Port 5.7 Horizon motor hot

• Aug 1, 2022

• #1

H

Harmon

Member

Jun 28, 2011

363

Jackson NJ/Beach Haven LBI

Boat Info

Current: 2006 320DA as of 6/7/19
Previous 1997 Sundancer 250
1989 Basstracker 40HP

Engines

Twin 350 Horizon with Vdrives

Single 7.4 Ltr carbed
Bravo 3 outdrive

The port engine's inside exhaust riser , elbow gets hotter than the out board riser/elbow one, is this a lack of flow issue. Impellar on that engine has just entered its 3rd year of service. I probably put about 75 hrs on these engines per season for some perspective.

 

• Aug 2, 2022

• #2

H

Harmon

Member

Jun 28, 2011

363

Jackson NJ/Beach Haven LBI

Boat Info

Current: 2006 320DA as of 6/7/19
Previous 1997 Sundancer 250
1989 Basstracker 40HP

Engines

Twin 350 Horizon with Vdrives

Single 7.4 Ltr carbed
Bravo 3 outdrive

So, half an engine is getting hot, could that be blockage?

 

• Aug 2, 2022

• #3

G

Golfman25

Well-Known Member

Sep 12, 2009

7,667

IL

Boat Info

1998 370 Sundancer

Engines

7.4 MPI

Did you take a temp reading? What is the difference?

 

• Aug 2, 2022

• #4

S

scoflaw

Well-Known Member

Aug 10, 2011

6,395

cape cod mass, cape coral fl

Boat Info

1999 Powerquest legend 260 sx 502 mag
2005 Baja 242 islander 496

Engines

502 mpi Bravo 1
496 mag B1

One will always be hotter, usually port

 

• Aug 3, 2022

• #5

H

Harmon

Member

Jun 28, 2011

363

Jackson NJ/Beach Haven LBI

Boat Info

Current: 2006 320DA as of 6/7/19
Previous 1997 Sundancer 250
1989 Basstracker 40HP

Engines

Twin 350 Horizon with Vdrives

Single 7.4 Ltr carbed
Bravo 3 outdrive

I didnt have my infrared thermometer, i'll take a look this Sat. Thanks all