ?

    Is there any way to prevent those valves seats from dropping in our engines? I really don't want this to happend to my car, you understand why!


    from what I've read, it looks to be heat related, so I assume that It would be a good idea to keep the engine cooler.. so what would help?

    cooler thermostat?

    hot wiring the fans so we could turn them on with a switch for the hotter days?

  2. #2
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    Default Re: How to prevent the dropping-valve-seat-syndrom ?

    superglue

  3. #3
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    Default Re: How to prevent the dropping-valve-seat-syndrom ?

    There's no need to modify the cooling system, just make sure it works. Test the ECT/fan, make sure to have the right coolent/water mixture, change your coolent with fresh stuff to slow internal corrosion. Yes, a over heated warped head can drop a valve seat, but some times they drop jus cuz they feel like it.
    There might be some usefull info here:
    http://www.cardomain.com/memberpage/419565/4

  4. #4
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    Default Re: How to prevent the dropping-valve-seat-syndrom ?

    Drop it like its hot

  5. #5
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  6. #6
    Senior TEAM Member TravEsD20's Avatar
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    Default Re: How to prevent the dropping-valve-seat-syndrom ?

    I HATE that song. It is SOOOOOOOOO lame. And now everybody quotes it . Ohh well can't escape it I guess

  7. #7
    No Indians, only Zuul. XdrewsiferX's Avatar
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    Default Re: How to prevent the dropping-valve-seat-syndrom ?

    and here a few of my droppings aswell

    best of luck to ya...

  8. #8
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    Default Re: How to prevent the dropping-valve-seat-syndrom ?

    ...the valve seat issue on Vin P engines is due to the PM valve seat inserts.IF you have replacement seats fitted be sure they are of the 'deeper' design and are the latest tempered design.The latest inserts also have a reduced leading edge chamfer wich gives greater contact area seat to head and better heat transfer from the seat.The contact area is the main reason for failure.If you have a head repaired be sure you use a machine shop that is an AERA member and be sure they work to the specs in the AERA Tech Bulletin # TB 1998 (July '02)(HMS Inc is an AERA Member)As a PS Be sure both the intake & exhaust manifolds are fully cleaned.Repeat failures have been experienced when parts of damaged seats/rings become stuck in the intake/exhaust manifolds ...the head is repaired but bits from uncleaned manifolds get back into the engine at start up.

  9. #9
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    Default Re: How to prevent the dropping-valve-seat-syndrom ?

    ...the valve seat issue on Vin P engines is due to the PM valve seat inserts.IF you have replacement seats fitted be sure they are of the 'deeper' design and are the latest tempered design.The latest inserts also have a reduced leading edge chamfer wich gives greater contact area seat to head and better heat transfer from the seat.The contact area is the main reason for failure.If you have a head repaired be sure you use a machine shop that is an AERA member and be sure they work to the specs in the AERA Tech Bulletin # TB 1998 (July '02)(HMS Inc is an AERA Member)As a PS Be sure both the intake & exhaust manifolds are fully cleaned.Repeat failures have been experienced when parts of damaged seats/rings become stuck in the intake/exhaust manifolds ...the head is repaired but bits from uncleaned manifolds get back into the engine at start up.
    Dyam, that's some awsome info. What else is in your head that we should know?

  10. #10
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    Default Re: How to prevent the dropping-valve-seat-syndrom ?

    .....I've been in the industry over 30 years,15 in Ford Powertrain R & D.....so you might expect I'd 'pick up a bit' of info over the years eh!!!

  11. #11
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    Default Re: How to prevent the dropping-valve-seat-syndrom ?

    .....I've been in the industry over 30 years,15 in Ford Powertrain R & D.....so you might expect I'd 'pick up a bit' of info over the years eh!!!
    Your my new best friend.

    Seen any thing cool in your day's?

  12. #12
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    Default Re: How to prevent the dropping-valve-seat-syndrom ?

    ...worked of the Ford of Europe Sierra Cosworth engine prog...Did a bit with Cosworth on F1 engines...Ford Contour in USA (resident proto build eng)...bit on the MTX75 trans prog,had a good friend/fellow eng in Carrol Smith,Jack Roush cursed me a few times during the Contour prog...yeh,been 'round the block' a bit!

  13. #13
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    Default Re: How to prevent the dropping-valve-seat-syndrom ?

    ...worked of the Ford of Europe Sierra Cosworth engine prog...Did a bit with Cosworth on F1 engines...Ford Contour in USA (resident proto build eng)...bit on the MTX75 trans prog,had a good friend/fellow eng in Carrol Smith,Jack Roush cursed me a few times during the Contour prog...yeh,been 'round the block' a bit!
    Are we wasting are time wrenching on these silly SOHC CVH's?

  14. #14
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    Default Re: How to prevent the dropping-valve-seat-syndrom ?

    ...worked of the Ford of Europe Sierra Cosworth engine prog...Did a bit with Cosworth on F1 engines...Ford Contour in USA (resident proto build eng)...bit on the MTX75 trans prog,had a good friend/fellow eng in Carrol Smith,Jack Roush cursed me a few times during the Contour prog...yeh,been 'round the block' a bit!
    Are we wasting are time wrenching on these silly SOHC CVH's?
    Question of the millenia, bro. No matter what you or this guy say, it's all subjective.

    But I'd still like to read a reply on that one!

    Welcome to SPI tuning, Kogbox King! Please stick around--you know your [censored] and we love you for it!

  15. #15
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    Default Re: How to prevent the dropping-valve-seat-syndrom ?

    ...so... from what I understand, there's no secret remedies for this issue unless your tear appart the whole head... so where stuck in something i'd call "the valve-dropping-spi lottery" ...

    so all we can do is to keep our fingers crossed.


 
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