Experimenting with a little aluminum foil tape to find the right heights for the air dams before cutting them down and installing them (made mine removable), and found 1/2" results in a difference in CHTs of about 10 deg F between front and rear cylinders in level cruise at normal speeds. This is in comparison to 25-30 deg difference without the tape. The only issue with this is that the front ones tend to get a bit hotter during initial climb (just over 400, unless I shallow out the climb considerably, or step climb, either of which is manageable).
What would you consider a realistic goal for getting the temps matched up? 5 deg? 0?
I.e., how much "polishing the cannonball" should I do here?
TIA!
What would you consider a realistic goal for getting the temps matched up? 5 deg? 0?
TIA!