I hear you knocking...

["Armando Picciotto" <apicciotto@[169.199.197.62]>]

My 63 +4 is tunned to specs and runs fine except under heavy load 
(like when going up San Francisco hills).  Then it starts to knock 
its head off.  I use 92 octane gas, the highest I can get around 
here.  According to other web pages, a 9:1 compression engine, like 
the TR3 is supposed to be, requires 96 octane gas.  Has anyone solved 
this problem?  What about additives?  Are they any good?  Web wisdom 
appears to be that they are a waste of money.  Any suggestions?

Armando Picciotto
63 +4