2000 Model Penta 3.0 Engine

Shelby Ladner

Seaman Apprentice
Joined
Apr 10, 2009
Messages
48
I have found a used 2000 model Penta (GM) marine 4 cyl engine for sale. The seller says it may have blown head gasket. He was running WOT and engine bogged/sputtered. He came to stop and says later engine ran fine. No overheat,loss of oil pressure. He removed/replaced with new engine. He states that one cyl is 20 lbs low and another is 8 lbs low. He wants$450 for it and it is complete minus starter,carb,water pump, alternator. I would appreciate any/all input. I was wondering if this engine would be a good candidate to rebuild, possibly just head/gasket work, since my present 4 cyl has a cracked block?
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
71,082
Re: 2000 Model Penta 3.0 Engine

He wants$450 for it and it is complete minus starter,carb,water pump, alternator. I would appreciate any/all input. I was wondering if this engine would be a good candidate to rebuild, possibly just head/gasket work, since my present 4 cyl has a cracked block?

Ayuh,... He's sellin' a Rebuildable Core long block, not a running motor...
That's worth a Hundred, maybe 2 in My world...

Around here, a complete take-out motor, aka; a Rebuildable core, Complete with accessories, motor is worth a couple to a few hundred bucks...
That's With all the accessories...

A Complete take-out motor, Running, with a compression test to prove it's health, might bring $800. to a Grand...
 

Shelby Ladner

Seaman Apprentice
Joined
Apr 10, 2009
Messages
48
Re: 2000 Model Penta 3.0 Engine

Thanks, Bondo. I agree he's a little high for a re-buildable core since it's not complete. I may try to get him down on price. I just can't understand why he wouldn't try to repair this engine instead of replacing. It must need more than just replacing the head gasket!!!
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
71,082
Re: 2000 Model Penta 3.0 Engine

It must need more than just replacing the head gasket!!!

Ayuh,... That would be My guess... Probably a Whole Lot more...
 

fishrdan

Admiral
Joined
Jan 25, 2008
Messages
6,989
Re: 2000 Model Penta 3.0 Engine

Ayuh,... He's sellin' a Rebuildable Core long block, not a running motor...
That's worth a Hundred, maybe 2 in My world...

Yup!

As for the guy not repairing the engine and dropping in a new engine, some people are like that. They would rather spend $2000-3000 and know it's good opposed to fixing the problem for $500-1000. They look at repairing an engine as a band-aid fix and would rather spend the extra couple thousand for piece of mind. I know a lot of people like that and they look at me strange when I repair my vehicles/boat. "Why are you working on that when you could just go buy a new one." Well, cause I don't have an extra $25K burning a hole in my pocket...

Would I spend $450 on this being a cheap fix, probably not. Before buying I would slap a starter on it and run a compression test, drain oil after compression test and look for metal and water in oil. Visually inspect the engine for oil leaks, freeze cracks. I'd probably pull the head too since the seller said it most likely needs a head gasket and the head has to come off anyway. Inspect head gasket, head, cylinder walls, pistons, valves. Wave $400 at the seller and say if everything checks out and it's only a head gasket then we have a deal. Warped head -$150, f'ed up cylinder(s) -300, cracked block or water in oil -450 ($50 for you to haul it off :D). If they won't allow you to verify the condition of the engine it's just a rebuildable core, offer them $100 and roll the dice.

(oh yeah, if you do pull the head, put it back on and reinstall the push rods before leaving, you don't want the lifters rolling around in the engine and getting mixed up)
 

Shelby Ladner

Seaman Apprentice
Joined
Apr 10, 2009
Messages
48
Re: 2000 Model Penta 3.0 Engine

Thanks, Fishrdan. Good advice. I will see if he is willing to let me inspect further before offering any $. Would it have water in the oil if the head gasket went bad?
 

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: 2000 Model Penta 3.0 Engine

Would it have water in the oil if the head gasket went bad?

Marine engines seldom suffer a blown head gasket causing water in the oil. Hundreds of posters here have hoped that was the case, but it's usually a cracked block from freezing that causes water in the oil.
If the engine you are looking at has any milky oil visable on the dipstick or under the cap on the valve cover for the oil fill. RUN.....................
 
Top