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Yes I remember However once I started work on my engine connection everything I realised it did not have the 968 oilfilter housing but the 951 version so I was back on square 1 which led me asking again on this forum.
...so then why does your radiator take hot water at the top and put out cooled water at the bottom....
...or AC condenser for that matter.
AFAIK the "oil cooler from the bottom" is purely for pushing air out of the system.
Yes I see what you mean As I said I have very limited knowledge on the topic and wanted to confirm with people who do know instead of trusting what I have read since I do not like to take chances.
If I only knew how Porsche did it with the 968 Turbo I would be happy since they should know but I have no access to any of these super rare cars nor have I found any pictures of how they routed the lines between the coolers.
Running two coolers in a series will likely work fine. Yes, there will be some pressure loss relative to a parallel arrangement, but T-fittings also result in a pressure loss. Some of the fluid dynamics guys have suggested that every 90 degree turn in fluid results in a 5psi drop in pressure. (Use Y-fittings if you're going to do it.) Further, the series arrangement keeps the oil line routing simple.
A very important consideration often missed is airflow to and from the cooler. Air, like liquid, will seek the path of least restriction which is often AROUND the cooler. To ensure air passes THROUGH, a sealed inlet duct needs to be fashioned. An exit for the air is just as important. Be sure there's an outlet path too. Coolers are often seen with clever inlet ducts, but with the cooler mounted against a bulkhead with no path for air to exit. It's really not rocket science, but many get it wrong.
Running two coolers in a series will likely work fine. Yes, there will be some pressure loss relative to a parallel arrangement, but T-fittings also result in a pressure loss. Some of the fluid dynamics guys have suggested that every 90 degree turn in fluid results in a 5psi drop in pressure. (Use Y-fittings if you're going to do it.) Further, the series arrangement keeps the oil line routing simple.
A very important consideration often missed is airflow to and from the cooler. Air, like liquid, will seek the path of least restriction which is often AROUND the cooler. To ensure air passes THROUGH, a sealed inlet duct needs to be fashioned. An exit for the air is just as important. Be sure there's an outlet path too. Coolers are often seen with clever inlet ducts, but with the cooler mounted against a bulkhead with no path for air to exit. It's really not rocket science, but many get it wrong.
Ok thanks for your input Michael. Will likely connect them in series which I also think was the case on the factory cars. I have asked owners of the "real deal" as suggested here just to confirm.
I will look in to air exit ducts. As you see I have the "fancy" factory air inlet ducts already 😉. I can probably manufacture something in glasfiber as exit ducts.
If there's clear space behind your coolers, Peder, your arrangement will work fine.
Sounds reasuring! Pretty much clear behind them. Can lead the exit air out from the coolers and through the inner wheel liners. Maybe mount some vents to cover the holes a bit to hinder water and grime spraying from the wheels.
01-28-2019, 02:18 PM
However once I started work on my engine connection everything I realised it did not have the 968 oilfilter housing but the 951 version so I was back on square 1 which led me asking again on this forum. 
