Hi everyone,
3 mercruiser engine swap questions:
1. I know that mercruisers are designed to be the plug and play with the wire harness on the one plug. Are all of the plugs universal with each other like, will a 3.0 plug match a 4.3 plug and a 5.0 and 5.7? Could you plug a 3.0s plug into a 5.7 and all of the wires would be the same? (if all of the engines are close to the same year).
2. If I pull my 1985 5.7 liter mercruiser, would a 1989 5.7 mercruiser full engine package (from a donor boat) bolt right up to it? If not, what would need to be changed to make a 1989 engine go fit where a 1985 engine was.
3. If I were to put 3.0 liter mercruiser where there was a 5.7 liter, what modifications to the hull would have to be made? Im assuming that the rear of the engine would bolt up the same, but the 5.7s are on stringers, the 3.0 has the front bracket. Would I have to cut away the stringers to fit the 3.0? Would it take anything special to bolt in the front 3.0 bracket?
Im just curious as to these because the donor boat is a small & overpowered boat and I need its engine for a larger boat (to replace my 5.7) But, I have a 3.0 that could possibly go into the donor boat if I chose to restore it.
3 mercruiser engine swap questions:
1. I know that mercruisers are designed to be the plug and play with the wire harness on the one plug. Are all of the plugs universal with each other like, will a 3.0 plug match a 4.3 plug and a 5.0 and 5.7? Could you plug a 3.0s plug into a 5.7 and all of the wires would be the same? (if all of the engines are close to the same year).
2. If I pull my 1985 5.7 liter mercruiser, would a 1989 5.7 mercruiser full engine package (from a donor boat) bolt right up to it? If not, what would need to be changed to make a 1989 engine go fit where a 1985 engine was.
3. If I were to put 3.0 liter mercruiser where there was a 5.7 liter, what modifications to the hull would have to be made? Im assuming that the rear of the engine would bolt up the same, but the 5.7s are on stringers, the 3.0 has the front bracket. Would I have to cut away the stringers to fit the 3.0? Would it take anything special to bolt in the front 3.0 bracket?
Im just curious as to these because the donor boat is a small & overpowered boat and I need its engine for a larger boat (to replace my 5.7) But, I have a 3.0 that could possibly go into the donor boat if I chose to restore it.
