Hi , yes very pleased with
repower (or
diesel conversion ford 418 xld 60HP@4400rpm - used at 3400rpm max 50HP)
water lock used for two reasons- on sterndrives conversion the
exhaust normally would go down about 3ft into
water through prop which is good silencer but lowers HP as restriction to flow and as it replaced a Mercruise v8 the riser height wasnt sufficient as conversion of cow horn
exhaust tubes removes the non return valves (2" outlet into welded plate on a 4" outlet) and as boat on tidal moorings on
english channel the tidal flow pretty fast and could back flow into
engine.
the original cow horn exhaust have been blanked off and the internal water pump removed from leg drive as new repower has
jabsco pump fitted to
engine
The water lock has advantage of two things.
1 . visable exhaust water flow outlet with very low back pressure
2 . easy
maintenance for winter drain down or
replacements of
parts without boat
removal from water.
i used vetus 2" unit with vetus 2" exhaust hose no back pressure or flow problems.
have lots of tech data on project - in uk -sorry for delay in replies as time difference.