Oil Cooler

My 2.7 rebuild is almost complete and I'm thinking about adding an additional oil cooler. Living in Tennessee, we have pretty hot summer temps.
I plan to leave the trombone cooler and just tap into the existing line to install the aux. cooler. Comments anyone??
As far as the new cooler, please tell me the difference in the $500.00-900.00 coolers "designed for the 911" and the $40-150.00 coolers available in performance catalogs such as Jegs. I realize some sizing is required for the Jegs coolers, but for the $ difference you could hire an auto engineer if necessary to size the thing.(and still have money left!!) Anyone out there ever used aftermarket coolers as I've described? Looking for help!

Thanks,
Scott

Well, when I decided to retrofit a front cooler to my '73, I first tried to get a dealership parts man to put together a parts list of prices and part numbers, but the only response I got was 'You don't want to know!' Not having Panorama to search ads for, and before 'Excellence' had even started, I decided to do it myself with American-made aircraft/racing quality parts. No corners were cut: MOCAL AN-16 thermostat, backordered for about four months because of Indy/CART orders! Russel AN-16 hose and fittings, and a custom-ordered AN-16 furnace-brazed cooler from Earl's Supply. The adaptation of a Earl's cooler into your factory-plumbed front cooler could not be done in 'parallel' as you describe it, as there is simply not enough room! The cooler I had built essentially duplicates the size and flow capacity of the '72 and earlier factory unit, something I assume you would like to do. I have read that the reason for going to the 'trombone' design was that the aluminum lines along the rocker panel contibuted 40% of the cooling capacity! I don't know what your oil temp. is running on the highway, but you may be facing a case of diminishing returns! You do not want to add much restriction to the scavenge circuit, serious problems could result! That is why I chose 100% AN-16 (7/8") components ... they came closest to duplicating the factory installation, which use 22 mm Aluminmum lines. My oil temp. does not run above 210 ... 220, now, whereas 230 used to be a regular sight on hot, west Texas days! My Earl's cooler was only about $150 in the mid-'80s, so I don't really know what it would run today, but adaptation to the metric fittings would be a bit of a pain! I don't know if it would really be worth a small marginal 'gain.'

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Warren Hall
1973 911S Targa

Hi Scott,
I have a 74 with a 2.7 that runs HOT and I am in the middle of adding a remote cooler to my car. I did not have one as original equipment so I'm going into this from scratch. My car is not concourse, it has flares and other mods to make it look like an 80's SC so I'm not a Porsche parts only type ( I don't have enough spare cash to burn for the rediculous prices some of these places want)
I am going to install a Mocal oil cooler with -12 AN fittings. This should make a difference in your temps. You can get it from Pelican at a good price and they can probably set you up with some hoses to go from the lines to the cooler and just use adaptors on the fittings. I don't think your looking at more than $250 total.