[quote=junkyardjohn;3778524][QUOTE=bruceman1968;When I was seventeen I rebuilt my first small chevy and I didn't know what a thrust button was either.
( It's a metal washer that you weld on to the timing cover to keep the cam from walking bty.)
HMMMMMMM.. I MUST BE GETTING FORGETFUL IN MY OLD AGE. I DON'T REMEMBER EVER WELDING ANYTHING TO MY TIMMING COVER, & I'VE INSTALLED A COUPLE OF THRUST BUTTON ON CAMS. THEY ARE TO KEEP YOUR CAM FROM WALKING THOUGH.
JOHN[/quote]
John, It is I who is getting old. I just did a search for thrust button on goggle and realized techonolgy has changed. Thrust buttons with needle bearings wow. And yes back in the day on flat tappet motors we welded a washer from the hardware store to the timing cover for cam walk. But my bad thoes thrust buttons don't require welding. Sorry for the scare rew338. Also I just noticed your talking about a roller motor and I was thinking flat tappet.