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

Posted by Owen_Dyneto On 2008/11/13 12:47:17

Yes, you absolutely, positively have to use the gauge. If all you did was hand-lap a few seats you might get away without it, but if seats and/or valves were machine cut and/or any valves replaced you need to establish the correct clearance (0.030 to 0.070 inch if I remember correctly). Rob Carpenter had made and advertised this and the other unit for the 51-54 Packard eights for many moons. I think you'll find his ad in the PAC newsletter. I had several of these in the tool box and if you don't find one elsewhere, send me a PM and if I can locate one we can arrange something.