Conrad
Guru
- Joined
- Oct 19, 2007
- Messages
- 1,972
- Location
- Canada
- Vessel Name
- Blue Sky
- Vessel Make
- Nordic Tugs 42 Hull #001
Due to a nasty overheating incident it looks like we will have to repower. The old engine, a Volvo TAMD 40A, is not worth rebuilding according to every diesel shop I've queried.*
So, we are looking to repower with new, and are looking at a John Deere 4045 turbo (don't know the exact model #) at 150 HP or an Isuzu 6BG1 at 135/140 HP.
Dollarwise they are similar, with the Deere having a slight edge, but the Isuzu is a 6 cylinder naturally aspirated while the Deere is a 4 cylinder turbo. Our preference would be to go naturally aspirated with more cylinders.
Th engine will be going in to a 32' semidisplacement boat that we cruise at 7.5 knots but would like to have the option of 10 (or so) knots when required for passes etc.
*
Anyone have any thoughts or experiences re these two engines?
So, we are looking to repower with new, and are looking at a John Deere 4045 turbo (don't know the exact model #) at 150 HP or an Isuzu 6BG1 at 135/140 HP.
Dollarwise they are similar, with the Deere having a slight edge, but the Isuzu is a 6 cylinder naturally aspirated while the Deere is a 4 cylinder turbo. Our preference would be to go naturally aspirated with more cylinders.
Th engine will be going in to a 32' semidisplacement boat that we cruise at 7.5 knots but would like to have the option of 10 (or so) knots when required for passes etc.
*
Anyone have any thoughts or experiences re these two engines?