Sicktght311
Active Member
- Sep 21, 2021
- 108
- Boat Info
- Sundancer 270
- Engines
- 7.4L MPI/Bravo3
Posted this on the Sea Ray group, and the responses have been mixed. So posting here to see what the forums think
My Sierra manifolds/risers/6" spacers are all 4 years old. Wet joint setup on a 7.4L MPI in salt water in the northeast. In the slip from April to October, then on dry land all winter. No fresh water flushing while it's in the water all season
Anywho, as part of spring maintenance, I pulled the risers to inspect the passages, and while all the water jackets looked fantastic, the inside of the exhaust ports were filled with droplets of rusty condensation.
My thought is just cold winter, plus warming spring air, means condensation, and once the motor starts up and runs for this first time the season, all of this quickly soots up and burns off.
But it's enough that it's making me second guess, and I'm here for everyone's opinion.
Risers themselves look decent as well too. No major corrosion except for the small water jacket hole at the bottom of the starboard riser has some corrosion/plugging up. The other side is fully open.
Thoughts? Pics attached. 2 pics are looking down the spacers exhaust ports into the manifolds. Other 2 are the mating surfaces and water jackets, and then one pic of one of the risers. The other looks the same
My Sierra manifolds/risers/6" spacers are all 4 years old. Wet joint setup on a 7.4L MPI in salt water in the northeast. In the slip from April to October, then on dry land all winter. No fresh water flushing while it's in the water all season
Anywho, as part of spring maintenance, I pulled the risers to inspect the passages, and while all the water jackets looked fantastic, the inside of the exhaust ports were filled with droplets of rusty condensation.
My thought is just cold winter, plus warming spring air, means condensation, and once the motor starts up and runs for this first time the season, all of this quickly soots up and burns off.
But it's enough that it's making me second guess, and I'm here for everyone's opinion.
Risers themselves look decent as well too. No major corrosion except for the small water jacket hole at the bottom of the starboard riser has some corrosion/plugging up. The other side is fully open.
Thoughts? Pics attached. 2 pics are looking down the spacers exhaust ports into the manifolds. Other 2 are the mating surfaces and water jackets, and then one pic of one of the risers. The other looks the same