@wspitler - yes, and hence why I am not discounting that, but I am a data driven person, I do not assume until I know the facts. Without looking at the rpm, I would have no idea and cracking it open and swapping pumps out, being.. let's face it.. not an expert, heh... and if I get the same results, then I just wasted time and money once again, so.. more tests, and waiting for more parts. Not cracking it open unless I replace everything down in the lower end that I can replace when I remove it.
So, that being said, I had a very small window... smaller so since rain was not as big a pain as putting this motor in gear and having enough water left to run thru the pumps. I did not get time to set off an alarm, but I was able to look at the rpm. Out and in gear, same.. between 730 and 801 fluctuating. I will see if I can post the info from YDS, and maybe folks can tell more.. but I was not able to run long due to the prop splashing out the water... then rain came.. otherwise I would have let it run longer. Not sure how to catch more data atm.
I am going to post the results, not sure how it will format. Let me see if I can just upload the xls or csv...
ok, will not let me. I uploaded to google drive. It is in XLS format so anyone caring to check it out, looks fairly normal.. but, I am still not convinced water pump, well, not ruling it out, but.. want to see what else would/could cause both engines to alarm at the same time. Let's assume rpm is fine, if it is... then the water pump could be working. I need to get it on the water where I can leave it running and get the alarm logged.
Before everyone debates and tells me I am wrong... remember this:
They both ran fine for over an hour in my driveway, no overheating at all. The difference was, they overheated in gear...but if the rpm did not drop when in gear then....still could be the water pump, but will not know till I get the alarm and clock it in YDS.
Two questions would remain, if the water pump:
1 - Will it still happen even if I rebuild them again?
2 - What else could cause the water pumps to not be effective when at idle, i.e. if we assume the pump is fine, but.. it is not working well enough... besides being new, what else can cause it to be non-effective?
I did not see bubbles... but to be honest.. very very short testing window there as it kicked water out pretty darn fast....Weill know more when I get it on the water.
I do not have time to drop both lower ends and replace the pumps this week, too busy... so, speculation and testing is all I have atm.
R
YDS Results Link