Piston rings glazed

ist crazy , I bought a set Speed pro pistons and Hasting Piston rings, but it did not work.
After 10 hours running on idle , 3 zylinders from the right bank only have 5 bar compression.
My engine builder say that the piston rings /Hasting cast rings / are shit. So I dissambled the engine after 10 hours running and maybe 50 miles, to check everything.
Piston to wall clerance is about .004, zylinders look nice, valves are ok and gasoline stands on them the hole night.
The piston ring gap is 0,5mm , the top ring stands about 120 degree to the 2nd ring.
Cylinder 1,2, 4 have this low compression , cylinder 3, 5,6 ,7 , 8 are between 12 and 14 bar.
My engine builder say that the rings are "galzed" and I should install new rings with better quality.
So my question : Wich rings should I buy ?
I like Mahle very much. Never had a problem with mahle rings. But I do not know exactly how to find the right rings :-/
What do you suggest ?
Thanks
Peter

1/25/1811:49 AM

Original Post

<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...