1982 928 oil cooling question?

[TheQK1]

Hi

It will be great if someone can help and identify the oil coolers running through the radiator. There are left and right oil pipes running through and I need help on if they are for the gearbox and engine oil? It seems that the left is for engine oil and right for gearbox oil, does this sound right?

Why I'm asking is I am fitting an aluminium radiator and splitting the oil coolers from the coolant radiator each with their own oil cooler. The current radiator is not standard and the car is over heating at city driving speeds, this is the reason for the upgrades.

I only bought her a few weeks ago and the cooling is #1 on the list of things to look after. There is still the correct tyres that I need to fit, some small oil leaks on sump and gearbox, some minor cosmetics and then I need to replace the brake rotors. Porsche here in South Africa did a complete check and found the engine still good with only 2 cylinder at 14% leakage on the leak down test.

I was also wondering why the old radiator had 2x temp. sensors one top and one bottom? Any ideas?

Thanks

[Danglerb]

Need pictures and more details, USA or Euro, model year etc.

[TheQK1]

Great, here is some pictures. I have already installed a oil cooler for the pipes on the right hand side.

My 1982 Porsche is a left hand drive euro model.






You will notice the new pipes and the cooler that I've mounted inside the air intake and in front of the aircon fan. These pipes used to run through the radiators right water tank and when I removed them they had red oil in them (transmission oil) so I assume the gearbox or power steering but as the pipes run towards the back I assume it's for the gearbox!
Right hand pipes with transmission oil, already installed cooler.





Left hand pipes with engine oil, thick pipes. I will install the new radiator today and then lift the car to install the cooler for the left hand thicker oil pipes.
Now the two pipes on the left hand side are quite thick and it seems like engine oil so again it's likely to be the engine oil cooler that will now also have it's own cooler and not run through the radiator anymore.

[Danglerb]

My 84 Euro had the trans cooler up front as well, its a GOOD feature, best I think is to route trans fluid through external cooler and right side radiator cooler (helps with warm up I think), but I am not a auto trans guy, so others may have more input.

Which radiator are you using?

Temp ok at highway speed, too hot in slower traffic, usually means bad clutch fan, not bad radiator.