iswara204 500 RPM Senior Member Joined Feb 2, 2006 Messages 545 Points 1,518 May 30, 2006 #1 guys, is there any improvement in anyway if i change 4g93 head in my 4g91? thanks guys...
A alvin24 3,000 RPM Senior Member Joined Nov 14, 2003 Messages 3,113 Points 5,148 May 31, 2006 #2 This has been discussed before... do a search. Its not a good mod... your compression will drop, and you'll face gasket leak problems due to the mis alligned water jackets.
This has been discussed before... do a search. Its not a good mod... your compression will drop, and you'll face gasket leak problems due to the mis alligned water jackets.