350 mag mpi twins with bravo 3s.
Port engine started having trouble starting when hot, had to crack the Throttle to start it. This weekend noticed some unusual sounds when starting between tuber riders.
Temp gauge did nothing out of the ordinary since 3 years Ive owned it
brought it home to look it over, went to do compression test, plugs 4&6 had water on them. Theres my problem.
pulled heads off and found this hairline crack between cylinders on the port engine.
what caused this? Random gasket failure? This doesnt seem likely as the other side has heat discoloration too and was on its way to failure.
its never overheated to my knowledge either. Could this have been a mild overheat before I bought it 3 years ago?
impellers were replaced when I bought and every season since.
the boat has ~760 hours. Freshwater only to my knowledge and the paint on the engine and bolts/nuts looks factory; leads me to believe its never been apart.
need recommendations on replacement engines. Tempted to go 383 stroker and what to do with this hunk of steel that worthless in its current state.
SNs.
Drives: 0L745506, 0L745507 2.00R
Engines: 0L643912, 0L643910
Transom: 0L838995, 0L838998
Please delete - Can't delete or the thread is deleted, so copied the text from post #4. The best I can do.
What caused this? Blown head gasket, cracked block between cylinder 4&6
Port engine started having trouble starting when hot, had to crack the Throttle to start it. This weekend noticed some unusual sounds when starting between tuber riders.
Temp gauge did nothing out of the ordinary since 3 years Ive owned it
brought it home to look it over, went to do compression test, plugs 4&6 had water on them. Theres my problem.
pulled heads off and found this hairline crack between cylinders on the port engine.
what caused this? Random gasket failure? This doesnt seem likely as the other side has heat discoloration too and was on its way to failure.
its never overheated to my knowledge either. Could this have been a mild overheat before I bought it 3 years ago?
impellers were replaced when I bought and every season since.
the boat has ~760 hours. Freshwater only to my knowledge and the paint on the engine and bolts/nuts looks factory; leads me to believe its never been apart.
need recommendations on replacement engines. Tempted to go 383 stroker and what to do with this hunk of steel that worthless in its current state.
SNs.
Drives: 0L745506, 0L745507 2.00R
Engines: 0L643912, 0L643910
Transom: 0L838995, 0L838998
Please delete - Can't delete or the thread is deleted, so copied the text from post #4. The best I can do.
What caused this? Blown head gasket, cracked block between cylinder 4&6
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