G'day.
I have fitted 2 brand new 315hp carbaretted 5.7lt 2007 marine power engines into my aussie built 26ft savage.I imported the engines over to australia myself from the USA.
We have no dealers over here and to get any imformation is very difficult,hence i am on this great website.
One of my engines (52 hrs now) is overheating 210F at idle,when i do 2800revs or there about the engine cools down to 160F,normal running temp,(tested with laser probe aswell).After shut down 30mins and removing the cap,the heat exchanger needs to be toped up with 3.5lts of coolant.I have checked all hoses and right around the engine for leaks,i have not found a leak and all is dry everywhere.I have pressure tested the heat exchanger to 15lb hold pressure and detected no leaks.I checked the impellar and it is 100% good condition.The engine,hoses and everything else seems to be all fine.
One thing i did notice was the new flooring hatches are 3 large piece sections,one of them over the problem engine was rubbing against the heat exchanger (radiator) cap and i noticed a leak from the cap.I need to replace the cap,what type should i use,the one's i have now have no imformation on them.I have fitted a 13lb type but i don't get any water going out as it heats and back in when it cools from the resevior.I do not know whether it is a "recovery" type (overflow type) or just a "standard" type,all i know it is a 13lb and i do not even know if a 13lb is correct.I saw 7lb,15lb,16lb etc,I just guessed 13lb on average.
I need help on what "lb" cap i need and if i need the "recovery" type cap,which i think i do.
If the cap i have on at the moment is a "standard" 13lb,would it harm the engine,because i have run it for 1 hr with no overheating issues "but" not water in and out of the resevior.help!!!
I have fitted 2 brand new 315hp carbaretted 5.7lt 2007 marine power engines into my aussie built 26ft savage.I imported the engines over to australia myself from the USA.
We have no dealers over here and to get any imformation is very difficult,hence i am on this great website.
One of my engines (52 hrs now) is overheating 210F at idle,when i do 2800revs or there about the engine cools down to 160F,normal running temp,(tested with laser probe aswell).After shut down 30mins and removing the cap,the heat exchanger needs to be toped up with 3.5lts of coolant.I have checked all hoses and right around the engine for leaks,i have not found a leak and all is dry everywhere.I have pressure tested the heat exchanger to 15lb hold pressure and detected no leaks.I checked the impellar and it is 100% good condition.The engine,hoses and everything else seems to be all fine.
One thing i did notice was the new flooring hatches are 3 large piece sections,one of them over the problem engine was rubbing against the heat exchanger (radiator) cap and i noticed a leak from the cap.I need to replace the cap,what type should i use,the one's i have now have no imformation on them.I have fitted a 13lb type but i don't get any water going out as it heats and back in when it cools from the resevior.I do not know whether it is a "recovery" type (overflow type) or just a "standard" type,all i know it is a 13lb and i do not even know if a 13lb is correct.I saw 7lb,15lb,16lb etc,I just guessed 13lb on average.
I need help on what "lb" cap i need and if i need the "recovery" type cap,which i think i do.
If the cap i have on at the moment is a "standard" 13lb,would it harm the engine,because i have run it for 1 hr with no overheating issues "but" not water in and out of the resevior.help!!!