<div dir="auto">All the timing chain tensioners for 6 cylinder engines have a spring which supplements the oil pressure or perhaps helps prevent the tensioner from retracting when there is no pressure. <div dir="auto">The small "O" rings are to be installed directly below the collets "keepers" and are required to prevent oil from running between the collets and down the valve stem. They should be installed onto the top of the valve just before you install the collets.</div><div dir="auto"><br></div><div dir="auto">M</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri., Oct. 28, 2022, 11:07 p.m. ggilliam--- via Healeys, <<a href="mailto:healeys@autox.team.net">healeys@autox.team.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hello Listers, Happy Halloween!<br>
<br>
I am working on a 29K engine, and among the parts I'm replacing is the <br>
timing chain tensioner. The Moss replacement I received is a spring <br>
loaded unit, as opposed to the oil pressure operated original unit. <br>
Anybody have experience with this item...good or bad?<br>
  There are also 12 small o-rings in the head gasket kit...for valve <br>
stems I presume?<br>
How are they used? They were not present on the head at tear down.<br>
Regards,<br>
Gordy<br>
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