We are looking for opinions and feedback fromknowledgeable marine gas engine mechanics, etc.
We have a 2002 Bayliner with two Mercruiser 350 MAG MPI Horizons gas inboards. We have only owned the boat for 8 months, and have very little knowledge of the engine maintenance, other than the port side block has been replaced 09/2018 and the starboard side block replaced 07/2017. (Blocks replaced due to water backwash.) We understand that there are less than 30 hours on both blocks. This is what we know:
PORT SIDE
STARBOARD SIDE
We have replaced the impellers, the metal housings looked okay with no grooves.
We get a guardian alarm at 3,000 RPM, with temps approaching 180 degrees.
There is an abundance (vast amounts) of steam from both exhausts, more on the starboard side.
OUR PLAN
ANY THOUGHTS OR INPUT???
Your feedback is welcomed, as we are novices atthis.
We have a 2002 Bayliner with two Mercruiser 350 MAG MPI Horizons gas inboards. We have only owned the boat for 8 months, and have very little knowledge of the engine maintenance, other than the port side block has been replaced 09/2018 and the starboard side block replaced 07/2017. (Blocks replaced due to water backwash.) We understand that there are less than 30 hours on both blocks. This is what we know:
PORT SIDE
- Block replaced 09/2018 (25 HOURS)
- Exhaust manifold. riser, elbows replaced 09/2018
- All other components such as heat exchanger is original 2002 equipment (we have not proof or verification of any replacement or servicing)
- Steam from exhaust
- Engine running temp 175-178 degrees
- IR Temp at exhaust elbows: 95-98 degrees
STARBOARD SIDE
- Block replaced 07/2017 (35 HOURS)
- Unknown condition of exhaust manifold, or if/when replaced at time of last block replacement
- All other components such as heat exchanger is original 2002 equipment (we have not proof or verification of any replacement or servicing)
- Mass steam from exhaust
- POSSIBLE side causing Guardian Alarm at 3K RPM
- Engine running temp at 178 degrees
- IR Temp at exhaust elbow: 98 and 101 degrees
We have replaced the impellers, the metal housings looked okay with no grooves.
We get a guardian alarm at 3,000 RPM, with temps approaching 180 degrees.
There is an abundance (vast amounts) of steam from both exhausts, more on the starboard side.
OUR PLAN
- Remove and service, or replace heat exchangers.We believe the zincs in the heat exchangers may not have been replaced inseveral years.
- Service or replace Oil Coolers and TransmissionCoolers
- Disassemble and examine Starboard exhaustmanifold
- Install 6" risers on both engines forbetter exhaust hose slope
- Install inline exhaust flappers (Corsa flappers)
ANY THOUGHTS OR INPUT???
Your feedback is welcomed, as we are novices atthis.