TR4 Engine - Valve Seals Question???

["Brian Sanborn" <sanborn@net1plus.com>]

Listers,

Another engine rebuild question.....

The machine shop owner asked me where the valve seal parts were.  I told him
that they were not used in the original engine design.   He recommended that
he modify the standard bronze valve inserts to accept a modern valve seal.

Do you guys have an opinion about this.  Is it a good modification like the
rear seal update or is it a bad idea.  Need to let him know soon.

Brian Sanborn
62 TR4          CT16260L  - Groton,  MA
sanborn@net1plus.com