<div dir="ltr"><div>Roger -</div><div><br></div><div>I purchased a car that the PO had replaced the rings and they had not seated -- and driving in the usual break-in mode did not get the job done. In the end I did the trick wherein you dump some Bon Ami into the intake and that resolved the problem.</div><div><br></div><div>The intent it not to scratch the cylinder walls with the powder (indeed Bon Ami is quite gentle in that regard) but rather to absorb oil in the cylinders so they run a stroke of two with oil deprivation and the rings seat.</div><div><br></div><div>Probably a controversial solution - certainly well documented on the web though, of course, that proves nothing. But I think it worked for me and seemed worth a shot prior to tearing things down.</div><div><br></div><div>Geo</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Jun 21, 2015 at 12:46 PM, Roger Elliott <span dir="ltr"><<a href="mailto:elliottr@rmi.net" target="_blank">elliottr@rmi.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
<br>
What is the most likely cause of rings not seating?<br>
<br>
I rebuilt my Spitfire engine about 4,000 miles ago and still have excessive oil consumption. I don't seem to be leaking oil, so my assumption is that it is getting past the rings.<br>
<br>
I did check the gap on all of the rings during installation and they all were within tolerance - generally towards the tighter end.<br>
<br>
I am planning on taking off the head and putting new rings on.<br>
<br>
What steps should I take to try to make sure the new rings seat properly? I am thinking I should run a hone down cylinders just to roughen up the walls a bit.<br>
<br>
<br>
Thanks,<br>
Roger Elliott<br>
<br>
<br>
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