<div dir="ltr">2 to 3 degrees of valve timing can make a very big difference in performance. And that post about the factory valve timing varying by 5 degrees is absurd.<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Jul 7, 2017 at 3:15 PM, David Porter <span dir="ltr"><<a href="mailto:frogeye@porterscustom.com" target="_blank">frogeye@porterscustom.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I guess my point is that it is a lot of money for 2-3 degrees of valve timing.<br>
<br>
<br>
On 7/7/2017 3:33 PM, John Rowe wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
It allows you to get the cam timing correct when assembling. After that it<br>
is no different to normal timing wheel<br>
John Rowe<br>
Qld Ausralia<br>
<br>
-----Original Message-----<br>
From: Healeys [mailto:<a href="mailto:healeys-bounces@autox.team.net" target="_blank">healeys-bounces@autox.<wbr>team.net</a>] On Behalf Of David<br>
Porter<br>
Sent: Saturday, 8 July 2017 12:39 AM<br>
To: <a href="mailto:healeys@autox.team.net" target="_blank">healeys@autox.team.net</a><br>
Subject: Re: [Healeys] Vernier timing gears<br>
<br>
...assuming that the gears and chain and tensioner are up to snuff, exactly<br>
what is the big benefit for vernier adjuster when there is a single cam<br>
acting on the valves.. dp<br>
<br>
<br>
On 7/7/2017 4:05 AM, Chris Dimmock wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi Wayne,<br>
>From a quick internet search on the head markings of your "aviation<br>
</blockquote>
bolts" they are at best approx grade 5 (120 KSI) equivalent, cad plated<br>
steel bolts. Nothing special.<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
The Rollmaster bolts you have shown look to me like grade 8 (150 KSI)<br>
</blockquote>
unbrako style cap head bolts.<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
The Rollmaster Vernier timing kit tells you at least 3 times (on the<br>
</blockquote>
packaging, and in the instructions) to Locktite these bolts.<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
If I was going to change these bolts, I'd go up to 180 KSI ARP bolts, not<br>
</blockquote>
down to grade 5 120 KSI bolts.<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Our Healey Club (AHOC NSW) sells the Rollmaster Vernier kits and we have<br>
</blockquote>
had no issues reported.<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Bob Spidell has recently had this timing set installed in his newly<br>
</blockquote>
rebuilt engine.<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Best<br>
Chris<br>
<br>
<br>
<br>
Sent from my iPhone<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
On 6 Jul. 2017, at 1:43 am, Wayne <<a href="mailto:waschu2@gmail.com" target="_blank">waschu2@gmail.com</a>> wrote:<br>
<br>
Hello,<br>
<br>
I am getting back to my Healey 3000 engine rebuild after two<br>
</blockquote></blockquote>
years. I bought the Roller master vernier timing gear set from Moss at that<br>
time. I have previously used the Roller Master gear set with multiple key<br>
ways to adjust the cam timing with no problems on other rebuilds. What I<br>
don't like about this set is that the cap screws used to clamp the vernier<br>
gear to the hub are not very robust. Working in aviation I have AN-4 bolts<br>
that I can replace the cap screws with and safety wire them to prevent<br>
slippage. Has anyone using this kit had problems? I could keep the cap<br>
screws and Loctite them. This is a street car, not a race car. Pictures are<br>
one bolt installed and the hardware side by side.<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Wayne<br>
<br>
<br>
<IMG_2537.jpg><br>
<IMG_2540.jpg><br>
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