Thomas Griffith
Member
to Mitch’s point, mine get now where near operating temp idling. If I throttle them up I might be able to push to 160 but they won’t go much past 120-130 idling with no load
out boats underwater exhaust is pretty far outboard of the centerline and the pickups are just about on the keel but all boats are different.
Could be chasing a ghost but id start to think about restrictions and somehow verify you’re getting proper raw water flow
I wanted to clarify, I was in neutral at 1900+ rpms at the dock when it went up. It doesn't overheat at -1600rpms under load or in neutral.
I just switched out the impeller today. The old one from the previous owner appeared to be larger vanes than the new one from Caterpillar. That being said, it still got to 190 running at 1900+ rpms in neutral. And the water flow on the starboard side is still noticably less than on the port at the same 750ish rpms.
My diver is going to check and see if the ball valve on the seacock is off kilter this coming week. However I opened both strainers and opened the seacocks and appeared to get comparable gushes.
Coolant side flushed
HEX cleaned and free of debris
New impeller from Cat
Fresh coolant, CAT ELC
New 190 degree thermostat from Cat
Checked and tightened Hose Clamps
Any other ideas??