View Poll Results: What Compound are you using on the bottom of you DIS

Voters
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  • Silicon Dielectric Grease

    36 31.86%
  • Heat Sink Compound

    62 54.87%
  • Petroleum Jelly

    2 1.77%
  • Super Glue

    6 5.31%
  • Other

    7 6.19%
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Thread: What Compound are ou using on your DIS Module

  1. #1
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    What Compound are you using on your DIS Module

    What Compound are you using on the bottom of your DIS Module?

    If you read the Chilton Manual it says to use silicone dielectric grease
    If you read around here some say to use heat sink compound and others say to use the dielectric.
    Last edited by rickbtbird; 08-13-2005 at 04:46 AM.


    Don't crash into a tree just to avoid a skunk!


  2. #2
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    just 4 people..hmmm..


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  3. #3
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    Are you sure it doesn't say silicone grease? If it says silicone dielectric grease it's WRONG!

    Jeff

  4. #4
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    What ever came in the box when i bought my new one, all i know it was white. Although the though of super glue does sound good.......

    Derek

  5. #5
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    Quote Originally Posted by J57ltr
    Are you sure it doesn't say silicone grease? If it says silicone dielectric grease it's WRONG!

    Jeff
    Well there must be a major discrepancy somewhere but both of my Chilton manuals say the same thing.
    • Book 26760 says on page 2-16 and in figure 41 "Note: Apply a uniform coating of SILICONE DIELECTRIC COMPOUND to the bottom surface of ignition control module assembly". It even shows the blower in the picture.
    • Book 7919 says on page 15-5 under Ignition Module Step 4, "Apply and even coating of silicone dielectric compound to the mounting surface of the module'.

    Does anybody have a FORD service manual to see what it says there? The Hayne’s book doesn't specify any compound.


    Don't crash into a tree just to avoid a skunk!


  6. #6
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    Interesting I have a 26760 Manual.

    Mine shows a pic on page 2-15 Fig. 34

    And on the same page under removal and installation it has:

    To install:

    4. Apply a uniform coat of about 1/32in. (0.08mm) or silicone dielectric compound to the mounting surface of the ignition module.

    This is EXACTLY what mine has and what the heck do they mean by "or"? Did they leave out something?

    I also had a Haynes manual that listed the firing order wrong on the coil pack.

    Just because it is in a book doesn't make it true.

    I don't have any numbers for the thermal resistance of spark plug grease, but since heatsinking it's not it's intended purpose I am going to figure that it is not that great.

    I don't think anyone here has numbers on how hot the DIS module gets on it's own, that is without any external heating sources. Who knows maybe it doesn't need a heatsink afterall.

    Jeff

  7. #7
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    Quote Originally Posted by J57ltr
    Interesting I have a 26760 Manual.

    Mine shows a pic on page 2-15 Fig. 34

    And on the same page under removal and installation it has:

    To install:

    4. Apply a uniform coat of about 1/32in. (0.08mm) or silicone dielectric compound to the mounting surface of the ignition module.

    This is EXACTLY what mine has and what the heck do they mean by "or"? Did they leave out something?

    I also had a Haynes manual that listed the firing order wrong on the coil pack.

    Just because it is in a book doesn't make it true.

    I don't have any numbers for the thermal resistance of spark plug grease, but since heatsinking it's not it's intended purpose I am going to figure that it is not that great.

    I don't think anyone here has numbers on how hot the DIS module gets on it's own, that is without any external heating sources. Who knows maybe it doesn't need a heatsink afterall.

    Jeff
    That's really wacky.. but the first page of my Chiltion says it was published by Haynes North America. Both book have a drawing of the Distributorless V6 system.
    • Ignition System Firring Order: 1-4-2-5-3-6
    • coil pack.. see pic
      (1) (2) (3)
      (5) (6) (4)
    Last edited by rickbtbird; 08-10-2007 at 08:29 PM.


    Don't crash into a tree just to avoid a skunk!


  8. #8
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    It was only on the Haynes manual and it was only one edition that I know of. I threw mine away after I saw it, besided the regualr haynes manual is worthless as tits on a boar hog. The Taurus manual (Haynes) doesn't even mention ABS, which is the only probelm I have.

    There were tons of posts years ago about not being able to get the car running because they were following the order in the book, that's why I brought it up.

    Jeff

  9. #9
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    Quote Originally Posted by rickbtbird View Post
    Well there must be a major discrepancy somewhere but both of my Chilton manuals say the same thing.
    • Book 26760 says on page 2-16 and in figure 41 "Note: Apply a uniform coating of SILICONE DIELECTRIC COMPOUND to the bottom surface of ignition control module assembly". It even shows the blower in the picture.
    • Book 7919 says on page 15-5 under Ignition Module Step 4, "Apply and even coating of silicone dielectric compound to the mounting surface of the module'.

    Does anybody have a FORD service manual to see what it says there? The Hayne’s book doesn't specify any compound.
    Ford Manual page 23-04-07
    Apply a uniform coating of heatsink grease ESF-M99G123A or equivalent to the mounting surface of the DIS module. Install module and tighten bolts to 2.5-3.5 N-M ( 22-31 lb-in).

    -Keith

  10. #10
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    Quote Originally Posted by kpatton View Post
    Ford Manual page 23-04-07
    Apply a uniform coating of heatsink grease ESF-M99G123A or equivalent to the mounting surface of the DIS module. Install module and tighten bolts to 2.5-3.5 N-M ( 22-31 lb-in).

    -Keith
    Thanks, I came to that conclusion myself about a year ago.


    Don't crash into a tree just to avoid a skunk!


  11. #11
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    i used artic silver heat sink compound at my local computer store 8$ for 3.5 grams.

  12. #12
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    I used the cheap heat sink compound from RadioShack, and while it is sold as Heatsink compound the container calls it silicone dielectric compound (though the direction portary it as heat sink compound).

  13. #13
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    There has been a lot of discussion back and forth. The pictures is from my 1993 Ford Thunderbird Service Manual. It saids Dielectric compound. It doesnt say grease so I dont know if there is a diffrence there. I have used Dielectric grease simple because of that. I also have replaced my Dis many times so that may or may not be the reasonRegardless there is evidence that a heat sink compound other than Dielectric might be called for. I always try to have an open mind I would like to know what the 3 voters that voted other used.

    Ken
    Attached Images Attached Images  
    Last edited by kenewagner; 04-10-2008 at 12:14 PM.

  14. #14
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    Dielectric....

    All heat sink compound/grease is dielectric. It is put on for it's ability to conduct heat and grounding of the component.
    Most items that only need heat transfer will have a mylar sheet that fits between the component and the attaching bracket if it is not to be grounded there. there will also be little insulated washers and usuallt plastic screw a to mount it with. So This means that the case of the DIS is also a ground. It also gets hotter than the mounting bracket and it needs a way to get rid of the excess heat.
    Any heat sink grease will work, the silicone one probably conducts heat a little better.
    Lance

  15. #15
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    Huh????? Dielectric grease is an insulator not electrically conductive. Otherwise when you used it on multi-pin connectors you would short out the connector. Heat sink grease is both electrically and heat conductive. (At least Artic Silver and the Ford stuf)
    22 year SC Owner GFP
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