Search found 3 matches

by cappy
Fri Oct 27, 2017 11:07 pm
Forum: Trojan Boats Forum
Topic: ? Raw Water Cooling in the Salt ?
Replies: 12
Views: 9876

Re: ? Raw Water Cooling in the Salt ?

A caution... When an engine has been Raw Water cooled for a while, the coolant chambers end up coated with rust. This layer of rust, unless removed during an acid bath of the block and heads during a rebuild, acts as "insulation", and a barrier to heat from the engine being transferred to ...
by cappy
Fri Oct 27, 2017 10:41 pm
Forum: Trojan Boats Forum
Topic: Prop size rpms cooling
Replies: 3
Views: 2754

Re: Prop size rpms cooling

Agreed! Your RPM at WOT with a normal load should be 4400 - 4600 with those engines. One inch of pitch change will change engine RPM by about 200 RPM.. Less pitch = more Engine RPM . The torque curve peaks about 3100- 3200 and that is the most efficient RPM properly loaded. The internal engine wear ...
by cappy
Fri Oct 27, 2017 10:24 pm
Forum: Trojan Boats Forum
Topic: Interesting Trojan Story
Replies: 27
Views: 20867

Re: Interesting Trojan Story

VENT DIRECTION.. The reason Trojan (and others) face the intakes of the FWD vents to the stern, and the AFT vents are facing forward, is because the natural airflow inside these boats is FORWARD. ("Station Wagon Effect" ) The FWD vents are placed at the widest point on the hull (air EXIT) ...