Re: 1940 Custom Low Compression

Posted by HH56 On 2014/5/28 10:51:45

The manual has the mechanics use the valve refacer to grind off the stem. Don't know if that holds the valve in a certain position but the important thing is to make sure the face is square to the stem..

I used an ordinary bench grinder but did adjust the work holder so it was a flat 90 degrees and sort of rolled the stem over the surface while barely touching the wheel. An experienced mechanic could probably do it by eye but since there was no expert here it was done carefully a tiny bit at a time with a check in between grinds so as not to go too far. I think the hardest part of the thing was getting the engine positioned properly on each cylinder so the cam lobes were correct.