NautiqueTom
New member
Hi guys, I am new to the forum but have been using it on and off for problem solving with great results, thank you all.
I have a 2011 Crusader 6.0L in a ski boat, I am on about 650 hours now in brackish water, not heavy salt by any means. About 300 hours ago I had an overheating issue and an internal crack in one of the exhaust risers. At this time I replaced both risers with Crusader parts and gaskets and since that time the boat has been running fine. In the last 100 hours of use I noticed I was losing coolant at a steady but slow rate. I couldn't find an external leak and the performance was still 100% at all times. I did feel the exhaust smelt a bit strong. The rate of coolant loss increased recently until one morning it spat a huge amount out of the exhaust and I switched the boat off. It hasn't overheated at any time since the new risers were installed.
I figured it was a head gasket related to the previous overheat and the boat is at the shop now. The mechanic has tested the risers and again one of them has failed internally. Is this unusual? I thought the complete closed cooling system should give the exhaust components a much longer life span than 4 years and 300 hours?
My questions now are:
Could there be an underlying issue causing the repeated failure? (both risers feel the same temperature to touch)
Should I be looking at replacing the manifolds as well at this time? He says they are in reasonable shape but whilst its there I am wondering about changing it all up.
I had a look at the cooling diagram in the manual and it shows that only the tips of the risers are exposed to raw water? What is the expected lifespan on all of these components given my environment? (the boat is used regularly all year round, about 100hrs/year).
Thanks for your time
I have a 2011 Crusader 6.0L in a ski boat, I am on about 650 hours now in brackish water, not heavy salt by any means. About 300 hours ago I had an overheating issue and an internal crack in one of the exhaust risers. At this time I replaced both risers with Crusader parts and gaskets and since that time the boat has been running fine. In the last 100 hours of use I noticed I was losing coolant at a steady but slow rate. I couldn't find an external leak and the performance was still 100% at all times. I did feel the exhaust smelt a bit strong. The rate of coolant loss increased recently until one morning it spat a huge amount out of the exhaust and I switched the boat off. It hasn't overheated at any time since the new risers were installed.
I figured it was a head gasket related to the previous overheat and the boat is at the shop now. The mechanic has tested the risers and again one of them has failed internally. Is this unusual? I thought the complete closed cooling system should give the exhaust components a much longer life span than 4 years and 300 hours?
My questions now are:
Could there be an underlying issue causing the repeated failure? (both risers feel the same temperature to touch)
Should I be looking at replacing the manifolds as well at this time? He says they are in reasonable shape but whilst its there I am wondering about changing it all up.
I had a look at the cooling diagram in the manual and it shows that only the tips of the risers are exposed to raw water? What is the expected lifespan on all of these components given my environment? (the boat is used regularly all year round, about 100hrs/year).
Thanks for your time