high oil temps

[drpep]

Hello my friends

This past week I have noticed with my new JPI 830 that my oil temps were high. I spoke to my installer and he advised me that the factory gauge is hooked up near the oil filter and therefore reads oil temp after it comes from the cooler and therefor it is lower than the actual oil sump temp. The JPI apparently is connected to the oil sump I am getting readings at full power at 2500 ft however the EGT'S AND CHT'S are  well within normal range When I got on the ground the top cowling was hot. Needless to say today was quite hot recording close to 30 degrees C. Being a little anal about this my guess is that the oil cooler may be blocked, or the air circulation under the cowling has been compromised somehow. Alternaively the new JPI probe may be faulty. This probably not the case as the cowling is also hot. Any words of wisdom would be appreciated

Thanks

FLYIN PHIL

[GXPD]

Phil

How hot is high?  My EI logs show that I generally run at 160-170F and have seen peaks to 220F.  Closing cowl flaps right after a long climb on a hot day would make a difference.  better to let the engine settle to cruise after the climb and close flaps as temps stabilize.  At the expense of some drag, you can also adjust cowl flaps to keep you in the green.

 

[drpep]

High is 230 plus.... too high Yes my cowl flaps were open to well after a short climb to 2500 feet. I did some air work steep turns then returned to base. On the ground the temp dropped back to 190 F.

[M016576]

yeah, I think oil atomizes somewhere just north of 245 F, so you want to stay below that (hence the redline).  My first question is: what type of oil are you using?  If you're flying around in a hot place (upwards of 30 C), you should probably be using straight 100W.  Anything less and you're going to see high oil temperatures.  Also, make sure your sump is full and that you've changed the oil on a regular schedule.  I live close to death valley, where the temperatures routinely boarder 110F during the day in the summer... good incentive to use the heavy weight oil and change it regularly (as it gets cold in the winter, forcing a new weight every 7 months!)

                    -Jon

[GXPD]

Phil

Might be worth a check to see if your l lower cowl baffle is seated in the channel on the inside of your lower cowl.  Very important for cooling.