Hot Oil temps---why????
08-12-2002, 02:58 PM
#1
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Hot Oil temps---why????
Okay...my latest dilema is the port engine seems to be getting the oil pretty hot. I am running crossovers without thermostats and the water temps never really read...so they I would guess them to be about 120 degrees.
I recently replaced both oil coolers with 12 X 2 models and the stbd engine also has the powersteering cooler. The stbd engine just barely hits 200 degrees when running 4000rpms, while the port goes to 230 after about 7 minutes of running. I switched the guages just to be sure it wasn't the guage. The block was boiled out as well...
Why would the stbd engine be running so cool and the port engine be gettin so hot???
I recently replaced both oil coolers with 12 X 2 models and the stbd engine also has the powersteering cooler. The stbd engine just barely hits 200 degrees when running 4000rpms, while the port goes to 230 after about 7 minutes of running. I switched the guages just to be sure it wasn't the guage. The block was boiled out as well...
Why would the stbd engine be running so cool and the port engine be gettin so hot???
08-12-2002, 06:11 PM
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Not that, but swap the sensors between engines. Just want to make sure that you have two matched temp senders. If you see the temps reverse, you know where the problem is.
08-12-2002, 06:33 PM
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I'd be more concerned with the 200* temp engine than the 230* engine. Both of mine run at 230* all day long at 3500. Go to 240 with a WOT blast, then quickly back to 230. 3000rpm gets me about 220. I always believe the best temp to be between 220 and 230 at cruise speed. Just enough temp to keep the oil "water free".
BT
BT
08-13-2002, 06:52 AM
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SEAN, try switching either senders or even the wires for the senders on the engines. then see if port engine is still the hot one. seems mine has always been the starboard engine that runs 20 degrees more, never figured out why, just lived with it.
dave
dave
08-13-2002, 08:24 AM
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I'll try switching the senders.
Do you guys agree that 230 is okay?
I always thought it seemed too hot, but blue thunder makes an intersting point...it needs to be hot enough to boil off any condensation that may form...
Do you guys agree that 230 is okay?
I always thought it seemed too hot, but blue thunder makes an intersting point...it needs to be hot enough to boil off any condensation that may form...
08-13-2002, 12:37 PM
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I would agree with biggus if the 270 is after a wot blast and the 220 is seen at an easy cruise speed. 270 at cruise speed will be 320 at WOT. Oil can't take that.
I would think about trying a little heavier oil in the engine running 200 to see if that bring the temp up a little.
BT
I would think about trying a little heavier oil in the engine running 200 to see if that bring the temp up a little.
BT
