<div dir="ltr"><div class="gmail_default" style="font-size:small">The larger aftermarket valves offered by BPNW also have the radius groove for the keepers. </div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Jan 3, 2016 at 8:32 PM, Steve Yott <span dir="ltr"><<a href="mailto:tr4@wi.rr.com" target="_blank">tr4@wi.rr.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">In addition to this is Triumph seemed to use their own design for the locks.<br>
Normally a lock has a somewhat square shaped ring on the inner surface and<br>
the valves use a matching grove.  Triumph uses a radius lock and matching<br>
radius groove in the valve.  I have never found a usable replacement lock on<br>
the market and keep a supply of used Triumph parts!<br>
<br>
IMHO, I would not use any aluminum alloy retainers as they will wear<br>
quickly.  What we need to do is find someone to reproduce the excellent<br>
retainers that Ken supplied...<br>
<br>
Steve Yott<br>
<div><div class="h5"><br>
<br>
-----Original Message-----<br>
From: Fot [mailto:<a href="mailto:fot-bounces@autox.team.net">fot-bounces@autox.team.net</a>] On Behalf Of Tony Drews<br>
Sent: Sunday, January 03, 2016 7:16 PM<br>
To: <a href="mailto:fot@autox.team.net">fot@autox.team.net</a><br>
Subject: Re: [Fot] TR-4 Valve Spring Cap / Collar dilemma<br>
<br>
Follow up question - does anyone know the angle of the valve keeper for the<br>
5/16" valve stems?  I'm trying to cross reference to a commonly available<br>
valve spring retainer / collar.<br>
<br>
My measurements are showing 5 to 6.5 degrees.  I've found retainers for 7, 8<br>
and 10 degree keepers with either 1.375 or 1.365 OD.  1.375 seems to go with<br>
7 degrees, 1.365 seems to go with 8 or 10 degree.<br>
<br>
Interesting detail - the new alloy retainers from Moss don't fit the new<br>
keepers from Moss very well.  I think their retainers are either mislabeled<br>
or for a different combination of parts...<br>
<br>
Cheers, Tony<br>
<br>
At 06:36 PM 1/3/2016, Tony Drews wrote:<br>
>I'm going through my TR-4 head.  Since BFE seems to be out of action, I<br>
>purchased aluminum valve spring collars / caps from Moss.  I find that<br>
>they are smaller diameter than the cool titanium ones I'm running and<br>
>smaller than my current springs.  Unfortunately, the Titanium ones are<br>
>wearing and need to be replaced.  I don't have stock parts on hand to<br>
>compare to, so I'm not sure if the Moss part is undersized or if I'm<br>
>running larger than normal diameter stuff from Ken.<br>
><br>
>The valve spring collar I've removed is 1.365" diameter, the outer<br>
>spring is 1.380" diameter and the alloy spring collar from Moss is<br>
>1.260" diameter.<br>
><br>
>Anyone know of a source of lightweight valve spring collars for the<br>
>1.380" springs?<br>
><br>
>TIA<br>
><br>
>Cheers, Tony Drews<br>
><br>
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