My Mk3 7.4L is spec'd max 3800-4200 WOT
It powers a heavy (10000 lb) single shaft v-drive planing hull
Current 19X18 3b prop gives 22.5 knots WOT at 3850.
It was suggested to me that I may be lugging the engine running it at a 3200 cruise(16 knots) with this prop .
I'm considering a reprop to 4000 or should I try to get closer to 4200 for best engine life, best low and mid-range
cruise?
It powers a heavy (10000 lb) single shaft v-drive planing hull
Current 19X18 3b prop gives 22.5 knots WOT at 3850.
It was suggested to me that I may be lugging the engine running it at a 3200 cruise(16 knots) with this prop .
I'm considering a reprop to 4000 or should I try to get closer to 4200 for best engine life, best low and mid-range
cruise?