Volvo 130 Seized+Milkshake

bjarnold1

Petty Officer 2nd Class
Joined
Nov 12, 2005
Messages
136
I am working on a friends boat that has a 4 cylinder Volvo Penta 130 with dual carbs. The engine is seized so I pulled the spark plugs, sprayed some WD-40 in the cylinders and tried turning it over with a wrench on the crankshaft...no luck. I pulled the dipstick out and the engine oil looks like a milkshake. Would he be looking at a new engine or just a rebuild?

Thanks
 

Lancer23

Cadet
Joined
Jun 30, 2009
Messages
8
Re: Volvo 130 Seized+Milkshake

That depends. Alumnum pistons, steel components, and cast iron blocks don't mix with water. They create an internal battery of sorts when wet and the corrosion of both starts almost immediately. Salt water is worse than fresh. Warm temperatures are worse than cold (warm temps speed up the chemical reaction). Time is your real enemy.
Only way to know for sure is to pull the engine (the quicker you do this, the better your chances for a rebuild)
The engine block will need to be bored IF you can get the pistons out. Not familiar with that engine, but the depth of the cylinder wall corrosion may exceed the max recommended overbore. If so, throw the block away.
If the oil looks like a milkshake, its likely the crank is pitted on its journals. Again, if the pitting is minor, you can get away with grinding the crank.
If its really seized, finding another motor may be cheaper and easier in the long run. If its only recently happened, you may skate by with a rebuild.
So, it depends.
Want to see how bad it can be? See attached pix. This motor was wet for about a year. Its all just junk now.
 

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ENSIGN

Lieutenant Junior Grade
Joined
Jun 21, 2009
Messages
1,179
Re: Volvo 130 Seized+Milkshake

Your beating a dead horse!!! Buy a rebuild and use the other as a anchor.
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
71,097
Re: Volvo 130 Seized+Milkshake

Would he be looking at a new engine or just a rebuild?

Ayuh,...
That question Can't be answered until the motor is Completely disassembled, Cleaned,+ On the Bench....
 

bjarnold1

Petty Officer 2nd Class
Joined
Nov 12, 2005
Messages
136
Re: Volvo 130 Seized+Milkshake

I'll let him know. He said he was on a tight budget and only wanted to sell the boat for a few hundred as-is or if it was an easy fix to just do it. On top of that I discovered the floor is rotten in the back so I think it's probably headed to the boat wrecking yard.
 

PiratePast40

Lieutenant Commander
Joined
Mar 21, 2009
Messages
1,734
Re: Volvo 130 Seized+Milkshake

It's getting tough to find replacement parts for those motors. If your're willing to spend the time, parting it out and selling on ebay may generate a nice bit of cash.
 
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