View single post by Jensen Healey
 Posted: 09-14-2006 04:50 pm
PM Quote Reply Full Topic
Jensen Healey

Joined: 03-11-2005
Location: San Anselmo, California USA
Posts: 983
The cast tappets I looked at are machined on the inside as well as out so visual identification may be tough. Are you building a high RPM motor? It's safe to assume they are cast unless proven otherwise. You may have to ask on one of the Lotus lists to get info on later iterations of the 907. is one such list.

It seems the steel tappets were a available as a standard Lotus replacement about 5 years ago but they back to cast tappets these days.