930 Oil Temp Question...

hobieboy · 07-22-2002, 09:59 AM

A question for 930 owners out there - how hot is your car running, both on the track & street ?

On a ~86F day, my oil temp needle would rest between 9:00 & 10:00 (i.e. between the 2 white marks to just under to top one). According to consensus, that puts it between 220-245F; which seems way too hot according to B. Anderson's book.

Have checked all the usual suspects - front oil cooler is working & cleaned, so as the oil tank in the back.

Am I being paranoid?

BTW, a bit more details on the temp - on the track, it almost peg at the 10:00 position (245F) and varies on the street depending on amount of idle time.

thanks,
Patrick.

lukeh · lukeh's Garage

On the street mine has been resting at 9:00 with temperatures around 90 degrees. I have never seen the second white line, even in stop and go traffic. I would also like to lower these temps. (Place Cool collar joke here). I think the front mounted unit is the way to go, but it means a new spoiler. Don't like that idea.

Jocke · Jocke's Garage

When I take my 930 on a normal summer-day the oil-temp always stays at 80 degrees and when I start to racing with it the temp goes up to 100 degrees.

But a normal summer day here in Sweden is about 20-22 degrees in the air so i guess that it´s a little varmer where you drive.

/J

beepbeep · 03:42 PM

Patrick:
My 930 seldom gets warmer than this:

(I'm living in a chilly enviroment tough)

And lo and behold...here's the guy with white-mean-looking-930-that-got-hit-soon-to-be-fixed-and-look-even-better alias "Jocke"

Välkommen Jocke!!

Here's one pic from ol' days:

hobieboy · 07-22-2002, 04:12 PM

ummm... so it sounds like there's something not right in either my thermostat, oil line or cooler then

Have just removed the condensor from the engine bay & installed a cool collar! Will report how it works out in the next few days...

beepbeep · 07-22-2002, 04:17 PM

If you hear oil sloshing in front cooler and it feels hot then front cooler thermostat is probably OK.

Check for:

- pinched oil lines going to front oil cooler
- too lean mixture
- crud and dirt behind your fan, obstructing cooling fins
- dirty engine oil-cooler (pressure wash it underneath)

Good luck!

hobieboy · 07-22-2002, 06:08 PM

Hi beepbeep, thanks for the pointers...

I don't think I ever heard any sloshing sound, but have used an IR temp probe to test the 2 oil lines - 190 & 170 respectively. So it seems that oil is getting there at the right temp.

Mixture-wise, just had the car tuned & dynoed. The air/fuel ratio seems good to me (around 12 at full boost).

Will check the oil lines tomorrow...

A question though - is there anyway to test the effectiveness of the oil cooler? Can it degrade over time?

beepbeep · 07-23-2002, 02:32 AM

Cooler is a stupid thing...just heat exchanger made of metal, and if it "degrades" then it's just beacuse of dirt that got stuck there. So the answer is no.

If A/F ratio is OK then i would start checking other things. As i said, raise the car and use hight pressure water-hose to "blow" trough engine-mounted oil-cooler ... if you are unsure, replace internal thermostat that might be going bad.

Also, what kind of front oil-cooler are you using?? If it's just a couple of loops of brass pipe you might start considering installing a better unit.

Was car running this hot before or did it happend lately?

hobieboy · 07-23-2002, 06:49 AM

I have the "late carrera" cooler as they call it - the radiator type; but just realized that the previous owner had removed the fan in front (from what I was told, its might actually help if you are on the track?).

Have pressured-washed the engine recently completely to fix oil leak as well so maybe its time to replace some thermostats.

Since I got the car a few months ago, its been running at the 9:00 position (~220F) both street & track; but with rising ambiant temp. it gets hotter lately.