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  1. #1
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    Default Glyptal engine paint

    Hey guys going to start assembling my engine very soon now is the glyptal paint worth the cost to paint out the inside of the valley ?

  2. #2
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    hi
    Just a thought . Your block thoroughly very clean yes? Many race cars use it . But the motors are being stripped and inspected a lot. What would concern me is where does it go if it flakes off . For it to work well needs good adhesion .

    In saying that there are a few on the site that do paint internally . So u need some long term experiences with it.

  3. #3
    427
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    Thumbs down from me. They never came painted from the factory..just saying..

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    Too risky, and no documented reward for doing it.... deburr it a bit and call it good..

  5. #5
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    Ok ill save the $90 and put it else where , blocks already cleaned up castings

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    Quote Originally Posted by rielly1978hzwagon View Post
    Ok ill save the $90 and put it else where , blocks already cleaned up castings
    You are good to go... $90 can go for something that will actually make a difference...

    Im sure someone will argue it though and say Peter Brock did it lol

  7. #7
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    Quote Originally Posted by paulzig View Post
    Too risky, and no documented reward for doing it.... deburr it a bit and call it good..

    Yes smooth up any casting dags , radius any oil returns

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    Iím far from an engine guru, actually just a diesel mechanic but Iíve seen a number of big dollar car and boat engines pulled down and nothing is painted inside them.

    Itís a street car, do some de-dagging, smooth a few areas up and run with that mate.

  9. #9
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    Quote Originally Posted by paulzig View Post
    Too risky, and no documented reward for doing it.... deburr it a bit and call it good..
    I use it on my race engines....







    LP and other Holden race engine builders use it too
    (LP suggested I use it.. he does)





    and no it does NOT flake off, ....remember originally it was developed
    for use inside very large electric motors and generator and alternator armartures
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  10. #10
    Do you ever leave? paulzig's Avatar
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    Thats an appeal to authority saying LP uses it, actual benefits are not documented...

    I can name leaders in the sport that dont so which one do you believe, until there is evidence of it working actual numbers I am afraid it seems like a lot of effort for no reward...

  11. #11
    AED
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    We never do that on any engines, I see no benefit doing it, when the casting has an oil coating on it the rest of the oil slides on by. I only see a situation where something could go wrong and we already have enough of those things going on in race engines.
    But even with that said i have never seen an engine that the paint has come off either. Sure makes it look purdy thou.

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    Quote Originally Posted by paulzig View Post
    actual benefits are not documented...
    They are documented, well depending if you leave it as cast or smooth it out.
    Polishing the drain back area's removes surface area and some integrity along with that. I do remember an engineer at Holden was in utter disbelief when he seen a Holden engine with a polished valley at one of the race teams.

    Gm quite likely may have issued a directive to the race teams to cease the practice.

  13. #13
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    Quote Originally Posted by HQ 368 View Post
    They are documented, well depending if you leave it as cast or smooth it out.
    Polishing the drain back area's removes surface area and some integrity along with that. I do remember an engineer at Holden was in utter disbelief when he seen a Holden engine with a polished valley at one of the race teams.

    Gm quite likely may have issued a directive to the race teams to cease the practice.
    Where is it documented and proven that painting the valley in Glyptal has any benefit vs just aiding drainback by use of a grinder on drainback holes? I am not referring to a polished valley, who would spend the time to do that either?

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    I was told before that it is recommended to bake it after applying this paint.

  15. #15
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    Quote Originally Posted by jeraldu View Post
    I was told before that it is recommended to bake it after applying this paint.
    It costs money, you have to bake it... Save your money/time and spend it on something that will actually do something...

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