John and company,
I have posted a few times about the starboard side of the engine running hotter than the port. I have played around with the hoses and hot water heater hoses to no avail. I finally picked up an IR gun from Sears. Here is what I found.
At hot idle after a run: Starboard 117F and Port 90F
After a run at 3400 RPMs: Starboard 173F and Port 110F
When I took these temps the hot water heater hoses were plugged to removed the hot water heater from the loop. The hot water heater draws from the starboard side of the t-stat housing and returns to the circulator pump. The t-stat housing at idle was around 130F.
The engine temp on the guage is 170F at idle and 175F when running. Oill pressure is good, it will drop after a hard run but return after a few minutes at lower RMP. Oil is also clean, no signs of water.
I'm thinking it could be a head gasket with a very slight leak or a blockage in the head or block or just less flow to that side of the engine. Exhaust manifolds, 6" extentions, risers, circulator pump and sea water impeller are all new.
I have heard that you can run acid through the system to break up any blockages, but, that sounds that an invitation for additional problems.
Any thoughts or should I just leave well enough alone?
Thanks,
I have posted a few times about the starboard side of the engine running hotter than the port. I have played around with the hoses and hot water heater hoses to no avail. I finally picked up an IR gun from Sears. Here is what I found.
At hot idle after a run: Starboard 117F and Port 90F
After a run at 3400 RPMs: Starboard 173F and Port 110F
When I took these temps the hot water heater hoses were plugged to removed the hot water heater from the loop. The hot water heater draws from the starboard side of the t-stat housing and returns to the circulator pump. The t-stat housing at idle was around 130F.
The engine temp on the guage is 170F at idle and 175F when running. Oill pressure is good, it will drop after a hard run but return after a few minutes at lower RMP. Oil is also clean, no signs of water.
I'm thinking it could be a head gasket with a very slight leak or a blockage in the head or block or just less flow to that side of the engine. Exhaust manifolds, 6" extentions, risers, circulator pump and sea water impeller are all new.
I have heard that you can run acid through the system to break up any blockages, but, that sounds that an invitation for additional problems.
Any thoughts or should I just leave well enough alone?
Thanks,