Cracked block or just cylinder head??

kjboggs

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Mar 28, 2011
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Well I got another project boat really cheap and had a lot of potential until I started it for the first time.

Started up and ran good until water started pouring out both sides if the engine! I knew there was a problem somewhere snce there was water in the oil when i changed it before starting, but was hidden. One side has a crack on the cylinder head, the other side was just coming from the plug that had popped out.

Before I drop it off at a shop this winter to get repowered with a new block or motor, could it be as simple as replacing just the cylinder head?? Or would there be more damage and a new block or engine the only option??

The crack appeard to be only on the cylinder head just above where the manifold bolts on??





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Scott Danforth

Grumpy Vintage Moderator still playing with boats
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If the heads cracked, most likely block cracked too
 

Bondo

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Ayuh,.... It appears to have frozen with water in it,...

Odds are the whole motor is junk,.....
 

kjboggs

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Mar 28, 2011
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Another question guys, on this motor can i remove the head without removing the intake manifold???
 

Horigan

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Without knowing what motor it is, hard to say, but generally not since the manifold typically bolts to the head and block...
 

Bondo

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Ayuh,.... It appears to be a 4.3l, so a V-motor, so Nope, the intakes gotta come off 1st,.....
 

shaw520

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Aug 27, 2009
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Its highly unlikely, but if you are lucky enough to not have a cracked block then you can just replace a head ,.. But I would def pressure test the block.
 

Scott Danforth

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The block core plug is pushed out in one photo. The head is cracked in one photo. Basically it's what happens when a block is not drained.

Block and heads are toast for anything except scrap iron
 
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