First question, does anyone know the direction of flow for the engine coolant shown in these two pictures?


Front of engine block:




Side of engine block:




I ask this because I'm planning on reinstalling the stock oil heat exchanger which brings me to my next two questions. Does direction of flow matter in the stock oil heat exchanger? Also should I route it before the turbo or after the turbo?


Much appreciated

 

i don't know the flow of the coolant, but would be very curious to see the influence of the stock coolant oil cooler in lowering temps! i currently have this setup but dont have a oil temp sensor or the before/after effect of the coolant running through the oil filter to see if it helps!

I would personally run it before it goes to the turbo, as i see the oil temperature being more important than the temp that goes to the turbo. Considering the price of a new motor compared to a new turbo!

 

Yeah I have both a water and oil temperature gauge so I'll be able to see any differences immediately.

After talking to pat, stock oil heat exchanger, lower temps for the fan turning on, and MAYBE a larger radiator should solve the oil heat problems.

With pats setup, he has aftermarket rad, lower fan temps, stock oil heat exchanger, and a small aftermarket oil cooler, his oil temps ONLY get to 170F at full load , actually TOO low lol

 

you need to use a thermostat on the oil cooler to bypass the oil cooler when its cold out, so as to allow your oil to reach its operating temperature!

 

yup, have to rig something up.



Bump for info on coolant flow...

 

First Pic is return.. Second pic is feed.

 

Great thanks jeff

 

So you are saying it is feeding from the block and then going against gravity with not pump up to the head area, I think you have that backwards

 

NP Jon


https://www.s2ki.com/forums/index.ph...f=133&t=232925

Had this one bookmarked, plenty of good info about cooling... fperra and davepk confirm the flow.