It was a small valve head, with single valve springs, no water takeoff or
air injection ports. I'm not sure it exactly matched any particular original
US configuration -- it was set up with all 18GB accessories.
I have been known to rev it to 5500 on occasion.
--
Max Heim
'66 MGB GHN3L76149
If you're near Mountain View, CA,
it's the primer red one with chrome wires
on 9/24/09 9:56 AM, Bob Howard at mgbob@juno.com wrote:
> This tappet wear problem raises the question: If we don't rev our
> engines above 5,000, do we need the double valve springs?
> Max, was your late 80s engine Gold Seal engine an 18V, fitted with one
> spring per valve?
> Bob
>
>
>
>
> On Thu, 24 Sep 2009 09:33:03 -0700 Max Heim <max_heim@sbcglobal.net>
> writes:
>> Let's throw in some actual user experience, then.
>>
>> When I took the head off my B engine, it had serious valve recession
>> and extreme cam and lifter wear (several cam lobes were worn down
> almost
>> 0.2 inch). This was a non-smog high compression Gold Seal engine from
>> the late 80s, with around 85K miles, almost all on Castrol GTX 20w50.
>>
>> So, I am convinced that current formulations of the factory
>> recommended lubricant are inadequate for tappet protection. The service
> manual
>> no longer applies.
>>
>>
>> --
>>
>> Max Heim
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