"Hello everyone,
I receive
"Hello everyone,
I received a tip from a Uniflite owner about this site and I can see right away how much I can learn from this group. Great topics of discussion!
I'm getting fairly stressed out with a couple of recently overhauled 318's in my 31'. All brand new manifolds,elbow's,risers and mounting kits yet on the first (starboard engine)start up I continuously am getting what appears to be fresh cooling water (about two tablespoons in each side) that is dark and contaminated with carbon. Upon shutdown I remove the bottom plug at the elbows and it drops out of the exhaust port into my hand. I was suspicious when on the second and third startups the tell tale rattle of a piston trying to compress water was evident. It would quickly spit it out and proceed to run like a charm thereafter, until I shut it down and pull the elbow plugs again and experience another couple of tablespoons of water in each elbow. I am suspicious that the o rings supplied with the new risers are not thick enough and some cooling water is getting over the orings into the exhaust ports. The boat is out of the water so cooling is via a garden hose to the raw water pump then via the heat exchangers to the front of the manifolds as well as to the elbows via the transmission cooler. Would anyone have any thoughts as to what might be going on here? I have had it suggested to me that there may be a set of brand new but faulty manifolds on my engine but I just cannot believe I would be so unlucky as to have two on the same engine, nahhhh! Could it be related to too much pressure on the system with the garden hose. Surely a sherwood or jabsco pump could provide the same levels of pressure at high RPM. Although I am stumped, I am also stubborn and will not let the culprit evade me much longer. Maybe with your help I can get to the bottom of this. Hope to hear back from some of you soon.
Thanks for your time
Don"
I receive
"Hello everyone,
I received a tip from a Uniflite owner about this site and I can see right away how much I can learn from this group. Great topics of discussion!
I'm getting fairly stressed out with a couple of recently overhauled 318's in my 31'. All brand new manifolds,elbow's,risers and mounting kits yet on the first (starboard engine)start up I continuously am getting what appears to be fresh cooling water (about two tablespoons in each side) that is dark and contaminated with carbon. Upon shutdown I remove the bottom plug at the elbows and it drops out of the exhaust port into my hand. I was suspicious when on the second and third startups the tell tale rattle of a piston trying to compress water was evident. It would quickly spit it out and proceed to run like a charm thereafter, until I shut it down and pull the elbow plugs again and experience another couple of tablespoons of water in each elbow. I am suspicious that the o rings supplied with the new risers are not thick enough and some cooling water is getting over the orings into the exhaust ports. The boat is out of the water so cooling is via a garden hose to the raw water pump then via the heat exchangers to the front of the manifolds as well as to the elbows via the transmission cooler. Would anyone have any thoughts as to what might be going on here? I have had it suggested to me that there may be a set of brand new but faulty manifolds on my engine but I just cannot believe I would be so unlucky as to have two on the same engine, nahhhh! Could it be related to too much pressure on the system with the garden hose. Surely a sherwood or jabsco pump could provide the same levels of pressure at high RPM. Although I am stumped, I am also stubborn and will not let the culprit evade me much longer. Maybe with your help I can get to the bottom of this. Hope to hear back from some of you soon.
Thanks for your time
Don"