<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>This might be obvious but it seems to me that step one is to eliminate the bypass as a possibility, not just with a better spring, but block it. <br>
<br>Sent from my iPad</div><div><br>On Sep 26, 2013, at 10:57, "<a href="mailto:riverside@southslope.net">riverside@southslope.net</a>" <<a href="mailto:riverside@southslope.net">riverside@southslope.net</a>> wrote:<br>
<br></div><blockquote type="cite"><div>
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<div>It is also very hard to measure what you really need to know which is</div>
<div>the clearance across the parting line. Micrometers and dial
bore </div>
<div>gauges to the rescue!</div>
<div> </div>
<div>art de armond</div>
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<div style="BACKGROUND:#f5f5f5">
<div style><b>From:</b> <a title="toodamnfunky@comcast.net" href="mailto:toodamnfunky@comcast.net">toodamnfunky@comcast.net</a> </div>
<div><b>Sent:</b> Wednesday, September 25, 2013 5:38 PM</div>
<div><b>To:</b> <a title="apackard68@att.net" href="mailto:apackard68@att.net">Andrew Packard</a> </div>
<div><b>Cc:</b> <a title="fot@autox.team.net" href="mailto:fot@autox.team.net">fot@autox.team.net</a> ; <a title="6pack@autox.team.net" href="mailto:6pack@autox.team.net">6pack@autox.team.net</a> </div>
<div><b>Subject:</b> Re: [Fot] [6pack] tr250 oil pressure
issue</div></div></div>
<div> </div></div>
<div style="FONT-SIZE:small;FONT-FAMILY:'Calibri';FONT-WEIGHT:normal;COLOR:#000000;FONT-STYLE:normal;TEXT-DECORATION:none;DISPLAY:inline">
<div style="FONT-SIZE:12pt;FONT-FAMILY:arial;COLOR:#000000">
<p>I learned to never trust plastigauge. .0005 too tight on a race motor and
it's all over with. A street motor may not care though</p>
<p>but still reading plastigauge can be a matter opinion or interpretation
instead of a hard dimension.</p>
<p>Whatever became of the came bearing clearance point I read about, or lack of
cam bearings. That seemed the most plausible.</p>
<p>I also read something about a crack in a main casting that caused similar
symptoms.</p>
<p>jim g</p>
<p><br><br> </p>
<p>
</p><hr id="zwchr">
<p><b>From: </b>"Andrew Packard" <<a href="mailto:apackard68@att.net">apackard68@att.net</a>><br><b>To:
</b><a href="mailto:6pack@autox.team.net">6pack@autox.team.net</a>, <a href="mailto:fot@autox.team.net">fot@autox.team.net</a><br><b>Sent: </b>Wednesday,
September 25, 2013 3:50:26 PM<br><b>Subject: </b>Re: [Fot] [6pack] tr250 oil
pressure issue<br><br></p>
<div style="FONT-SIZE:12pt;FONT-FAMILY:times new roman,new york,times,serif;COLOR:#000;BACKGROUND-COLOR:#fff">
<div style><span style>I'm the guy with the TR250
oil pressure problem. I replaced my oil pressure regulator spring with a
HD one. The one I took out measured short and the new one was longer than
spec from Bentley. It helped, but after I got well up to temp, pressure
disappeared at idle and water boiled over. I'm travelling for work this
week, so I dropped off my car with my mechanic friend with a new oil pump and
some plastic gauge to check the bearing clearance. I'll find out the
status soon. This is more than a little frustrating with Triumphest
starting next week.<var id="yui-ie-cursor"></var></span></div>
<div style="FONT-SIZE:16px;FONT-FAMILY:times new roman,new york,times,serif;COLOR:rgb(0,0,0);FONT-STYLE:normal;BACKGROUND-COLOR:transparent"><span style>Andy</span></div>
<div style="FONT-SIZE:16px;FONT-FAMILY:times new roman,new york,times,serif;COLOR:rgb(0,0,0);FONT-STYLE:normal;BACKGROUND-COLOR:transparent"><span style></span> </div>
<div style="FONT-SIZE:16px;FONT-FAMILY:times new roman,new york,times,serif;COLOR:rgb(0,0,0);FONT-STYLE:normal;BACKGROUND-COLOR:transparent"><span style></span> </div>
<div> </div>
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<div class="hr" style="FONT-SIZE:0px;BORDER-TOP:#ccc 1px solid;HEIGHT:0px;BORDER-RIGHT:#ccc 1px solid;BORDER-BOTTOM:#ccc 1px solid;PADDING-BOTTOM:0px;PADDING-TOP:0px;PADDING-LEFT:0px;MARGIN:5px 0px;BORDER-LEFT:#ccc 1px solid;LINE-HEIGHT:0;PADDING-RIGHT:0px">
</div><font face="Arial"><b><span style="FONT-WEIGHT:bold">From:</span></b> Yahoo
<<a href="mailto:brucesimms2003@yahoo.ca">brucesimms2003@yahoo.ca</a>><br><b><span style="FONT-WEIGHT:bold">To:</span></b> "<a href="mailto:6pack@autox.team.net">6pack@autox.team.net</a>"
<<a href="mailto:6pack@autox.team.net">6pack@autox.team.net</a>> <br><b><span style="FONT-WEIGHT:bold">Sent:</span></b> Wednesday, September 25, 2013 8:22
AM<br><b><span style="FONT-WEIGHT:bold">Subject:</span></b> [6pack] tr250 oil
pressure issue<br></font></div>
<div class="y_msg_container"><br>Did the guy with the oil pressure issue on his
new 250 motor ever get this<br>sorted? inquiring minds want to
know. <br><br>I'm hoping to do a repeat on the<br>San Diego
mechanic with (300,000?) miles on his 250 and never did the bottom<br>end.
In the Triumph magazine article he said he just does regular oil<br>changes with
STP. I've shaved the head and a hotter cam so I may have
added<br>additional stress to the engine. my oil pressure hasn't
deteriorated in 16<br>years of ownerhip.<br><br>Cheers, Bruce Simms 73
tr6<br><br>________________________________________<br><br><a href="mailto:6pack@autox.team.net" target="_blank">6pack@autox.team.net</a><br><br>Donate:
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<p align="left" color="#000000">No virus found in this
message.<br>Checked by AVG - <a href="http://www.avg.com">www.avg.com</a><br>Version: 2014.0.4117 / Virus
Database: 3604/6696 - Release Date: 09/24/13</p></div></div></div>
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