WOT 8.1 Mercruiser

• Sep 12, 2019

• #1

Oh La La

Member

Sep 12, 2019

68

Boat Info

400 Express

Engines

7.4 MPI Horizons

Having a 2002 410 EC surveyed this weekend. Can anyone tell me what should be the RPMs at WOT?
Thanks

 

• Sep 12, 2019

• #2

Espos4

Well-Known Member

Jan 1, 2017

3,013

Long Island NY

Boat Info

2007 240 Sundeck

Engines

350 MAG Bravo 3 W/DTS

There should be a label on the motor providing that information.

 

• Sep 12, 2019

• #3

sbw1

Well-Known Member

Oct 10, 2006

8,185

West Michigan

Boat Info

This is listed in my signature

Engines

This is listed in my signature

4800 for the standard Merc. 5000 if it is a Mag HO Merc engine.

 

• Sep 12, 2019

• #4

juggernaut1

Well-Known Member

Apr 19, 2015

1,152

Perth, Western Australia

Boat Info

Boatless - sold Searay 38 Sundancer

Engines

8.1’s

4200 to 4600 for 370hp and 4400 to 4800 for HO 425hp inboards. Merc preferred is towards the higher end of those ranges.

 

• Sep 12, 2019

• #5

Oh La La

Member

Sep 12, 2019

68

Boat Info

400 Express

Engines

7.4 MPI Horizons

Thanks