I just had a pre-purchase engine survey completed. The engine has 573 hours on it. The report says "The coolant cooled turbo exhaust housing has a hot spot at the top with noticeable paint burned off and rusting. Temperature of the hot spot @3,000 rpm was 250f at wide open throttle(3,635rpm) it was 450f" The surveyors comments where " check turbo housing for restricted coolant flow, check turbo cooling water hoses" There where no other comments or recommendations. Should I be concerned?
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser.
You should upgrade or use an alternative browser.
Yanmar 110hp 4JH3-DTE Turbocharger
- Thread starter ackphish
- Start date
Favunclerich
Well-known member
- Joined
- Jan 27, 2010
- Messages
- 203
- Fluid Motion Model
- C-248 C
- Hull Identification Number
- FMLT2542G708
- Vessel Name
- Roam (2008 #42)
There is much conflicting information here. The Yanmar 110HP is a 4JH4-HTE, not a 4JH3-DTE. The 110 HP 4JH4-HTE has a max RPM of 3200, so I suspect that you are actually looking at a 125 HP 4JH3-DTE. It has a specified maximum RPM of 3800. It is unclear why you are only getting 3635 RPM. It could be a function of warm ambient temperature, sea conditions, a dirty bottom or something else. You need to understand what is going on before you buy this boat. It is normal for the paint to burn off the turbochargers on these engines and to see consequent corrosion. 250 degrees F at cruise RPM's seems perfectly normal to me. I don't know if a surface temperature at 450 degrees F at max throttle is a problem or not.
-
Tugnuts.com is the community hub for Ranger Tug, Cutwater, and Solara owners. Since its inception in 2008, the Tugnuts forum has grown into an active and thriving community of more than 9,000 members. It serves as both a meeting place for the best boating community online, and an invaluable archive of information.
- User menu