thank you supreme mariner i do not think the racor was replaced when engine was replaced i read diff size racor diff flow rate of fuel trying to find what gpm engine calls for 1gpm 1.5 gpm 2gpm thank you!
The Volvo spec shows the motor to use a bit over 50 gph of fuel at max load and rpm, so the 1 gpm should be good. If you plan to run it at WOT for long periods of time you might need to change the filter more often. Good thing about a diesel, if the filter started getting clogged it would just loose some power, and come right back after the filter was replaced