Boat engine question

hancoveguy · 04-19-2010, 08:39 PM

Okay, where are all my mechanical people out there? Take a stab at this one. I will post more diagnostic/trouble shooting info as I get it.

Just bought a 98 Wellcraft Eclipse 2400 SS. The 7.4 liter v8 appears to have some issues. The hour meter says 150 hours or so. The motor APPEARS clean and intact. My mechanic tells me that the front, down tubes on the exhaust manifolds have some cracking and peeling paint as if it was run really really hot at some point. There was a slice of bread sized burned rubber flap thing found inside the manifold. He said the plugs were fine and the motor fired right up and seems to run okay but he wants to test it under a load. I think he suspects some circulation problems too. The boat sat for 3 years or so in a rack and as far as we know it was winterized properly by a marina. I have the utmost faith in my mechanic but would be curious to hear ideas or experiences anyone here has had that resemble this situation.

Last thought, any suggestions for a place to sea trial the boat at speed in the Merrimack Valley in Mass. I'd hate to drag it up to the lake for what could turn out to be a 10 minute sea trial.

Thanks
HCG

04-19-2010, 08:39 PM	#1
hancoveguy Senior Member Join Date: Oct 2008 Posts: 276 Thanks: 95 Thanked 65 Times in 30 Posts	Boat engine question Okay, where are all my mechanical people out there? Take a stab at this one. I will post more diagnostic/trouble shooting info as I get it. Just bought a 98 Wellcraft Eclipse 2400 SS. The 7.4 liter v8 appears to have some issues. The hour meter says 150 hours or so. The motor APPEARS clean and intact. My mechanic tells me that the front, down tubes on the exhaust manifolds have some cracking and peeling paint as if it was run really really hot at some point. There was a slice of bread sized burned rubber flap thing found inside the manifold. He said the plugs were fine and the motor fired right up and seems to run okay but he wants to test it under a load. I think he suspects some circulation problems too. The boat sat for 3 years or so in a rack and as far as we know it was winterized properly by a marina. I have the utmost faith in my mechanic but would be curious to hear ideas or experiences anyone here has had that resemble this situation. Last thought, any suggestions for a place to sea trial the boat at speed in the Merrimack Valley in Mass. I'd hate to drag it up to the lake for what could turn out to be a 10 minute sea trial. Thanks HCG