head gasket
#1
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Join Date: Jan 2007
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head gasket
hey guys,
i took my boat out with the new 509 in it yesturday and it works great,after about 20minutes i noticed the temp gauge rising so i stopped and looked under the hatch to find the left head gasket leaking ans spraying water out from between the head and block between #1 and 3 cylinder and gasket gone right there,any ideas?i almost have this head off,i might pull both heads though,motor was just assembled???????????????
i took my boat out with the new 509 in it yesturday and it works great,after about 20minutes i noticed the temp gauge rising so i stopped and looked under the hatch to find the left head gasket leaking ans spraying water out from between the head and block between #1 and 3 cylinder and gasket gone right there,any ideas?i almost have this head off,i might pull both heads though,motor was just assembled???????????????
#2
Charter Member #1171
Charter Member
what gen block,,,, original heads? same gen heads as block?
correct head gaskets?
correct head gaskets?
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#4
Charter Member #1171
Charter Member
when you get the heads off see how the gasket lines up to the water jackets,,,, common cause of leaks if the port is very close to the sealing edge
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I want to live in a world where a chicken can cross the road and not have its motives questioned.
I want to live in a world where a chicken can cross the road and not have its motives questioned.
#5
Registered User
So many possibilities...
I'd look at the wrong head gasket to start. Remove the head bolts with a torque wrench set to about 65 ft/lbs. That will tell you if one of the bolts was missed during assembly or if one (or more) has a problem. Block deck needs to be checked with a machinists straghtedge and a feeler gauge as do the head surfaces.
Are the heads the original (real) Pro Toplines or are they the ripoff one's they're selling on Ebay under that name?
I'd look at the wrong head gasket to start. Remove the head bolts with a torque wrench set to about 65 ft/lbs. That will tell you if one of the bolts was missed during assembly or if one (or more) has a problem. Block deck needs to be checked with a machinists straghtedge and a feeler gauge as do the head surfaces.
Are the heads the original (real) Pro Toplines or are they the ripoff one's they're selling on Ebay under that name?
#6
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you will need to re-torgue after warning the engine and letting it cool...but a gen V and those heads require a certain head gasket, double ck that, read my earlier reply on head gaskets also...Rob