01-22-2009, 11:19 AM
|
 |
CC Member
|
|
|
Join Date: Mar 2006
Location: San Marcos california,
CA
Cobra Make, Engine: 1989 KCC from South Africa Right Hand Drive
Posts: 1,601
|
|
Not Ranked
I too have aluminium heads and run 11.5:1 on 91 octane and have for years.I have never had any compression related piston damage.Just make sure the timing is right.
John
|