Reply to "Smoke from ZF Inspection Window during Engine Break-In"

FYI:

With an estimated cam break-in speed of 2,000 rpm, 164 tooth flywheel, and 10 tooth (estimated) starter pinion, the starter's OUTPUT SHAFT would be turning 32,800 rpm. Note that that is the speed of the OUTPUT SHAFT.

Factoring in the starter's internal gear reduction being driven in "reverse", the starter's armature would likely be rotating at over 100,000 rpm.

At 3:1 gear reduction: 98,400 rpm

At 4:1 gear reduction: 131,200 rpm

If the starter has a 9 tooth pinion, the rpm would be even higher. It's lucky that the starter didn't explode !!

John

8/8/232:52 PM

<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...