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  • #160824

    Jason Leslie
    Participant
    Vessel Name: PierFection
    Engines: Detroit 6V92TA
    Location: Channel Islands, California
    Country: U.S.A.

    Just to clarify, you are sure you have two 12v batteries in series (+ of one battery connected to the negative of the other, then + of other battery to your load, and your negative of the other battery to your boat ground). This will in fact make the system a 24v system and must have a 24v alternator. My QSC 500 has two 12v batteries in parallel meaning both positives are connected to each other and both negatives are connected together causing double the amperage of the system but the system is still only a 12v system (but with twice the amperage). I’m only asking because you stated you recently acquired the vessel. Some people asume that two batteries means 24 volts. I’m hoping you mechanic is smart enough to figure that out and would have installed a 24v alternator if the system is wired as a 24v system. Any ways I wish you luck. It is easy to check by looking at your battery configuration or using a voltage tester. 

    #156994

    Jason Leslie
    Participant
    Vessel Name: PierFection
    Engines: Detroit 6V92TA
    Location: Channel Islands, California
    Country: U.S.A.

    I have the same set up on my QSC 500. I have always been happy that when I pull the filters off the oil is always a couple inches below full on the filter. I believe it does do a little bit of siphoning back out. It comes in really handy because you can just unscrew the filter and even tilted a little bit to remove it without any oil dumping out. My filters are not all the way down at half level or below. But they are a couple inches below full. If this helps. 

    #155252

    Jason Leslie
    Participant
    Vessel Name: PierFection
    Engines: Detroit 6V92TA
    Location: Channel Islands, California
    Country: U.S.A.

    No problem, I hope that is all that is going on. Mine do this all of the time. However mine are equal between starboard and port. Check your zincs in a month or two and see if you have equal sacrifice going on. Normally the fuel/oil cooler zincs will dissolve much faster than the aftercooler and heat exchanger zincs by 2-3:1 rate because they are much smaller. If your port is burning through the zincs faster than the starboard check any loose wiring and or corrosion on any wires on that motor. You might have sone stray currents that are eating up the zincs on that motor faster than the other.

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    #155218

    Jason Leslie
    Participant
    Vessel Name: PierFection
    Engines: Detroit 6V92TA
    Location: Channel Islands, California
    Country: U.S.A.

    If it is not oily and floating on the surface, my guess is that your zinc decomposition is coming out as a cloud at first start up. Mine do this if it has sat for a long period. Depends how long it has sat. If only one is doing it the other might have no zinc left or the one engine has more stray electric current to it and is eating up the zinc.

    #153482

    Jason Leslie
    Participant
    Vessel Name: PierFection
    Engines: Detroit 6V92TA
    Location: Channel Islands, California
    Country: U.S.A.

    Additional pictures

    1 user thanked author for this post.
    #153478

    Jason Leslie
    Participant
    Vessel Name: PierFection
    Engines: Detroit 6V92TA
    Location: Channel Islands, California
    Country: U.S.A.

    So not being able to find a location for an oil test port I stopped by Tony’s shop. Tony advised me to look about 4 inches from where the oil pan meets the block in a horizontal line from front to rear. He said there are several Allen key plugs along that line and those are the main oil galley. I found one that was in front of the original sending unit that is bad. However, it is about a half inch diameter just like the sending unit. The oil pressure manual gauge that I purchased is a quarter inch thread. So I located an additional plug and pulled that off. Check the oil pressure at this location and the pressure is good. Here is photos in case someone is looking for a place to put an oil pressure sending unit on their QSC. 

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    #152362

    Jason Leslie
    Participant
    Vessel Name: PierFection
    Engines: Detroit 6V92TA
    Location: Channel Islands, California
    Country: U.S.A.

    I tried to update my profile to change the Detroit 6V92 to Cummins QSC500 but I could not find a way to change it. Is that something that is possible?

    Well the Detroits in this boat have historically been rebuilt at 2,500 hours for the history of the boat. They were oil leakers no matter what. I was always trying to find new areas to pad with oil diapers to slow down how much oil ended up getting to the bottom of the engine before it dripped on the large diapers under the engines (the under engine pads were changed every couple of trips). The Detroit’s had a better sound if you are someone that enjoys listening to a couple of Harley Davidsons at 4:00am on a quiet dock when preparing to go fishing. Unfortunately most live aboards at my previous dock did not have the same application. The Detroits had their own obnoxious diesel smell to them all day every day while under way. However I came to enjoy it as the familiar smell and it became the familiar smell of incredible day of fishing.

    The Cummins have a bit over 2,000hr on them right now and I’m happy that they are soon to reach Broken In status not broken down or in need of an overhaul. The historical problems with the Detroits was they just could not handle the high HP and heat for more than 2,500hr and the wet liners with O-rings seemed to be the weakest link in them. I’m hoping to get 15,000-20,000 out of the QSC’s. But even if they only last 10,000hr I will still be way ahead of the game over Detroit. I Have the fresh water flush that myself and your guys designed. The boat has two 80 gallon freshwater tanks that are interconnected. The engines each have like 1.25” fittings off of each engines seacock that connects to the fresh water tanks and have ball valves. After I return to the dock I leave the engines running and head to the engine room. I open the ball valves allowing the engine to suck the fresh water from my tanks, then close the sea cocks and allow full flow from the tanks through the engines. Note.. I open the fresh water cap, put the dock fresh water hose in the filler and turn water on full prior to going to the engine room. This keeps the fresh water tanks from having a Titanic sub implosion. 

    My zincs get changes about every year due to deposits not from decomposing. We pulled the aftercoolers to service them on the bench and looks like that might change to every 4-5 years because they were spotless. <br /><br />The motors are virtually spotless, they do not leak any oil, they do not stink, they are very quiet in comparison, my dock mates say they sound great, and they get better fuel economy. <br /><br />

    Things I like most are they are much smaller, lighter, narrower (much more engine room area to work in), parts are much lighter and easier to change and service. Parts are all available over the counter and to me it’s a much simpler motor than the Detroits. I know the QSC is a much more complicated engine in the way of electronics and sensors but it seems to have much fewer complicated parts than the Detroits. The Detroits had so many moving parts that were all interconnected like a finely tuned pocket watch. From crank shaft to fuel racks, mechanical spinning cable tachometer that drove a mechanical engine synchronization balancing a wheel between the speed difference between each tach drive cable. It was getting very hard to find a mechanic that could really work on the Detroits like an old clockmaker Detroit mechanics of yesteryear are all retiring. If you find a good one he is backed up an is paid very well for his almost obsolete skills. I can troubleshoot most problems with the QSC’s (but fortunately I have none) based on the huge library of information on your site and the assistance you provide on you forums. I am very fortunate to live and have my boat docked less than 10 minutes from you and your team. <br /><br />

    The Bluefin just popped up a week ago backside of our island and they have been the larger grade. I just broke my leg and am missing out on the close to home action. 

    #152252

    Jason Leslie
    Participant
    Vessel Name: PierFection
    Engines: Detroit 6V92TA
    Location: Channel Islands, California
    Country: U.S.A.

    My hat is off to you for your efforts. Most people have no idea what is going on down in their engine room. They just fire it up, drive it, and put it away. The best part about this group, and Tony is that everyone is dedicated to doing the best job they can to maintain and prolong the life of their equipment. The fact is, these systems are not just to move you from point A to point B, but they are actually a life support for you and your family as you travel at sea. Keeping your equipment is in top running condition just might keep you off of the rocks. Nothing like having a mechanical failure as you are slow trolling past a reef (or boiler rocks) at the island, or having a shut down as you are approaching the break wall on a stormy afternoon and you are entering the harbor. You left out the best picture of the all in your search for identification of the water source…. I want to see the picture of you licking the water off of the fiberglass stringer.  My hat is off to you for your dedication.    

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    #132840

    Jason Leslie
    Participant
    Vessel Name: PierFection
    Engines: Detroit 6V92TA
    Location: Channel Islands, California
    Country: U.S.A.

    You might have one cap that has a good seal and one that is on its way out. Try swapping caps from one engine to the other and see if you problem changed location. Then replace the bad cap. I had one cap that failed with an engine that was less than two years old (it just happens). Very easy to troubleshoot on a twin engine boat.

    1 user thanked author for this post.
    #123014

    Jason Leslie
    Participant
    Vessel Name: PierFection
    Engines: Detroit 6V92TA
    Location: Channel Islands, California
    Country: U.S.A.

    By the way how do you like the Reverso oil change system?

    #25804

    Jason Leslie
    Participant
    Vessel Name: PierFection
    Engines: Detroit 6V92TA
    Location: Channel Islands, California
    Country: U.S.A.

    Wow, from the looks of the paint on those engines, you have to appreciate those Cummins motors. For the past 15 years and 750hr of use they have been saying I’m Giving You All I’ve Got Captain. But the previous owner/operator didn’t care to unload those engines and give them a breath of cool air, and easier work load. Glad you care and are willing to make it right. Seriously, they have been through a lot and have survived a crappy exhaust install as well. Correct the obvious and they will be so happy with their new owner they might return the favor with many more years of happy trouble free service.

    #25399

    Jason Leslie
    Participant
    Vessel Name: PierFection
    Engines: Detroit 6V92TA
    Location: Channel Islands, California
    Country: U.S.A.

    I see a future in photography and historian for you. If you look at about 99% of the posts on this site where people are looking for assistance, you will see the same response, “CLEAR IN FOCUS PICTURES OF THE ENTIRE ENGINE INSTALLED FROM ALL ANGLES AS IF I WAS THERE, CPL NUMBERS AND SERIAL NUMBERS, HISTORY OF USE, WHAT IS YOUR RPM WOT IN GEAR FULLY LOADED NOW AND BEFORE PROBLEM, WHEN WERE YOUR AFTERCOOLERS TAKEN OFF AND SERVICED PER PROTOCOL?).

    I’m just trying to save Tony some time.

    #17952

    Jason Leslie
    Participant
    Vessel Name: PierFection
    Engines: Detroit 6V92TA
    Location: Channel Islands, California
    Country: U.S.A.

    Ok, I’m a serious follower and this will be my first post. How about you drill out the stud, tap it for a much smaller bolt and then reduce the ring size on the cable and remount it to the existing stud. You should be able to get the same surface area and power disbursement through the stud. 

    #16935

    Jason Leslie
    Participant
    Vessel Name: PierFection
    Engines: Detroit 6V92TA
    Location: Channel Islands, California
    Country: U.S.A.

    I second the above post (or is it the below post since we are working backwards). We are fishermen and or boaters and we will resist change even if it is for the better. That being said I was confused and frustrated after trying to follow a few longer topics that I was following. It just does not flow. Just my opinion.

    #16934

    Jason Leslie
    Participant
    Vessel Name: PierFection
    Engines: Detroit 6V92TA
    Location: Channel Islands, California
    Country: U.S.A.

    Second what the above poster posted. Or is it the below poster since we are working backwards now? It worked just fine before, and remember we are fishermen or boaters and we don’t like to change. Just my opinion and you can’t please everyone.

Viewing 15 replies - 1 through 15 (of 15 total)