Oil cooling options - which way to go?
10-16-2002, 06:49 PM
#1
Instructor
Thread Starter
Oil cooling options - which way to go?
So here I am having my 3.6 engine ready to go into my 74 Targa. If there weren't these nifty questions about oil cooling. My car has the trombone style cooler at this point. I know I know, keeping it is the only option to fry the 3.6 engine for sure....
I see four options at this point for oil cooling for the 3.6 and I would like to get some opinions here. The car will be tracked mayby once in a while. It will mainly be a street-driven car:
1. Cut the front tub as seen on the <a href="http://forums.pelicanparts.com/showthread.php?s=&threadid=79368&highlight=swiss+engine" target="_blank">orange coupe in Switzerland</a> and put a 70 row cooler in. I could maintain the stock look of the narrow-body Targa by slotting the existing valance panel.
2. Put an aftermarket RS spoiler/bumper on and put a 70 row cooler in the front.
3. Upgrade to the 87 Carrera style radiator cooler.
4. Try to wedge a 993 cooler into the right fender well. I would probably have to modify the headlight bucket and/or the valance panel on the 74 to make room. Well, the horns would have to go, too.
I myself lean towards 1. because it seems the only solution that keeps the stock look, has sufficient cooling (?) and does not comand all the additional mods like rear flares, new wheels, paint, rear bumper, etc, etc. What do you guys think?
Ingo
I see four options at this point for oil cooling for the 3.6 and I would like to get some opinions here. The car will be tracked mayby once in a while. It will mainly be a street-driven car:
1. Cut the front tub as seen on the <a href="http://forums.pelicanparts.com/showthread.php?s=&threadid=79368&highlight=swiss+engine" target="_blank">orange coupe in Switzerland</a> and put a 70 row cooler in. I could maintain the stock look of the narrow-body Targa by slotting the existing valance panel.
2. Put an aftermarket RS spoiler/bumper on and put a 70 row cooler in the front.
3. Upgrade to the 87 Carrera style radiator cooler.
4. Try to wedge a 993 cooler into the right fender well. I would probably have to modify the headlight bucket and/or the valance panel on the 74 to make room. Well, the horns would have to go, too.
I myself lean towards 1. because it seems the only solution that keeps the stock look, has sufficient cooling (?) and does not comand all the additional mods like rear flares, new wheels, paint, rear bumper, etc, etc. What do you guys think?
Ingo
10-16-2002, 08:42 PM
#2
Technical Specialist
Rennlist
Lifetime Member
Rennlist
Lifetime Member
You probably know that the Porsche 3.6L engines don't have an engine-mounted oil cooler like all the preceding engines, so you're right to be concerned about cooling. The one thing to keep in mind, especially on a street driven car, is that a front valance-mounted cooler, what you suggest in your options 1 and 2, requires moving air to work. If you're stuck in traffic you'll have no cooling (unless you hack your trunk to mount a fan). The Carrera 84-89 cooler with the later fan on it would overcome this, the question would be if it has enough cooling capacity. The 964/993 oil cooler is quite a stout object, and you'd need a shoe horn to get it in, but with it's fan it does work well. I think you'd also want to figure out how to route air to it, unless you want the fan to run all the time.
Of course you could also do some combination of fender-mount Carrera fan (or other manufacturer) and a valance-mounted cooler. You could also do what another Rennlister did, and that's install Carrera/radiator coolers in each wheel well, with front vents opening to each.
Of course you could also do some combination of fender-mount Carrera fan (or other manufacturer) and a valance-mounted cooler. You could also do what another Rennlister did, and that's install Carrera/radiator coolers in each wheel well, with front vents opening to each.