1971 911s Oil Cooler?

Poorsche Man · 10-08-2003, 02:55 PM

I purchased my '71 911 s (2.2) about 6 months ago and I noticed that there was probably a front mounted oil cooler in the right front fender at one time, but not any longer. All the hoses run up to the fender and are not connected. One runs as a breather for the oil tank and the other is disconnected at both ends. So, I have a few questions, did my car originally come w/ a fender mounted oil cooler and what are my best options for putting one back in, OEM, Mocal? I am not neccessarily trying to retain originality, but it would be preferred.

thank you,

zac

pwd72s · 03:07 PM

1969 through 1972 "S" models came with a radiator style oil cooler mounted in the right front fender as standard equipment. The same cooler was an option on T and E models. In 1973 the fender cooler was dropped as standard equipment in all models, and if it was ordered as an option, the trombone cooler was fitted.
It's my understanding that the original "S" radiator is considered NLA. I'm not sure about the lines. A problem with buying used is that if it was used on a car that had an engine blow, bits of metal can still be in the system. So a
thorough cleaning would be needed. Not an original set up, but if you'd like better than original cooling, you might visit this website: http://www.elephantracing.com/index.html

Todd Simpson · 10-08-2003, 03:13 PM

Post some pics!

What are your oil temps with no cooler? I have a 2.2S that's never over 215, even at the track, no front cooler.

I agree with putting it back for originality, just curious about temps.

Poorsche Man · 10-08-2003, 03:20 PM

After the new thermostat I put in last night i took her for a drive. I drove on the freeway at about 90 mph and varying speeds, slow cruising, and stop and go. I wanted to run the car through the paces to see what temps I would get. Granted, it was only 70F degrees out, the hottest the engine got was about 205F. I still would like a front cooler for protection and i am still trying to figure out why someone would have pulled it out in the first place. Do you have the lines running towards the front as i do? It looks like about $700 for the cooler, guard, gaskets and no hoses.

Todd Simpson · 10-08-2003, 04:59 PM

I have an S motor in a T body, so no front cooler has ever been on the car. Previous owner used it the same way, ran well for him too.

Poorsche Man · 10-09-2003, 06:49 AM

So I did a little more research on my oil cooler situation. I will try and post some pics if I can. When I looked under the right front fender I did not see the typical 'U' shaped horn bracket that everyone is mounting their intercooler to. Actually, I didn't even see the horns under the fender at all! There were two threaded holes on the inside part of the fender located about 10" apart that mayt be a good mounting place. I am assuming i will need 3 mounting locations for the intercooler.

I followed the lines from the front fender well back towards the engine and they run up the reard fender well and through the engine compartment wall where they are stubbed out on the inside and threaded. So, looking inside the fender at the two lines, one of them is capped off and the other runs a line to the oil filler neck.??? I thought if these were the intercooler lines they should be running down at the bottom of the engine for inlet and outlet. Can anyone tell what is going on here?

Zeke · 10-09-2003, 07:01 AM

No, the lines originate from where you have observed them. Not out of the bottom of the engine.

Not to split hairs, but an intercooler is a device to cool the intake charge on a turbo charged motor. What you are describing is simply an oil cooler. If you have any specific questions beyond this discussion or need any more pics, I have a '71 S with original cooler intact. You cannot see the cooler very well in these cars as it is covered with a louvred guard to prevent debris from the front tire from slinging off and damaging the cooler. Also, the way they are placed in the fender, not much air flows around/through the cooler. Many have either removed the battery box or opened up the grille next to the turn signal lens, or both, to allow more air to flow. Not having the stock setup may not be such a bad thing.

Poorsche Man · 10-09-2003, 07:16 AM

So maybe a good alternative to the original configuration is to use the Carrara cooler or a Mocal setup. i am interested in still putting in an oil cooler but I want to do it for less than $600 which i think is possible becuase I already have the lines from the front fender to the engine compartment. So where do the two lines coming into the engine compartment run to?

I am getting closer to my purchase.

zac

Poorsche Man · 10-09-2003, 11:36 AM

Is there any fender mounted oil cooler line drawings? I looked in the projects section and only saw pictures. I think i can get part the pieces to gether on the Elephant Racing website. Hummm

Chuck Moreland · 10-09-2003, 11:43 AM

Have a look here:

http://www.elephantracing.com/oilhandling/oilcoolingconfigurationguide.htm

drawings of all 911 oil line configurations.

Tspringer · 10-09-2003, 11:48 AM

Your car originally used an oil filter / thermostat console that attached to the oil tank inside the engine bay. It had lines running inside the engine bay to the hard lines that protrude into the engine bay from the rear fender well.

I have the exact same setup on my '69 911S. It was missing the entire cooler setup. I want a cooler as the car will do frequent track duty. I am going with an Elephant racing from cooler, with mounting kit and all. I will be using the factory hard lines.

The hard part is finding a factory oil filter / thermostat console and the associated hoses. I did locate one, have paid for it but it has not yet shown up. They are out there....

The alternative is to go with a complete kit including all hoses from the engine to the cooler. This would be a good solution, but would run about $1800 by the time its alll finished!

Terry

dfw911 · 10-09-2003, 12:18 PM

Not to to go on a tangent, but my 72T has an oil line that runs from the bottom outside of the oil tank along the inside of the rear wheel well but is crimped/sealed off at the back of the well. The PO told me that car originally (out of the factory) had a rear mounted external cooler that had been removed, but I've never seen or heard of a rear mounted cooler. Is anybody aware of one?

marc weintraub · marc weintraub's Garage

Hi Zac,

Your car is still running hot. My 73"S" with a/c on in 90 degree heat only went to around 200 and that is with the factory loop cooler. The loops were terribly inefficient, while the radiator ones were very functional.

Talk to your mechanic and have him tell you which hose ends you have. Depending on his answer, Mocal could be a great choice for you, otherwise look for an original one since they were actually quite good.

Hope this helps,

Marc

Tspringer · 11-20-2003, 01:21 PM

Zeke,

I got my oil cooler console and thermostat in (used) and now am trying to figure out if its correct and how the heck to install it. Can you post some pics of the engine bay mounted oil cooler console with thermostat and lines running to the hard lines coming into the engine bay from the rear fender well?

Here is a pic of the piece / console I think I have. This is parts diagram of it...... suffice to say the actual assembled piece looks very little like this and i cant figure out how exactly it is supposed to mount.

Terry

Thansk for the help