Top Speed for my 1998 115hp Mercury

[frank5465]

i have been reading some post and im trying to find out what the Top speed should be for My 1998 Mercury 115HP engine i have a 19ft Wellcraft CC and im only getting up to 25knots i feel im not at its Top speed How do i find this out, i have Carbs rebuilt prop size changed and put a Hydrofoil on it and i dont feel this think is Topping out i had a compression test done and they said its fine i read someing about a CDM module or CMD module im a novice whom is learning a lot by reading and messing around on my own, please help

 

[MercGuy]

Re: Top Speed for my 1998 115hp Mercury

What are your RPM's at WOT (Wide Open Throttle) ??

Your engine is spec'd to run between 4750 and 5250 RPM wide open. If you are under that you need a lower pitch prop.

If your over that range, you might need a higher pitched prop depending on what you are trying to accomplish and if you can be trusted not to over rev the engine.

 

[frank5465]

Re: Top Speed for my 1998 115hp Mercury

ill be taking boat out in the next few days so ill right down the RPM's at WOT and repost, right now its Fn Raining so much here i can float the Boat in my Yard

 

[frank5465]

Re: Top Speed for my 1998 115hp Mercury

Sorry for Late Post WOT was about 5000 RPM never higher than 5000 and top speed between 22 and 23 knots and at times as high as 24 knots