Swirl Pots

[66yostagea]

As you may know I have the "Gurgles" in the RS4. Probably due to the way the Skylines members instructions said to install the FFP.

Came across info on a "Swirl Pot and Header Tank" Has anyone used one, or knows anything about it?

Edited August 13, 2014 by 66yostagea

[Daleo]

As you may know I have the "Gurgles" in the RS4. Probably due to the way the Skylines members instructions said to install the FFP.

Came across info on a "Swirl Pot and Header Tank" Has anyone used one, or knows anything about it?

Obviously, the swirl pot must be mounted above the head height of the rest of the cooling system to work properly, but the theory is; the coolant draws through the system using convection.

The leg connected to the bottom rad hose draws coolant in and down as it is colder, and this allows a constant inflow from the hot side of the cooling system.

Any bubbles throughout the system will obviously migrate to the highest point over time, and this can then be purged completely and will the draw coolant with no air from the overflow tank; thus eliminating any air pockets within the system.

Convection is a surprisingly effective way to move hot liquids; early cooling systems that didn't have a water pump used convection to provide fluid flow through the system.

As time went by more effective means of cooling were required as more power (thermal energy) was generated and space constraints for radiators and water volume were reduced.

You see many high powered engines (especially RB's) using swirl pots as they generate enough localised heat to flash boil pockets of water within the head; this then causes cavitation if it isn't released.

An inline swirl chamber is far more effective as it separates the bubbles directly out of the coolant flow from the engine, as opposed to just the bleed points. Obviously this system would still require the use of a header or swirl tank above the level of the head height of the cooling system.

Hope this clears things up.

[66yostagea]

Hmmm? I will muse on this

[Ben C34]

Seems like alot of stuffing around for what is essentially an unrequired mod (ffp)

Losing torque, and impacting negatively on the cooling system just to get some tidier pipework.

[scotty nm35]

Can you run a bleed line to a ball valve from the pipes causing the gurgle? It is just air trapped in the system somewhere.

[66yostagea]

I am getting to the point where, after I finish the Dayz rebuild, I will take off the FFP and put the piping back to stock. It is pointless having an RS4 that has to tippy toe around.

[KiwiRS4T]

I am getting to the point where, after I finish the Dayz rebuild, I will take off the FFP and put the piping back to stock. It is pointless having an RS4 that has to tippy toe around.

I realise its hard to photograph the underside of the ffp but if you can put up some pics I will compare it to mine (do you have a Greddy copy?) as I am not having any such problems.

[sriver killer]

66yo stagea,

offtopic do you have any stagea spares lying around?

I remember talking with you a while back but I can't seem to pm you (maybe inbox is full)

[66yostagea]

Seems like alot of stuffing around for what is essentially an unrequired mod (ffp)

Losing torque, and impacting negatively on the cooling system just to get some tidier pipework.

I said it before, it was a Christmas present from my son. It came with an Xforce cat

[Daleo]

He sounds like a good lad.

[66yostagea]

He sounds like a good lad.

I forgot, he gave me an FMIC also. But then I did give him a Nissan Patrol. We are a giving family.

[Stealth400]

Obviously, the swirl pot must be mounted above the head height of the rest of the cooling system to work properly, but the theory is; the coolant draws through the system using convection.

The leg connected to the bottom rad hose draws coolant in and down as it is colder, and this allows a constant inflow from the hot side of the cooling system.

Any bubbles throughout the system will obviously migrate to the highest point over time, and this can then be purged completely and will the draw coolant with no air from the overflow tank; thus eliminating any air pockets within the system.

Convection is a surprisingly effective way to move hot liquids; early cooling systems that didn't have a water pump used convection to provide fluid flow through the system.

As time went by more effective means of cooling were required as more power (thermal energy) was generated and space constraints for radiators and water volume were reduced.

You see many high powered engines (especially RB's) using swirl pots as they generate enough localised heat to flash boil pockets of water within the head; this then causes cavitation if it isn't released.

An inline swirl chamber is far more effective as it separates the bubbles directly out of the coolant flow from the engine, as opposed to just the bleed points. Obviously this system would still require the use of a header or swirl tank above the level of the head height of the cooling system.

Hope this clears things up.

[Stealth400]

Any pictures of the fitted swirl pots location & plumbing ?