mrsrobinson
Well-Known Member
Afterwere those sea trial temps prior to the short haul, or after?
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Afterwere those sea trial temps prior to the short haul, or after?
I am flushing the starboard engine aftercooler today, took a shortcut since I knew I was going to replace one of the hoses anyway. The initial water coming out was dark brown
Four and a half hour flush of the starboard aftercooler in both directions, warm up for 15 minutes at the dock, weather not favorable for a sea trial. I still think the starboard engine is running too warm
https://photos.app.goo.gl/ExMV6TWx9PuXRDbs9
Yup, when I did my research 5 to 6 gallons per minute seemed to be the norm. The one I used was 800 gallons per hour. I don't think it's so much the pressure of the water flow as it is the soaking and movement. I could be wrong though.I'm pretty sure that the pump you bought does the job. For my flushing, I looked at a bunch of pumps and settled on the Drummond 1/4 hp 3000 gph from Harbor Freight, $70. Thought process was to keep it in the engine room for an emergency after that. Have a bunch of rollup 2 inch discharge hose and a section of rigid PVC for pickup. Hopefully it will never see action!
I put the gun on the hoses coming into the boat, temps were 82. See one minute 30 seconds into the video. Port engine at the thermostat and expansion tank is 25 to 30° cooler then the same spots on the starboard engine. The port engine is the engine running cooler at load now as well.
I found it interesting the water on the port fuel cooler hose was about six or seven degrees warmer than the strainer hose. Maybe that's the difference between shooting the temp on rubber versus metal?
If I follow your train of thought you are saying if the raw water coming into the boat is mid-80s then the raw water exiting the boat should be in the mid to upper 90s showing heat exchangers/coolers are doing their job correctly?
Yup, when I did my research 5 to 6 gallons per minute seemed to be the norm. The one I used was 800 gallons per hour. I don't think it's so much the pressure of the water flow as it is the soaking and movement. I could be wrong though.
All of the broken off zincs were gone, which is something I wanted. I replaced all five on each after cooler after the flush. I had to soak two of the bolt heads to remove the remaining zinc inside of them.
Look what I found today starboard engine which is the one still running hot
https://photos.app.goo.gl/Am76uVoXdqL5WjeY7
View attachment 132895
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If we establish a pool and take bets on this, I'd be putting my chips on the HEX and the aftercooler
RWS
A CSR member get together at your place.==================================================
What did I win ?
RWS
Did anyone mention to you about CAT changing the temperature regulators from 180° to 200° for the EPA (thanks Obama)? Could you have one of each?Look what I found today starboard engine which is the one still running hot
https://photos.app.goo.gl/Am76uVoXdqL5WjeY7
View attachment 132895
Ding Ding Ding!!! We got a winner!Look what I found today starboard engine which is the one still running hot
https://photos.app.goo.gl/Am76uVoXdqL5WjeY7
View attachment 132895
Cleaned her up, barnacle buster flushed it for 4 hours, took her for a sea trial ran at 180. What's confusing to me is where did those come from, the raw water impeller I pulled did not have any broken fins.
That's why I didn't pull the cap off on that side, because the raw water impeller looked pretty good. Now I wish I would had done it, I had to remove the exhaust and everything today to get to it. Replace some raw water hoses while I was at it.
Ford engine still running just under 200. Boat lost some speed, because it's been sitting for three and a half months, I got some growth on the bottom.
I had the same thing - no lost blades when I changed mine the first time, but more for curiosity, I took the end caps off and they were jammed with impeller blades from previous changes. FW told me that CAT overengineers their cooling systems, and I never had any temp indications of clogged HEs though...Cleaned her up, barnacle buster flushed it for 4 hours, took her for a sea trial ran at 180. What's confusing to me is where did those come from, the raw water impeller I pulled did not have any broken fins.