What motor in a '89 Wellcraft Classic 18 ft

[rg33]

Looking at a '89 18ft. Wellcraft Classic with an mercruiser 4 cyl. 140hp I/O. Would the motor in it be the 3.7l or the 4.3? Closed cooling system or fresh water?

 

[Don S]

Re: What motor in a '89 Wellcraft Classic 18 ft

The 140 is a Chevy 3.0L engine. It could be either raw water cooled or have a closed cooling system. You have to look and see which. If it has a heat exchanger with a "Radiator" cap and has antifreeze in it, then it has a closed cooling system.

 

[rg33]

Re: What motor in a '89 Wellcraft Classic 18 ft

Thank you. Now, is the 3.0 and 3.7 two entirely different blocks, systems?

 

[DHPMARINE]

Re: What motor in a '89 Wellcraft Classic 18 ft

YES

 

[rg33]

Re: What motor in a '89 Wellcraft Classic 18 ft

Thanks