[Healeys] Vernier timing gears

[richard mayor]

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.

On Fri, Jul 7, 2017 at 3:15 PM, David Porter <frogeye at porterscustom.com>
wrote:

> I guess my point is that it is a lot of money for 2-3 degrees of valve
> timing.
>
>
> On 7/7/2017 3:33 PM, John Rowe wrote:
>
>> It allows you to get the cam timing correct when assembling. After that it
>> is no different to normal timing wheel
>> John Rowe
>> Qld Ausralia
>>
>> -----Original Message-----
>> From: Healeys [mailto:healeys-bounces at autox.team.net] On Behalf Of David
>> Porter
>> Sent: Saturday, 8 July 2017 12:39 AM
>> To: healeys at autox.team.net
>> Subject: Re: [Healeys] Vernier timing gears
>>
>> ...assuming that the gears and chain and tensioner are up to snuff,
>> exactly
>> what is the big benefit for vernier adjuster when there is a single cam
>> acting on the valves.. dp
>>
>>
>> On 7/7/2017 4:05 AM, Chris Dimmock wrote:
>>
>>> Hi Wayne,
>>> >From a quick internet search on the head markings of your "aviation
>>>
>> bolts" they are at best approx grade 5 (120 KSI) equivalent, cad plated
>> steel bolts. Nothing special.
>>
>>> The Rollmaster bolts you have shown look to me like grade 8 (150 KSI)
>>>
>> unbrako style cap head bolts.
>>
>>> The Rollmaster Vernier timing kit tells you at least 3 times (on the
>>>
>> packaging, and in the instructions) to Locktite these bolts.
>>
>>> If I was going to change these bolts, I'd go up to 180 KSI ARP bolts, not
>>>
>> down to grade 5 120 KSI bolts.
>>
>>> Our Healey Club (AHOC NSW) sells the  Rollmaster Vernier kits and we have
>>>
>> had no issues reported.
>>
>>> Bob Spidell has recently had this timing set installed in his newly
>>>
>> rebuilt engine.
>>
>>> Best
>>> Chris
>>>
>>>
>>>
>>> Sent from my iPhone
>>>
>>>> On 6 Jul. 2017, at 1:43 am, Wayne <waschu2 at gmail.com> wrote:
>>>>
>>>> Hello,
>>>>
>>>>            I am getting back to my Healey 3000 engine rebuild after two
>>>>
>>> years.  I bought the Roller master vernier timing gear set from Moss at
>> that
>> time.  I have previously used the Roller Master gear set with multiple key
>> ways to adjust the cam timing with no problems on other rebuilds. What I
>> don't like about this set is that the cap screws used to clamp the vernier
>> gear to the hub are not very robust. Working in aviation I have AN-4 bolts
>> that I can replace the cap screws with and safety wire them to prevent
>> slippage.  Has anyone using this kit had problems?  I could keep the cap
>> screws and Loctite them. This is a street car, not a race car. Pictures
>> are
>> one bolt installed and the hardware side by side.
>>
>>> Wayne
>>>>
>>>>
>>>> <IMG_2537.jpg>
>>>> <IMG_2540.jpg>
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>>>
>>> --
>> Dave Porter Porter Custom Bicycles 2909 Arno St. NE Albuquerque, NM
>> 87107 505-352-1378 Go HERE: my world www.porterbikes.com/
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>>
>>
> --
> Dave Porter Porter Custom Bicycles 2909 Arno St. NE Albuquerque, NM 87107
> 505-352-1378 Go HERE: my world www.porterbikes.com/
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