582 running hot

[ohlhausenr]

You may want to reduce the 50/50 antifreeze mix by adding more distilled water. I fly in high temp weather during summer months (98-100+) and was having the same high water temp. After verifying all other possible areas: temp gage, radiator cap, etc. Changing the antifreeze mix by adding more distilled water which solved my over heating problem. Just don't forget to increase the antifreeze during the winter months when temps fall below freezing.

[jonstark]

Interesting Ray.

[efwd]

yeh, thats a good tip. thx

[LSaupe]

I lowered by radiator by 1 inch with much improvement. The aluminum radiator helps as well.

Doesnt hurt to verify RPM with something like a Tiny Tach. My analog one was off about 300 RPM. I was running 6100 static and 6500 on climb out with a 3 blade 68" Ivo. Getting the pitch right had a big effect on cruise speed.

[Olle1975]

Hi!

I set the mixture to 70% water and 30% antifreeze - I have protect water up to -20 Celsius by this mixture.

582 greyhead with GSC 68"
At hot temperature 6300 rpm during climb with 1000 ft/min.
At cold weather 6000 rpm.

NOTICE: more prop pitch higher altitude, more airtemp - less EGT!!!

IDLE JET: 1/2 turn left less EGT (richer) than 2 turns left !!!

Regards!

Olaf

[oldfox]

You may want to check the water pump impeller sometimes they get to much wear and will not push /pull coolant just something to review ?