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Tech: At wits end with an overheating motor, long post
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<blockquote data-quote="customcj7" data-source="post: 658252" data-attributes="member: 3103"><p>Firing order is right for the 351w, checked that more times than I can count. Can't do the intake crossover as the ports are for my heater hoses.</p><p></p><p>Overflow never filled, but would get the occasional fluid in it from time to time before. I haven't run it with the system pressurized yet as I was still trying to bleed bubbles and didn't think that would affect it. </p><p></p><p>215 is hot for this motor. This motor is designed to run 160-180 from freshwater intake (ski boat motor). 180-200 is normal operating temp for a Ford 351w.</p><p></p><p>I'm going to watch the bubbles intently and see. It might just be head gaskets. But with this old girl, that's one of those things I really didn't want to pull apart unless I had to. My concern is that with a leak down test, on a 1989 engine, I might just get a lot of cylinder/ring leakage and won't be able to tell if it's head gasket related. How do you know if it's your head gasket from a leak down test?</p><p></p><p>EDIT: Perhaps a cooling system pressure tester might be the better route. That would in theory find it as well wouldn't it? Without the risk of possible blow-by giving a false reading.</p></blockquote><p></p>
[QUOTE="customcj7, post: 658252, member: 3103"] Firing order is right for the 351w, checked that more times than I can count. Can't do the intake crossover as the ports are for my heater hoses. Overflow never filled, but would get the occasional fluid in it from time to time before. I haven't run it with the system pressurized yet as I was still trying to bleed bubbles and didn't think that would affect it. 215 is hot for this motor. This motor is designed to run 160-180 from freshwater intake (ski boat motor). 180-200 is normal operating temp for a Ford 351w. I'm going to watch the bubbles intently and see. It might just be head gaskets. But with this old girl, that's one of those things I really didn't want to pull apart unless I had to. My concern is that with a leak down test, on a 1989 engine, I might just get a lot of cylinder/ring leakage and won't be able to tell if it's head gasket related. How do you know if it's your head gasket from a leak down test? EDIT: Perhaps a cooling system pressure tester might be the better route. That would in theory find it as well wouldn't it? Without the risk of possible blow-by giving a false reading. [/QUOTE]
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