I am looking to add an oil cooler to my 1.6D in prep for a VNT experiment. As the title asks has anyone ever heard about or seen or attempted or succeeded in stacking up and plumbing in series two or more factory oil coolers? I have used the search to no avail. My budget won't allow for a remote cooler and I've got a couple of these lying around. My train of thought is that if the filter seals on to the bare flange and the cooler seals on to he flange, then surely one cooler would seal on to another. All that is needed (in my limited reckoning) is a threaded nipple twice the length of the one used when running a factory oil cooler and some rad hose.
Please, somebody shoot my theory full of holes. Otherwise I'm gonna try this and end up making a huge mess.
As a related question: What are the weaknesses of the factory cooler? I have always believed that a liquid to liquid heat exchanger was more efficient than the fin tube liquid to air variety. Now obviously placement of the fin tube type drastically effects performance, you can't beat being in front of the rad in the air stream. But are there other poor aspects to the factory design?
And another idea I've just had...has anyone ever set up system to mist the rad/ oil cooler/ intercooler with water? Turning them into evaporative coolers, like the condenser in an industrial refrigeration plant. Those things dump a massive amount of heat.
Okay I'll stop daydreaming.......back to your regularly scheduled program.
If you already have the stock cooler you probably don't need to do any upgrades to the oil cooling system unless you are planning on running silly amounts of boost. Even without the cooler you should be alright at stock levels, a large (stock 1.6) turbo and moderate driving.