More on unleaded fuel and valve seats

[cloughbt@batman.flight.wpafb.af.mil (Bruce T. Clough)]

I have to echo Egil Kvaleberg: if you're puttering around town you don't have 
to replace the seats, if your like to send the rev counter to the red, you 
better harden your seats.  We rebuilt our TR4 head several years ago and as 
a matter-of-fact had the hardened seats put in.  Better safe than sorry.

Bruce Clough     email: cloughbt@batman.flight.wpafb.af.mil