Which hose where

[deezee]

So I've a good idea on how to plumb in the header tank for the car. I want a T piece on the hose going between the thermostat and water pump bypass (B) and I would have thought this T piece goes to C. I assume E is the overflow and this goes to the floor? So that means that D and A are connected together then?

If anyone can help out as I don't want to route all the hoses neatly only to find its all wrong!

[Big Vern]

If that's an RS2000 DOHC engine then point (B) is the heater feed. (heater return is the stub pipe above the water pump housing in the block.)
You may need to put in a restricter at outlet (B) and connect the hose from the stub above the water pump to (B) and (C).
Connect (A) to (D) as position (A) is the degas point. Be very careful with this connetion on the thermostat housing as they get pretty brittle and there are no Ford spares left well there wern't in 2003 when I needed one
Connect the small hose connection at or near top of Radiator to (E).
There is no overflow with this type of header tank as it's a sealed system.

BV.

[deezee]

Don't quite follow what you mean by a restrictor at B? That hose at B currently runs straight down to the stub above the water pump. I was thinking of putting a T piece on that hose and plumbing it into C on the header.

How come E has to be connected at the radiator? Couldn't I just connect it anywhere to the top hose?

Edit: my radiator doesn't have a bleed connector on it.

[Coozer]

Aye, exactly which engine is it?

For reference I run a zetec, exactly the same header tank, so, C goes to the bottom hose (seperate from the bypass hose) E goes to the top of the thermostat (bleed) and D goes to the top of the rad (bleed).

Hope that helps.

LG,
Steve

[deezee]

Originally Posted by Coozer

Aye, exactly which engine is it?

As Big Vern guessed its the Frankenstein RS2000 DOHC 16V. Do I really need a 2nd bleed off the radiator? Can I just use the one off the thermostat? I just want to try and simplify the system so I don't have loads of hoses zig zagging around the engine.

[Coozer]

My tank is under the nose cone in front of the engine. When I lift the bonnet off the cap is right there

That way the connection to bottom hose is short and the two breathers just run forwards to the rad and back to the thermostat housing. Simples.

Steve

[Big Vern]

Originally Posted by deezee

As Big Vern guessed its the Frankenstein RS2000 DOHC 16V. Do I really need a 2nd bleed off the radiator? Can I just use the one off the thermostat? I just want to try and simplify the system so I don't have loads of hoses zig zagging around the engine.

What I have written above is based on how the cooling circuit is in the Escort. The DOHC engine is sensitive to cooling around the cylinder head if the cooling flow is changed the you'll end up with a cracked head
The restrictor is to simulate the flow restriction normally caused by the heater matrix which would be in circuit between point B and the stub by the water pump.

You need to vent the top of the radiator and the 'degas' pipe on the thermostat housing to a header tank which needs to be the highest point of the cooling system to prevent air locks in the system.


HTH BV.