I guarantee you that 8/10 people that run there equipment hard for extended WOT will get oil temps above 230 degrees.

Ill take your word for it. I just have not seen it. Mine hit way higher last weekend, but just crusing is way too high.

Cloud
My bad I read that wrong I guess he did say "Peaking at" But still seams high and my oil temp only reads to 260!
You doing anything tomorrow???
Mendota or what?

I would say 280 is the max temp you should run with good oil. However, above about 240, bearing wear is accelerated. If you have a decent size oil cooler and you are running cold water through the engine, the next thing I would check would be carb jetting. Running lean will make your oil temps rise fast.

Personally, my engine has an oil thermostat at 212. Theoretically, i'd like to be able to stay at 212, but it doesn't happen. On intermittant WOT runs, i'll run between 212-230. On a long wide open run, i've seen as high as 250 oil temps. I think it's due to not enough engine venting, and lack of oil cooler effeciency. I think if someone is getting above 260 on wot runs, you need to back off, and either let the engine breath better, or invest in better oil coolers. I know the cooler is my next purchase................

We can run steady 6000+ RPM and the oil temp never moves off 218 degrees. You just need a large enough oil cooler, a thermostat and adequate oil lines to keep the oil cool. We run a single KE 13 plate bell housing type oil cooler and -12 lines with about 775 HP. At some point, maybe 850+ HP?....you would have to go to twin bell housing oil coolers.

are youall mesuring it in the pan or after the cooler going back into the block?

At the oil filter/thermostat housing before returning oil to the to the block. We also have a 270 degree high oil temp sender in the pan that would trigger dash warning lights and an audio alarm.

some interesting input, I will have to do some looking into it this week. it seems to be rpm related, because it barely makes any temp at idle/slow speeds. maybe I will give Chief a call and see what they say, they are their motors. BTW can you pull the coolers off without making a huge mess, maybe they just need a good cleaning inside like someone above mentioned.

Can anyone make a good suggestion on oil coolers, brand and sizing. Running a 454 with stroked 496 crank, cam, aluminum heads, and intake with 850 Deman carb.. runs a bit hotter than the mercruiser stock engine. Stock cooler now is 2" x 12"