Cutlass bearing was fine, removed impeller -perfect, wear ring perfect. Removed main bearing housing (some water ran out) & seals - the split pin...
Engine is good & solid, no muffler - exhaust via flexible hose - pretty sure it's either the jet or driveshaft. Will drop out the driveshaft &...
Cardan shaft - universal joints each end. No radial play in shaft. Steering nozzle etc all good, just in process of strip-down to change the...
Boat does 28 knots lightly loaded with clean hull. Jet/engine was spec'd by Hamilton for boat when it was built 8 years ago & it's been fine ever...
370hp diesel, rumble starts at around 2600rpm up to engine max at 2800rpm - speed dependant on load (or weed on hull) - say around 16 knots...
My HJ274 recently started giving loud rumbling noise at high revs - shaft & bearings seem OK but will check when stripped down. Just took it out...
