1973 Seaport V8 Jet Drive

miichael18

Petty Officer 2nd Class
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Mar 24, 2004
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161
I am wanting to get some information on a boat i have had for around 6 years now. Its a 1973 Seaport 23 foot cabin cruiser. The engine is disassembled and all jet drive parts are just laying in the boat. All cables are stuck and the manifolds look like they need to be replaced. The engine itself is not fixable. I was wanting to try to fix the boat but i dont know anything about boats. I have built car engines and i know that a boat engine has different crank, cam, distributor, carb and all. I want to get info on if this boat would be worth "trying" to fix up? I have no money in this boat as of now. Hull is in good shape floor is solid. all it really needs is engine, drive train, and all cables. The engine is a small block Chevy. It has a propeller inside a housing that sucks up from bottom like a jet ski. I'm wanting to buy a repair manual but i dont know what i need to buy it for. Its not a stern drive so what is it? and is it worth fixing? assuming all motor parts are bad how much am i looking at for a new motor and complete jet drive system with all cables, etc.? i wouldn't even attempt to fix this boat up but the hull is GREAT all fiberglass no wood. Floors is fiberglass also. I got the boat with everything disassembled and half the motor parts missing. any info on what kind of motor/drive train system would be great. also if its worth fixing or just junk.
 

miichael18

Petty Officer 2nd Class
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Mar 24, 2004
Messages
161
Re: 1973 Seaport V8 Jet Drive

could i change the boat and make it have a outboard motor? i have a 125HP engine would that be enough to move it with the right prop? how much you think it cost to have it converted from inboard to outboard professionally done?
 

Bondo

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Re: 1973 Seaport V8 Jet Drive

how much you think it cost to have it converted from inboard to outboard professionally done?
Probably Considerabily More than it'll be Worth.........<br /><br />Freshening,+ Replacing what's Already There is the Best Way for you to Go Boating.......<br /><br />'Course,....... You'll Still Probably have Way More than it's worth Into It...........<br /><br />Don't Know,...... Can't See It........
 

rodbolt

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Sep 1, 2003
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20,066
Re: 1973 Seaport V8 Jet Drive

ohhhh thats the beauty about a jet drive, especially with dry stack exhaust.<br /> thepower that can be made.<br /> who manufactured the jet pump ?
 

miichael18

Petty Officer 2nd Class
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Mar 24, 2004
Messages
161
Re: 1973 Seaport V8 Jet Drive

im not sure who made the jet drive. Im trying to find a manual on a chevy engine with a jet drive but i cant find anything. all i can find is stern drives and outboards. Any help??
 

rodbolt

Supreme Mariner
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Sep 1, 2003
Messages
20,066
Re: 1973 Seaport V8 Jet Drive

the engine was manufactured by GM and marinized by some company.<br /> the jet was manufactured by a seperate company and will have nothing to do with GM.<br /> your engine manual will be seperate from the jet manual.
 

miichael18

Petty Officer 2nd Class
Joined
Mar 24, 2004
Messages
161
Re: 1973 Seaport V8 Jet Drive

so how will i need to find out who made my jet drive? theres some numbers on a few parts but i didnt see a name. where would the name be?
 

Bondo

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71,103
Re: 1973 Seaport V8 Jet Drive

The Odds are it's either a Berkley,.... Or a Jacuzzi........<br />Google them Up......<br /><br />You'll find a path to 1 that Looks like Your's.......
 

miichael18

Petty Officer 2nd Class
Joined
Mar 24, 2004
Messages
161
Re: 1973 Seaport V8 Jet Drive

where can i find a repair manual for either of them 2? i cant find anything on them either. I found there website but all i see is new units. pretty sure its a berkley but i cant find a repair manual on it
 

Bondo

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71,103
Re: 1973 Seaport V8 Jet Drive

Hot Boats magazine has a forum on Jet Drive Boats,......<br /><br />I haven't been over there in awhile,.... But there used to be Alot of Learning available over there..........<br /><br />Google should be able to point you in the right direction.......
 

Don S

Honorary Moderator Emeritus
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Aug 31, 2004
Messages
62,321
Re: 1973 Seaport V8 Jet Drive

Did you contact SeaSport like I suggest earlier in this thread? May save you a lot of time.
 

miichael18

Petty Officer 2nd Class
Joined
Mar 24, 2004
Messages
161
Re: 1973 Seaport V8 Jet Drive

The boat is not a seasport it is a seaport. i did contact them but they knew nothing about the boat because its a seaport.
 
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