3.0 Mercruiser

[fargo5437]

Any secrets out there for getting a little more power out of a 3.0 L Mercruiser? I am getting around 30 mph would like to get 35 at least. The motor is all factory in a 1991 190 Glasport. I know I could change the prop but would like to spend less $ than that.

 

[sxmerc]

Re: 3.0 Mercruiser

What kind of RPM number are you getting at wide open, timmed out?

 

[fargo5437]

Re: 3.0 Mercruiser

I think around 4500 to 5000

 

[nitrosteve]

Re: 3.0 Mercruiser

You will need to be more specific as far as WOT RPM and Speed for anyone to help you. Also what is the load in the boat.

 

[sxmerc]

Re: 3.0 Mercruiser

Great little workhorse engines these are. Hot rods they are not. Cheapest way to get some more go-go I'm afraid, is to swap out props. A five mile an hour increase is pretty optimistic though. What kind and pitch prop are you currently running? Check with your local dealer to see if they are participating in a demo prop program. This will let you try a few different wheels before you buy.

 

[fargo5437]

Re: 3.0 Mercruiser

I will have to figure all that out then ask again thanks for info