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Thread: Bore Glazing

  1. #11
    Join Date
    Aug 2002
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    227

    Default Re: Bore Glazing

    its a a so called prob caused by letting your engine tick over (if you believe the crusties)
    but i have only ever addressed the situation when fitting new rings or pistons to a used bore or cylinder and i have "busted the glaze" ie lightly honed the bore with some emery or a dedicated tool, this removes some of the finish on the bore and allows the new rings and piston to rub against fresh metal to "run themselves in"
    stu


  2. #12
    Join Date
    Jun 2001
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    2,043

    Default Re: Bore Glazing

    tend to agree with you : have seen many examples of bore -glazing on 2 & 4 stroke m/cycle engines.....v.few of which were left ticking over or indeed ever used lightly at all.




  3. #13

    Default Re: Bore Glazing

    Its the effect on ones eyes when people start talking about tribology of interfaces and breakdown of detergent layers in varnished cylinders.


  4. #14

    Default Re: Bore Glazing

    ta
    i really think that bore glazing ( if there is such an animal) is a natural result of the wearing process and is something that is dealt with when the engine is rebuilt. and in fact if we werent all skinflints or could afford to rebore or recylinder (we havent talked about liners yet in the forum) it would not be an issue.
    if we want to talk about premature wear caused by running the engine at a too low a temperature then we can open the debate again.
    s


  5. #15
    chippie is offline Registered User
    Location : Northland New Zealand
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    Aug 2001
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    1,185

    Default Re: Bore Glazing

    That comment to leave the filter loose seemed a strange one to me ,but on looking at their site they have had plenty of experience. I think it was a bit like taking the filler cap off the old motorbikes to make sure the oil is pumping.They did say to make sure the engine cant start.
    Did you take their test? I surprised myself at how well I did.


  6. #16
    charles_reed's Avatar
    charles_reed is offline Registered User
    Location : Home Shropshire 6/12; boat Greece 6/12
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    Default Re: Bore Glazing

    Andy,
    Sure you weren't seeing the effect of Castrol R.

    The burnt castor oil used to stick to everything, especially the valves on JAP 500 engines.
    We used to have to strip and "glaze-bust" every 3rd race.

    Ah! but the smell...


  7. #17
    Join Date
    Sep 2001
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    18,524

    Default Re: Bore Glazing

    Formula junior? Or?

    If I agreed with you we'd both be wrong.

  8. #18

    Default thumble thumbs

    yeah but they are a bit old fashioned, it was like going back to practical motorist in the 60s.
    can you imagine the ford production line or whoever, when the moment of triumph comes as the car gets to the end of the line and the key is turned to start her up and drive her awy to the despatch compound, horny handeded george with his greasy cap tilted to one side, hang on a minute fred, give her a bit more !! thats it, oil here, hang on a mo while i tighten the filter, ok let her go!!! taraaaah
    i donrt think so and it shouldnt be any different in the real world of marine engines. if you put her together proper, prime the pump as you are assembling as well as liberally oiling everything (as advised etc) and putting a bit of oil in the filter, no probs.
    s


  9. #19
    charles_reed's Avatar
    charles_reed is offline Registered User
    Location : Home Shropshire 6/12; boat Greece 6/12
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    Default Re: Bore Glazing

    Started as Formula III and then became Formula 500.

    We used to race a JAP-engined Keift, which was quite competitive until people started fitting double-knocker Norton engines - after that it degenerated into a pocket-book competition.

    I then moved on to Formula 750, raced against a very dodgy chap called Chapman.


  10. #20
    Join Date
    Sep 2001
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    18,524

    Default Re: Bore Glazing

    Yes, of course I remember now, especially the OHC nortons, they make new norton engines now, for MC racing did you know that? Along with BSA goldstar engines in Holland.

    If I agreed with you we'd both be wrong.

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