TAKE ME TO THE PILOT
Just about everybody uses either dead pilot or live pilot valve seat forming tools, and once in a while when cutting large diameter seats chatter will occur. We have found that an application of STP or LUCAS engine oil treatment on the pilot will act as a “shock absorber” and dampen the vibrations, giving a smooth cut. With the KW dead pilot type, put it between the pilot and tool holder, and with the Serdi live pilot type, it goes on the pilot OD or inside the guide.

Timm Jurincie
Tuf-Enuf Auto & Marine Performance
Avondale, AZ
April, 2016