Re: Valve grinding tools

Posted by PackardV8 On 2014/10/29 8:46:55

Have only the one damaged seat replaced. Not all of them.
If the other seats look good then just touch them up with some fine lapping compound by hand.

What ever route u take, be sure to inspect the finished lapping or grinding with a good lite source. Shine a lite into the intake and exhaust ports , look aaround the seat of the closed valvee for any lite. Do that before leaving the machine shop.
When u get the block home then assemble valves and springs. Turn block on side and pour coal oil into ports and inspect for any significant leakage around the seated valves. Some minor seepage over nite is not a problem.

The biggest problem i've ran into over the years, even from well established and well experienced machine shops is often sloppy work that is not obvious without close inspection either using lite or the fuel oil test.