Port Engine runs hot on plane
Posted: May 14th, 2017, 7:45 am
Hello all,
I'm having an issue with my port engine. I'm running out of options tracking down the root cause of the high temp.
While at idle and up to about 2000ish rpm's the engine will run and stay cool. but start opening up the throttles headed up to cruising speed, as the rpm's increase so does the temp. It gets to about 190, at that point I pull back the gas back to the 2k range and the gauge comes back down to normal levels.
So here is what I have done thus far to correct the issue and I'm running out of idea's
FWC CR270's
Replaced ALL engine hoses with shields 250 series. When I say all, I mean every single hose has been replaced, including the 3" and 4" exhaust and the 3x3x4 tee.
Replaced the risers and elbow up to the manifold, (did not replace manifolds)
Inspected and replaced the raw water impeller. The housing and cam plate look good.
Inspected and replaced the thermostat and housing. Housing looked good, had restriction plate installed
Inspected the oil cooler, all tubes are clear.
Remove the heat exchange and had it cooked, cleaned and pressure tested (all good)
Here are the things we have not looked at or replaced
the engine water pump
the manifolds
How likely is the engine circ pump to go bad? Also manifolds? they only see antifreeze, so they should be good? any suggestions on what to look at next would be greatly appreciated.
I also just completed a port transmission swap, I blew forward gear during a WOT sea trail. Maybe the trans going out was sending to hot of fluid to the trans cooler? causing a loss of cooling to the heat exchanger ? idk, I'm reaching for ideas... but the engine heat issue was there at the end of last season when the trans was running fine.
Thanks,
J
I'm having an issue with my port engine. I'm running out of options tracking down the root cause of the high temp.
While at idle and up to about 2000ish rpm's the engine will run and stay cool. but start opening up the throttles headed up to cruising speed, as the rpm's increase so does the temp. It gets to about 190, at that point I pull back the gas back to the 2k range and the gauge comes back down to normal levels.
So here is what I have done thus far to correct the issue and I'm running out of idea's
FWC CR270's
Replaced ALL engine hoses with shields 250 series. When I say all, I mean every single hose has been replaced, including the 3" and 4" exhaust and the 3x3x4 tee.
Replaced the risers and elbow up to the manifold, (did not replace manifolds)
Inspected and replaced the raw water impeller. The housing and cam plate look good.
Inspected and replaced the thermostat and housing. Housing looked good, had restriction plate installed
Inspected the oil cooler, all tubes are clear.
Remove the heat exchange and had it cooked, cleaned and pressure tested (all good)
Here are the things we have not looked at or replaced
the engine water pump
the manifolds
How likely is the engine circ pump to go bad? Also manifolds? they only see antifreeze, so they should be good? any suggestions on what to look at next would be greatly appreciated.
I also just completed a port transmission swap, I blew forward gear during a WOT sea trail. Maybe the trans going out was sending to hot of fluid to the trans cooler? causing a loss of cooling to the heat exchanger ? idk, I'm reaching for ideas... but the engine heat issue was there at the end of last season when the trans was running fine.
Thanks,
J