Mercruiser 4 cyl cracked head

Mik

Cadet
Joined
Aug 6, 2004
Messages
28
We've got a 85 4 cylinder 140 hp 140 Liter Mercruiser that started having an idle problem. Compression check showed 60 lbs on #2 and #3. Removing the head confirmed my suspicions that the head gasket was blown. Further inspection shows a hairline crack between the two cylinders. <br /><br />Is there anything that can be done, short of replacing the head?<br /><br />Can I put some JB Weld, or something into the crack to make it last a while longer, at least through the season?<br /><br />Mik
 

Trent

Captain
Joined
Nov 17, 2001
Messages
3,333
Re: Mercruiser 4 cyl cracked head

Nope... New or rebuilt head is required.
 
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