Temps and Tach
#11
Charter Member # 55
Charter Member
My 502mpi's have pretty high water pressure also, but not at 3500rpms. I run about 20psi at 3500 and at WOT, they will push 35psi. Its higher than I like, but in 530+ hrs, has not created any issues
If the water presssure is that high, I doubt you have much debris/impeller pieces stuck. If I get any sizeable debris, it gets stuck at the entrance to the oil cooler and my water pressure drops about 10-15psi.
If the water presssure is that high, I doubt you have much debris/impeller pieces stuck. If I get any sizeable debris, it gets stuck at the entrance to the oil cooler and my water pressure drops about 10-15psi.
Last edited by Griff; 01-25-2014 at 02:04 AM.
#12
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Join Date: Feb 2011
Location: Brookfield Wi
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My 502mpi's have pretty high water pressure also, but not at 3500rpms. I run about 20psi at 3500 and at WOT, they will push 35psi. Its higher than I like, but in 530+ hrs, has not created any issues
If the water presssure is that high, I doubt you have much debris/impeller pieces stuck. If I get any sizeable debris, it gets stuck at the entrance to the oil cooler and my water pressure drops about 10-15psi.
If the water presssure is that high, I doubt you have much debris/impeller pieces stuck. If I get any sizeable debris, it gets stuck at the entrance to the oil cooler and my water pressure drops about 10-15psi.
As a FYI only, I never see over 12 psi. on mine.
#13
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Looks like all the starboard gauges are a smidge higher than the port. Water temp, oil temp, and oil psi. Could be a weak ground behind the dash.
In regards to the temp though, looks like they are running in the 180 range water wise. I believe they should be 140-150 with the merc thermostat?
In regards to the temp though, looks like they are running in the 180 range water wise. I believe they should be 140-150 with the merc thermostat?
#14
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I had a similar problem on a little different setup. (crossover w/ bypass) Port engine ran 170*F and starboard ran 160*F. To solve my problem I had to restrict my bypass a little to allow more water to flow through the engine. This increased block pressure a little but cooled the block. So what I'm trying to say is don't just concentrate on water delivery, but also water exiting. Thus a little bit higher water pressure on that engine. Flow is the inverse to pressure and flow is more important than pressure unless you have to much pressure.
Also, check your grounds.
Also, check your grounds.
#16
Charter Member # 55
Charter Member
Looks like all the starboard gauges are a smidge higher than the port. Water temp, oil temp, and oil psi. Could be a weak ground behind the dash.
In regards to the temp though, looks like they are running in the 180 range water wise. I believe they should be 140-150 with the merc thermostat?
In regards to the temp though, looks like they are running in the 180 range water wise. I believe they should be 140-150 with the merc thermostat?