Re: Packard Tool J-2553, Need Tool or Specs.

Posted by PackardV8 On 2011/5/14 10:25:30

Tim Cole writes:
"It is essential for optimum results that the grinding be carried out using equipment in good condition and personnel who understand the principles of boundary contact between metal surfaces."

That advice is the most important advice that can ever be given about any valve job on ANY engine. If the valve grinding is farmed out to a service provider then GOOD LUCK finding one that will follow Tim Coles advice whether the service provider is qualified or not. I've just been thru it too many damned times. This is especialy true on valves that have 'unusual' seat angles. I won't bore anyone anymore with details or reasons as to why that is true.

Just follow Tim Coles advice. BE SURE TO check the fit of the valves before assembly. ABSOLUTELY under NO CONDITIONS should the service provider of the valve grinding deliver the heads to the customer as assembled!!!