Reply to "Bad valve spring day.."

panteradougMember

The gauge has to go on the air intake side valve cover. The opposite of the pcv cover.

You want to read the vacuum in the crankcase, not the intake manifold. That's the closest place you could read it.

You could also hook it up to the oil dipstick tube...without the dipstick of course.

At idle it doesn't matter too much. A good pcv valve like the M/E Wagner is set out of the box for 0 to .5. It's also the only precision pcv valve that I know of.

You want to see 10 or so under power. 12 will be too high and suck the oil seals in. Even 8 would be fine.

If by some chance your crankcase vacuum is too high, you can adjust it down with the m/e/ wagner unit.

The now old style header evacuation tubes produced 3-4 which is not really enough.

The theory is that the vacuum helps seal the top piston ring better.

Nothing is a perfect design, it's just that this is 25 free hp. Lots of people give that away.

5/29/155:35 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...