Running out of water//Added info
 

It is a 28 twin 350 Mirage. Boat continues to run out of water and the heads over heat. Both motors and drives completely rebuilt and all water lines checked and rechecked. Question is, is there way to run the motor without a water thermostat or run the water lines a different way to keep the cool water coming in. Thanks Steve (916 684 9437)///They are OMC Cobra outdrives they pull water from the bottom of the outdrives //I have installed new impellers on both drives//The exhaust manifolds are Stellings stainless marine water cooled large tube exhaust headers.. All four exhaust are in good shape no rust or corrision. The motors are ZZ4 Chevrolet 350's with aluminum heads. And thanks guys Im going crazy with this problem...........

Re: Running out of water
 

Need a little more info. What drives? How old? Closed cooling? What shape is the raw water pump/impellor in if it has one?

Re: Running out of water
 

Is this a bravo set up?If it is sounds like water intake hose at transom is corroded.
Nordic95

Re: Running out of water
 

How about the exhaust manifolds and risers?

Re: Running out of water
 

Are You Sure Someone Didn't Put Thermostat In Upside Down?? Check For Air Leaks Around Fittings. If This Wasn't A Problem Beefier Something Has Ben Hooked Up Wrong.

Re: Running out of water
 

Yah, we need more info.

John S. :D

Re: Running out of water
 

Sounds like an impeller took a crap. I've seen John S. change them in the water, in the rain in about 15 minutes!! :eek: :D

Re: Running out of water
 

Hey Happy Birthday John!!!

Re: Running out of water
 

Thanks!! :evilb: :D

What time was it that I did that? Must have been a Poker Run. HA, I'm gett'n to old to remember all these times!!

Have a great weekend!! Are you coming down for the Leukimia Poker run? We'll be there. I'll be in a 38 ZR. Look us up.

John S. :D :drink: :drink:

Re: Running out of water
 

My brother in law bought a 31 Sonic from Hugh a few years back and we took it on a sea trial and never made it out of the channel by Red Eyes before the port motor overheated.....someone left the flush cap off and she sucked air. You came down and replaced it at the dock at Red Eyes.......in the rain. :D

We may not make it to the run next weekend....I've come down with an infection in my chest and am having a hell of a time kickin' it. But we'll see what happens over the weekend.