2.5di heater hoses

[Ransettimies]

Hi

Which heater hose is inlet and which outlet for heater core?

[dumper]

From memory I think it’s looking at the engine from the front the left hand pipe goes from the bottom of the heater to the steel pipe in the bottom hose and the heater pipe from the front of the engine that goes round the rocker box goes to the top pipe on the heater matrix.

[Ransettimies]

Is inlet hose that which comes to expansion tank with t joint or that which goes round valve cover and behind engine?

[dumper]

It’s the one on the front of the head and goes round the rocker bot and is 3/4 inch od the one that goes to the expansion tank is smaller diameter and a bleed pipe .

[Ransettimies]

Okay thanks. Im asking because im gonna install auxilary heater in my transit.

[dumper]

My mk3 had one T in the top hoses and one in the bottom hose of the heater matrix lines they had just cut both hoses and put the T in t them.

[Ransettimies]

I wanna make so that same hose goes thru diesel heater and then goes thru heater core and warms cab. I use blower fan to warm cab and melt windows before start

[dumper]

T it into the heater pipes and it will the D5wd I had turned on the cab fan when it came upto temperature you plugged the heater loom into the Ford heater switch and it bypassed the ignition feed to the van .

[Ransettimies]

T is fine but i prepare -20-30c degs so i need it to work most efficient possible. Usually all kind of t joints or three hose water valves reduce heater core power

[dumper]

Fit what ever you have my Ford fitted heater on my mk4 and mk5 ex BT vans both had T fittings had no problems with flow.