Reply to "Piston rings glazed"

panteradougMember

quote:
Originally posted by George P:
It occurred to me as I was reading the forums today that rings that won’t seal properly are possibly as sign of a crankshaft that is unbalanced or incorrectly balanced.

I thought I'd throw that into the mix.

It is also crankcase vacuum/pressure related. The rings will seal much faster with a negative crankcase pressure of about 10 inches.

It's easier to measure that with a vacuum gauge so simpler to state that in inches but 1 inch of vacuum is approximately 1 psi of negative pressure.

If for some reason the engine has a positive pressure like could happen with a supercharger then the tension that the rings naturally provide will be counteracted by that pressure.

A blow through supercharger system will pressurize the crankcase also.

So make sure that you have a functioning pcv system at least until the engine is determined to be "seated".

1/29/184:17 AM

<ul id="{%=id%}ButtonGroup" class="button-group h-popup-buttons even-button-group even-1">
    <li id="{%=id%}Okay_buttonContainer"><a id="{%=id%}Okay" href="javascript:void(0);" class="button success no-margin-bottom h-alert-modal-ok-button" role="button">OK</a><script type="text/javascript">
        (function() {
            function {%=id%}Okay_click(event, data) {
            {%=id%}Popup.hide();
        }
        
                $('#{%=id%}Okay').on('click', {%=id%}Okay_click);
        })();
    </script></li></ul><a href="javascript:void(0);" class="close-reveal-modal" aria-label="Close Modal">&#215;</a><div class="last-modal-focus focus-utility-element" tabindex="0"></div>
</div>
<script type="text/javascript">
        (function() {
            {%=id%}Popup = new SS.Popup.ModalPopup('{%=id%}');
        })();
    </script>

Skip to main content

Membership Required

Remove From Your Block List

Manage Follow Preferences

Block

Please wait...