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Join Date: Feb 2007
Location: Monmouth Junction, NJ
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Typically my 85 hovers around the first dash line, which means if I'm in stop-n-go traffic, it moves a little bit above the first dash, however, yesterday, with the temps in the low 90's in central NJ, it moved up, a little more than half-way between the first dash and the second dash. I started to get concerned as I'd never seen it that high before. Based upon what I'm reading in this thread, that's not too bad. Should I be concerned?
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Old 08-01-2007, 04:21 PM
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Here's the inside of the gauge off my 87. The small line at 12 o'clock is 212*

Old 08-01-2007, 06:13 PM
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Thanks, that's about where I was yesterday, while idling in the hot 90 deg. weather.
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Old 08-01-2007, 06:24 PM
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On a 90 degree day, in traffic, mine maxes out at 210.
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Old 08-04-2007, 11:56 AM
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Quote:
Originally Posted by A930Rocket View Post
Here's the inside of the gauge off my 87. The small line at 12 o'clock is 212*[/img]
I would think that mark would be approx 220, as the white mark below it is 194 and the white mark above is 248. I guess gauge is not linear???

If you are correct, and it is actually 212, it sure makes my day!!!!

Tim.
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Old 08-04-2007, 03:05 PM
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The other lines and numbers are in Celcius.

Quote:
Originally Posted by timc View Post
I would think that mark would be approx 220, as the white mark below it is 194 and the white mark above is 248. I guess gauge is not linear???

If you are correct, and it is actually 212, it sure makes my day!!!!

Tim.
Old 08-04-2007, 05:37 PM
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Quote:
Originally Posted by A930Rocket View Post
The other lines and numbers are in Celcius.
Yes, I see the Celsius marks/numbers on my gauge, but the second white mark converts to 194F (90C = 194F) and the third converts to 248F (120C = 248F). And accordimg to your post, the white "hash" is 212F. The white "hash" is what I am curious about, as it is a little over halfway between the 2nd and 3rd white marks, which, if the scale is linear, would put it over 220F.

Where did you get the info on the "hash" mark?
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Old 08-04-2007, 08:38 PM
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What a relief! Got the new #ed gauge in & installed. Took it out for a 20 mile one way to mother in laws this evening. After it warmed up ran about 210ish. On the way home, it was a little cooler out side, ran about 200 all the way home, then heated up to about 210 on the slow road. Was worried for a minute!
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Old 08-08-2007, 11:17 PM
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Mine rarely gets above the 90 deg C mark.
Living in tropical Queensland I really try and avoid mid-day temps and heavy traffic in summer.
I found the bumper scoup I got from Pelican does keep the temp down a wee bit when on the move. That little bit of ram air going to the cooler can only help.
Old 08-09-2007, 04:01 AM
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I tried to simulate track conditions driving home the other day in my turbo SC. I had 93F ambient, 116F entering my airbox, and the oil temp (according to the gauge) was at approximately 130C/266F. I was driving in third gear at between 5000-6000 RPM for about 18 miles.

I think that's a bit too toasty. Looks like I'll have to figure a way to get a third oil cooler, or get my front tube syle Carrera cooler to work better.
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Old 08-10-2007, 05:09 PM
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266F is HOT. The tube type coolers are good heat sinks, but you need to get air to it. I'd think about swapping it for a radiator type oil cooler with air going to it (and a fan).
Old 08-10-2007, 05:26 PM
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Yeah. I had a smaller Mocal, no fan, figured I'd give the tube type a try. I'm going to switch it back, and do maybe a bumper mod. I have an air scoop where the running light was. I'll report the findings.

BTW, normal driving is about at the halfway (105C) mark.
Pat
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Old 08-10-2007, 06:04 PM
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I have a sign in my office..."If you can measure it, you can manage it".

I have a three probe digital temperature meter set up today as a test. I have one probe on the supply line to the fron oil cooler, one on the return from the front oil cooler, and one on the line from the auxiliary thermostat to the oil tank. I was getting some funny temp readings yesterday with my infrared gun, and I want to verify proper auxiliary thermostat operation, and maybe try to infer some flow rates (difficult).

So, today, we'll take a little trip to Grandma's house, and my lovely assistant juliekeefe will record these readings for posterity.

I also cut a slot in the front bumper yesterday for (hopefully) improved airflow to the brass cooler. We shall see.

Pat

I put the results here:
http://forums.pelicanparts.com/porsche-911-technical-forum/361666-front-oil-cooler-high-oil-temps.html#post3423094
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Last edited by patkeefe; 08-12-2007 at 01:35 PM.. Reason: added link
Old 08-12-2007, 05:49 AM
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The more air the better........
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Old 08-13-2007, 06:50 AM
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One thing that I have noticed is that no one is mentioned how hot their rear bumper gets with some of these higher temperatures (212! Yikes!).

I hit the mid-way mark after maybe an hour of spirited driving in 80 deg weather, but never creeps beyond that - bumper is roasting. Even a half-hour drive that only brings the needle just above the lower white line (90 deg mark on guage) makes the bumper quite hot. I have the heat shield installed, but not the rear valance (running a M&K Zork that doesn't clear the rear valance).

Am I the only one with this issue?
Suggestions are more than welcome!

Rob
79 930
Old 08-13-2007, 07:57 AM
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Rob:
In hot weather, my bumper got so hot you could barely touch it, and that was pre-turbo.
Mark-nice valance! Looks great.
Pat
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Old 08-13-2007, 08:03 AM
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