Thread: EGR Removal and heat exchanger

I've just found two rubber bungs in the kit.. are they for blocking the hoses of the cooling system? Can they just be blocked or do they have to flow?

The rubber bungs are for blanking the two small lines that come off the actual EGR.
Re the blanking plates, I left the heat exchanger in place and just used the one supplied blanking plate at point 2 in your drawing.

Roger

Originally Posted by Xtreme

The rubber bungs are for blanking the two small lines that come off the actual EGR.
Re the blanking plates, I left the heat exchanger in place and just used the one supplied blanking plate at point 2 in your drawing.

Roger

Thanks! You just left the heat exchanger open at both ends? I could do that for the moment.

Long term I think I'd still like to remove it as one less thing in the cooling system to leak. If it doesn't need to flow blocking them would be my preference.

Originally Posted by Captain_Rightfoot

Thanks! You just left the heat exchanger open at both ends? I could do that for the moment.

Long term I think I'd still like to remove it as one less thing in the cooling system to leak. If it doesn't need to flow blocking them would be my preference.

No, heat exchanger wasn't left open at both ends.
Ref your drawing - Pipe 3 was left connected to heat exchanger, pipe 1 was removed with EGR and the blanking plate was fitted to the heat exchanger at point 2.

The reason I didn't remove the heat exchanger was that I didn't have an allen key suitable to access the screws where pipe 3 attached to the exhaust manifold.

Roger

I took the heat exchanger completely off and all the associated plumbing.

If memory serves me correctly the coolant to the EGR heat exchanger is sourced from the oil cooler jacket on the on the side, rear of the motor under the exhaust manifold. So you can't just block it off as you'll stop the coolant flow from the water jacket on the heat exchanger for the engine oil.

If you are lucky you will have an unused and taped nipple on the lower radiator (bottom) where on modes that did not have the EGR heat exchanger the coolant went directly too from the oil cooler.

So take the coolant from the end of the metal line directly to the lower radiator nipple which you will need to tap.

I’m going on memory as I don’t have access to the manuals at the moment which is where you can see the type 1 system to the type 2 system.

My vehicle was a 2001 110 TD5

Originally Posted by scott oz

I took the heat exchanger completely off and all the associated plumbing.

If memory serves me correctly the coolant to the EGR heat exchanger is sourced from the oil cooler jacket on the on the side, rear of the motor under the exhaust manifold. So you can't just block it off as you'll stop the coolant flow from the water jacket on the heat exchanger for the engine oil.

If you are lucky you will have an unused and taped nipple on the lower radiator (bottom) where on modes that did not have the EGR heat exchanger the coolant went directly too from the oil cooler.

So take the coolant from the end of the metal line directly to the lower radiator nipple which you will need to tap.

I’m going on memory as I don’t have access to the manuals at the moment which is where you can see the type 1 system to the type 2 system.

My vehicle was a 2001 110 TD5

Thanks I'll have a look a bit later or in the morning. It surprised me your vehicle had the heat exchanger because I thought it was only later ones but there you go.

I just left mine open at both ends, as I could not see the harm in doing so. It only had the exhaust gasses flowing through it. It is still in place and coolant flows through it. It is just not connected to anything, thats all.

Also I ran out of time to take it out and did not have time to experiment with tubes, pipes etc etc.

So, unless you're going to do a coolant replacement it's probably easier just to leave it there until you're doing that job.

I understand it heats water but what does it use this water for?