Sunseeker Martinique 38 prop size

[feeling fuelish]

Would anyone know what props should be fitted to a sunseeker Martinique 38 with kad42 engines and duo prop out drives new to me boat opened it up today and wouldn’t rev about 3k flat out bottoms clean and throttle linkages maxing out on full throttle

 

[Mr Googler]

B6 I think.

I’m running J5 and it’s a bit underpropped. Did it rev over 3k before?

One engine feel less powerful than the other? Dirty exhaust gases? Would look like a dirty line in the wake.

Intercoolers cleaned recently? Turbos ok? Mine wouldn’t rev over 3100 on when engine. Boost leak at intercooler housing

 

[feeling fuelish]

Intercoolers cleaned out last week no smoke when under power seems to run clean don’t know if it reeved over 3 k before as I bought as a project and never opened it up as it had issues now they’re all resolved . Mate has a sunseeker Martinique 39 with kad42 and he’s running b5 props will be removing mine at weekend and checking sizes as think they could be a mismatch of sets

 

[rlw]

I has been a while but I think mine ran on A6 props but this was with AD41's. Still managed close to 3.800RPM WOT.

 

[Mr Googler]

Maybe a slipping bush inside the duo prop too?

B5 would make sense. The J5’s where already on when I bought it. You are supposed to go up a size when going from b to J series so I should be on j6 I reckon. Maybe the previous owner didn’t know that?

I’ll stay as I am as get wot easily, good hole shot and 35 knots so that’ll do.