Finally got boat in water, 2 problems

hblair

Seaman Apprentice
Joined
Mar 26, 2010
Messages
39
Hi guys, finally got the glasstream seaquest in the water Sunday afternoon. It didn't go very well. Boat looks good, Boat floated, which is good, but I discovered a couple of probs....

The boat launch was busy, so I planned to motor a couple hundred yards up river and unscrew the water intake hose going into the engine to be sure the impeller was putting water to the water pump. Well, in the procees of motoring up the river, I went almost full throttle to try to plane the boat, boat didn't want to plane (potential prop discussion another day) I had the engine cover off, and glanced back at the engine and saw a little smoke, then looked at the temp guage pegged out, killed the motor from almost full throttle. Didn't want to do damage. Let the engine sit fifteen minutes and was gonna motor over to the ramp, but the engine was locked. Wouldn't do anything, starter would engage but their was resistance.

So, got a tow to the ramp, went back and took the drive off, tried turning the motor over, still locked. oh crap, I'm thinking I seized my 1200 dollar worth of parts and machine work.

I figured I might as well pull the plugs, did that, hit the starter and it was like old faithful out of all cylinders. Engine was free. I went ahead and pulled the engine out of the boat, pulled the intake and heads and oil pan to dry it out. There was a chunk of steel in the oil pan (unrelated to this drama) It was a lobe off a cam. Pulled the cam and it was missing small plugs here and there, and this one big chunk. Anmyways, bad casting on the sealed power cam, they're gonna warranty it.

As for the water, I just set my manifolds and risers up and filled em with water, the water chambers are completely full, but not water in the exhaust area at all. I think my manifolds and risers are fine.

This is the boat I took the old 888 setup, and had a 302 built to go in it. The Y pipe DOES NOT have any flaps in the tops of them like the chevy 350 setup had. Question, is this right? Are there not supposed to be any flaps? What keeps the water out?

Did water come in because my exhaust system was dry and going from almost full throttle to nothing? every cylindeer was full of water. I'm convinced it came from the back of the boat thru the exhaust when I killed it. flaps?
 

jtmarten

Master Chief Petty Officer
Joined
Aug 2, 2004
Messages
825
Re: Finally got boat in water, 2 problems

The Y pipe DOES NOT have any flaps in the tops of them like the chevy 350 setup had. Question, is this right? Are there not supposed to be any flaps? What keeps the water out?

Did water come in because my exhaust system was dry and going from almost full throttle to nothing? every cylindeer was full of water. I'm convinced it came from the back of the boat thru the exhaust when I killed it. flaps?

The water rushed in because nothing was there to stop it. The Y pipe should have shutters to keep the water out when you stop quickly as you did.
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
71,081
Re: Finally got boat in water, 2 problems

The Y pipe DOES NOT have any flaps in the tops of them like the chevy 350 setup had. Question, is this right? Are there not supposed to be any flaps? What keeps the water out?

Ayuh,... On the old 3 piece Y-pipes, they're in the Bottom piece....
 

hblair

Seaman Apprentice
Joined
Mar 26, 2010
Messages
39
Re: Finally got boat in water, 2 problems

Thanks guys, I'll check the bottom piece.
 

hblair

Seaman Apprentice
Joined
Mar 26, 2010
Messages
39
Re: Finally got boat in water, 2 problems

Pulled the Y pipe, the flaps were so gone it was hard for me to tell where they had been. I bought and installed some thru hull exhaust with flaps on the tips. I also installed a new water pump impeller, had a new gimbal bearing installed and various other things. I'm looking to put the boat back in the water thursday and friday for a couple shakedowns, and maybe take the wife out saturday. Thanks for the help guys.
 

hblair

Seaman Apprentice
Joined
Mar 26, 2010
Messages
39
Re: Finally got boat in water, 2 problems

Well, took the boat out yesterday morning. Purred like a kitten. Thru hull exhaust was barely audible from inside the boat. I was really happy with how it ran. We were running 35 mph with about 80% throttle GPS. This is a HEAVY boat.

The batteries started getting weak though. I had put a new three wire alternator in the boat. It wasn't charging right. I had it tested and it was fluctuating a lot, so I put a new one wire marine job in there.

Also, the fuel pump quit pumping, so replaced it with a new one.

I got the boat out again yesterday evening. It didn't have the power it had earlier. I noticed after we were planed off that there was what sounded like valve or lifter noise. I then looked at the oil pressure, zero, so I killed the engine. We then proceeded to float downstream. Finally got the boat out of the water about dark last night. Pulled the boat to the shop here. Didn't look at it til this morning. I pulled the oil filter off and cut it open. It's full of chrome moly. Looks like brand new main bearings went south? Don't know why yet, I'll pull the motor and see this evening.
 
Last edited:

haulnazz15

Captain
Joined
Mar 9, 2009
Messages
3,720
Re: Finally got boat in water, 2 problems

Yes, on the 888/233, the flappers are located down at the union, not at the top of each tube. I know you know this, but I'm just verifying this info for people who search in the future. I'd say you have some major issues if you chewed up a cam (yes I know, bad casting) and are still having metal shavings everywhere.

Since the fuel pump is mechanical, it runs off of the cam. That's a more likely issue than the pump going bad, especially when paired with the oil pump stopping which is also cam-powered.
 

CheapboatKev

Vice Admiral
Joined
Oct 4, 2008
Messages
5,813
Re: Finally got boat in water, 2 problems

Yes, on the 888/233, the flappers are located down at the union, not at the top of each tube. I know you know this, but I'm just verifying this info for people who search in the future. I'd say you have some major issues if you chewed up a cam (yes I know, bad casting) and are still having metal shavings everywhere.

Since the fuel pump is mechanical, it runs off of the cam. That's a more likely issue than the pump going bad, especially when paired with the oil pump stopping which is also cam-powered.

Thats exactly what I thought..If you know/suspect the cam from the metal debri/shavings..And coinky-dinky the 2 items fail that run off of the cam...Why rush out and buy a new FP? Well least ya have a spare..;)
 

HT32BSX115

Supreme Mariner
Joined
Dec 8, 2005
Messages
10,083
Re: Finally got boat in water, 2 problems

I had the engine cover off, and glanced back at the engine and saw a little smoke, then looked at the temp guage pegged out, killed the motor from almost full throttle.

NEVER kill the engine from full throttle!!!!! Always pull it back to idle before shutting down or you risk the water ingestion problem you had.



 

hblair

Seaman Apprentice
Joined
Mar 26, 2010
Messages
39
Re: Finally got boat in water, 2 problems

The old fuel pump was bad. I took it apart. It's one of the old rebuilable ones. The new one pumped fuel.

As far as killing the engine, I didn't communicate well, I pulled back on the throttle then turned the switch. That's what I meant by "kill".

Thanks for the input guys.
 

HT32BSX115

Supreme Mariner
Joined
Dec 8, 2005
Messages
10,083
Re: Finally got boat in water, 2 problems

Glad you're getting it figured out!

That's what I meant by "kill".


I mentioned that above for others too.....a LOT of people do not know that you should never "turn-off" the key while underway.....:D


Cheers,


Rick
 

Doernuth

Petty Officer 1st Class
Joined
Jul 6, 2010
Messages
332
Re: Finally got boat in water, 2 problems

Did you do a proper start up on the rebuilt engine? Almost sounds like it wasn't done properly which can cause all kinds of mechanical problems including blown bearings and cams....
 

hblair

Seaman Apprentice
Joined
Mar 26, 2010
Messages
39
Re: Finally got boat in water, 2 problems

What do you mean by proper start?

Are you talking about building up oil pressure before the engine is run? I ran a drill on the oil pump for a few minutes after the engine was together. After I had the engine ready to run I let it run at a high idle for a while. The engine was run 45 minutes or so altogether before I ever put it in the water.
 

fat fanny

Lieutenant Commander
Joined
Feb 9, 2006
Messages
1,935
Re: Finally got boat in water, 2 problems

Man you sure are dropping some coin on that rig! I do hope you get it figured out this time I hate to see anyone go through what you are. So whats your next plan of atteck after the last set back? I would proceed with caution double checking everything. Good luck!!
 

hblair

Seaman Apprentice
Joined
Mar 26, 2010
Messages
39
Re: Finally got boat in water, 2 problems

Yes, too much coin I know. But I'm past the point of no return. I gotta get this thing done before extended project fatigue sets in. I'm not burnt out yet. I've got some good help on the boat that keeps me motivated.

Here's the boat, when I said heavy this is what I mean. the hull is 26', the LOA of the boat is 29'3"...
http://www.blairautobody.com/Heaths stuff/seaquest/HPIM5255.JPG

Valvetrain looked ok except for some shiny stuff...
http://www.blairautobody.com/Heaths stuff/seaquest/HPIM5256.JPG

The oil pump shaft was fused into the lovely "mercruiser" distributor. I'm assuming it was slipping. I'll check into it further tomorrow...
http://www.blairautobody.com/Heaths stuff/seaquest/HPIM5258.JPG

The damage is pretty obvious here. Don't know if it spun or not. I'm assuming it did. I'm gonna let the machinist take the caps off.
http://www.blairautobody.com/Heaths stuff/seaquest/HPIM5257.JPG
 
Top