> Now, based on an average gas mileage of 20 for TIICO, assumed 15 (does
> anyone know?) for Bob's motor, gas cost of $1.40 per gallon and 12000 miles
> traveled a year, Boston Bob's Big-valve Boxer will cost $280 more in gas per
> year to operate.  This means it will take about 3 years for Tiico's improved
> mileage to pay off.

15 MPG ??? Is this for real?  I assume the base BB rebuild gets the same as the
original engine (ca 19 mpg).

Oh well - its nice to have choices.