Looking for suggestions for engine cooling
07-06-2019, 09:26 AM
#31
Nordschleife Master
Fitting an external factory or aftermarket oil cooler is a popular upgrade for an na especially if it’s used on a track. It involves swapping the cooler housing on the side of the engine to one with a facility for external oil lines such as one from a 951, S2 or 968 and running stock (or custom) lines to the external cooler which could also be from a turbo, S2 or 968. If you get the brackets and fixtures with the factory cooler it makes mounting easier on an na but it’s not that hard to make up custom mounts. Btw the later models had a much better fixture for attaching the oil lines than the earlier cars so it’s worth seeking those out.
Everyone likely knows this so I’m just restating the basics here for clarity however, I do want to clear up one misconception. Removing the internal oil cooler and fitting an external 951, S2, 968 or aftermarket oil cooler doesn’t prevent in any way the causes that could lead to oil and coolant mixing (ie: milkshake). Milkshake is commonly caused because the seals in the oil cooler housing have failed and those seals remain even with an external oil cooler, so the risk doesn’t diminish.
Everyone likely knows this so I’m just restating the basics here for clarity however, I do want to clear up one misconception. Removing the internal oil cooler and fitting an external 951, S2, 968 or aftermarket oil cooler doesn’t prevent in any way the causes that could lead to oil and coolant mixing (ie: milkshake). Milkshake is commonly caused because the seals in the oil cooler housing have failed and those seals remain even with an external oil cooler, so the risk doesn’t diminish.
07-06-2019, 09:36 AM
#32
Rennlist Member
Everyone likely knows this so I’m just restating the basics here for clarity however, I do want to clear up one misconception. Removing the internal oil cooler and fitting an external 951, S2, 968 or aftermarket oil cooler doesn’t prevent in any way the causes that could lead to oil and coolant mixing (ie: milkshake). Milkshake is commonly caused because the seals in the oil cooler housing have failed and those seals remain even with an external oil cooler, so the risk doesn’t diminish.
07-06-2019, 10:59 AM
#33
Nordschleife Master
Please explain. Are you suggesting that the oil cooler seals in a 951/S2/968 housing don’t fail or won’t cause the oil and coolant to mix like an na housing if they do fail?
...or maybe I’ve misunderstood your comment, which is entirely possible lol.
...or maybe I’ve misunderstood your comment, which is entirely possible lol.
07-06-2019, 12:07 PM
#34
Rennlist Member
I'm saying it is true that the stock oil filter housing, on a car with an auxiliary oil cooler, eliminates the oil/water cooler on the side of the block...which was your question.
It's best not to change the premise of a question when responding to a response...that can be confusing.
07-06-2019, 12:20 PM
#35
Nordschleife Master
No, not suggesting oil and water can't / won't mix.
I'm saying it is true that the stock oil filter housing, on a car with an auxiliary oil cooler, eliminates the oil/water cooler on the side of the block...which was your question.
It's best not to change the premise of a question when responding to a response...that can be confusing.
I'm saying it is true that the stock oil filter housing, on a car with an auxiliary oil cooler, eliminates the oil/water cooler on the side of the block...which was your question.
It's best not to change the premise of a question when responding to a response...that can be confusing.
07-07-2019, 11:12 AM
#36
Race Car
Thread Starter
Okay, this is the Boxter/996 middle rad I ordered. It'll be here in about 2 weeks. I will plumb it in series so the coolant has to go through it and the main rad rather than path of least resistance.
07-07-2019, 01:58 PM
#37
Rainman
Rennlist Member
Rennlist Member
on the 996/986 they were plumbed parallel.
series doesn't work very well for radiators because their efficiency depends on temperature difference between water and air.
itll still work, but not as well as parallel.
series doesn't work very well for radiators because their efficiency depends on temperature difference between water and air.
itll still work, but not as well as parallel.
07-07-2019, 06:59 PM
#38
Race Car
Thread Starter
Interesting Spencer. Porsche doesn't use electric fans on these do they? Or can anyone suggest mini fans in case I need to mount in a less than Ideal spot?