Impeller pieces missing

V

VTBoater

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exMember
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Sep 6, 2008
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Hey guys,
Well I bought a Carver 356 pretty close to sight unseen, at a low price, but needs tlc plus some extra work. I just got it here a week ago from Arkansas, and have been extremely busy trying to get it back together and winterized. Kind of by accident (broke an impeller housing) today I got the impeller out and there were pieces missing from it. Twin mercruiser 7.4 L RWC engines. When the blades shatter, where do they go? Are they trapped in the exhaust system and I need to remove the whole exhaust from the engine?
Thanks.
James
 
You might get lucky and find them in the cooler. Take the hose off of the output on the cooler and backflush. You will be surprised at the rubber that comes out.
 
quote:
Originally posted by orboater

You might get lucky and find them in the cooler. Take the hose off of the output on the cooler and backflush. You will be surprised at the rubber that comes out.

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That. Either blocking tubes, or if small enough chunks, in the tubes. If you've got blocked tubes, chase them with a .22 rifle brush.
 
I found a bunch stuck in the small bypass in my thermostat housing. Unfortunately, I didn't find several pieces and am waiting for spring to take apart my manifolds and risers. Good luck.
 
quote:
Originally posted by VTBoater

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Good luck I know you wanted a freshwater boat but a neglected freshwater boat at bargain prices might end up being loaded with expensive hidden repairs. I wish you the best VT. Hopefully the clog will be minor and a simple back flush will bring out the missing impeller pieces.
Bill
 
opening, and inspecting the entire raw water system is normal maintainance and a good idea when buying a new to you boat. Not a big deal but important.
 
congrats on the purchase VT! Hopefully she is a diamond in the rough that needs very little $$ to make shine!
 
congrads james on your purchase. to answer your question yes you do need to go thru the cooling system but as the boat is new to you and it sounds like you have very little info on the history of the boat it would be very wise to do this. even if you find the impeller pieces at first crack you should inspect all of the raw water system including the mixing elbow/risers, Tstat and heat exchanger. it is time/$ well spent now.
 
Ususlly you do not need to take off exhaust manifolds. the pieces tend to get caught in hose connections, sharp turns, heat exchanger(if equipped), thermostat and housing riser inlets.
 
Thanks for the words of wisdom guys. Today was my last day to finish winterizing, as I got started this morning my shrink wrap guy was there and said he had to do it tomorrow or I was out of luck. Thankfully a couple work buddies of mine were there to help me today, (we work a 12 hour schedule with days off during the week) so we got the engine/ harness wiring connected up and got hose water flow going. Engines fired up and good flow, so it had to wait until spring to flush the system. Got both engines and generator oil changed and winterized today.
As to the neglected boat comment, I sure hope it turns out okay, so far mainly cosmetic work. I do wish I had a bigger budget and could have purchased a cream puff, but in the model I wanted that was tough with what I had to spend. Lots of elbow grease to come.
James
 
Not familiar with the merc engines but on my 454 crusaders I found all the pieces trapped ontop of the screen going in the oil cooler.

Congrats on the new boat now where's the pics?!!!
 
On my Mercruiser 140 Hp I found those pieces way up into the Cylinder head and manifold.

I think I might have been OK, but I put too much water pressure on the 'Ears' and drove the pieces way up into the engine.
 
I don't have any pics that I'm proud of enough to post. After a full buff and wax job in the spring and canvas on I will put up some pics.
The outside of the boat was more dirty and chalked than I expected being under a covered slip. I don't think the guy I bought it from washed it once in the 2 years he owned it. He was on a path through neglect to ruiuning the boat.
 
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