Home › Forum › Ask A Member › 18 -> 20hp…a simple conversion? › Re: 18 -> 20hp…a simple conversion?
December 18, 2015 at 11:30 am
#28752
Access to a surface plate and height gauge to measure the distance from intake and exhaust ports to the c/l , or , where the cylinder block and crankcase joins, will yield significant "differences" between many these motors, over ~ 20 year period.
just sayin’ !