Cracked Mercruiser 165 block

ddrieck

Senior Chief Petty Officer
Joined
Jul 12, 2007
Messages
663
Guy here in my town is selling his old 1978 190 SS for $200 due to not winterizing last fall and cracked the block as seen in the picture. I am wondering if this area can be patched up? Just not sure what the inside area looks like on a Mercruiser 165.
I have in the past brazed and also JB welded an couple Mercruiser 140s but never delt with a 165.
Deck and transom are solid and should make a good fishing rig
 

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04fxdwgi25

Chief Petty Officer
Joined
Mar 25, 2022
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537
Pretty decent looking deck boat for $200. Could be a great fishing boat.

If transom / hull isn't bad, I would grab it and just plunk another engine in it for that money.
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
70,953
Guy here in my town is selling his old 1978 190 SS for $200 due to not winterizing last fall and cracked the block as seen in the picture. I am wondering if this area can be patched up? Just not sure what the inside area looks like on a Mercruiser 165.
I have in the past brazed and also JB welded an couple Mercruiser 140s but never delt with a 165.

Deck and transom are solid and should make a good fishing rig
Ayuh,..... 'bout the same as the 140, only 2 cylinders longer,.....

If it's cracked only to the outside,..?? no problem,...
But, there's usually another crack opposite that one, into the oil cavity,....
 

dubs283

Vice Admiral
Joined
Jul 27, 2005
Messages
5,322
Thats a shame

Gm inline 6 is a wonderful motor.

Based on how clean the package appears in the (fuzzy) pics it might be worth sourcing a different long block
 

ddrieck

Senior Chief Petty Officer
Joined
Jul 12, 2007
Messages
663
Ayuh,..... 'bout the same as the 140, only 2 cylinders longer,.....

If it's cracked only to the outside,..?? no problem,...
But, there's usually another crack opposite that one, into the oil cavity,....
I will be headed over to look it over today
Fingers crossed there is no oil milkshake
 

ddrieck

Senior Chief Petty Officer
Joined
Jul 12, 2007
Messages
663
Will be a no go for me on this rig, Full milkshake in the oil pan
 
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