castoldi only come with one impeller then every thing is matched through the gear box that is if you have the correct size jet for the boat...
ratios thankyou for taking the time to reply my engine has max power at 3300 rpm continious power 3100 rpm gear ratio is 5000 rpm
can any one help i have a gear ratio 28/38 on jet it should be 36/30 on a boat of 3300lbs 28/38 is for v8 petrol 5000 rpm 36/30 is for 200hp...
try connacting some diving scooter manufactuers as that should be same type of thing
:confused: jet drive problem i have a castioldi 05 ,200mm ss impeller, yanmar 200bhp lha dtp ,8.4 meter rib 6500lbs AUW. it is cavertating at...