TD5 engine swap questions

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_tc

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Hello, my T reg disco engine went bang so i have sourced another engine, this is from an X reg disco. I am going to have the ecu reprogrammed with the new injector codes and all the faults cleared.
Now, i have read about 10p engines and 15p engines. does anyone know if i should be concerned with this? Will the new engine just plonk in and all i need to do is tell the ecu that it has different injectors?
Many thanks
Ed.
 
_tc said:
Hello, my T reg disco engine went bang so i have sourced another engine, this is from an X reg disco. I am going to have the ecu reprogrammed with the new injector codes and all the faults cleared.
Now, i have read about 10p engines and 15p engines. does anyone know if i should be concerned with this? Will the new engine just plonk in and all i need to do is tell the ecu that it has different injectors?
Many thanks
Ed.
Click to expand...

Injectors are location specific rather than ecu specific if I remember right. That means that the new engine should run fine without programming it.

The coolant system is different on the 15p engines. You may need to either switch to the later rad or adapt the pluming of the new engine to the old set-up.
 
Location specific? wow, i dont get that. does the engine number mention whether its 10p or 15p?
thanks ratty, this helps matters. i had almost lost enthusiasm.
 
_tc said:
Location specific? wow, i dont get that. does the engine number mention whether its 10p or 15p?
thanks ratty, this helps matters. i had almost lost enthusiasm.
Click to expand...

The injector needs to be told which cylinder it's in so it knows at what time to squirt the fuel. So if you take an injector out of one engine it should go straight in to the same pot of another without needing reprogramming. I kept all the injectors from my old head so that if I get an injector fault I can just switch the corresponding one that I need without having to get it reprogrammed.

Can't help you on the engine numbers I'm afraid.

As far as i'm aware there will be no problem with replacing a 10p engine with a 15p engine. I nearly did this myself a few months back. Shifty is about to do the same now.
 
cool i get it. well i have had a look and the new engine is a 10p so thats cool. i plan on keeping the new injectors with the new engine so guess i will need to re programme the ecu once the engine is in. Im doing this as i think 1 or 2 of the original injectors had failed hence the miss fire in the first place.
Thanks ratty.
 
yeah new injector loom but missfire still present. ecu showed injectors 3 and 4 not working correctly then engine over revved and went bang.
i am going to fit the new engine and program injectors and see how it is. the main loom could be knackered but no point changing it until i have tried the new engine. Ecu may be broken too but still need an engine without a hole in the side.
 
Ok engine now inplace yesterday. all went well other than one wire broken on a plug on the hosing under the turbo that has the oil filter on it. Could be oil pressure?
I need to plug the car in to a computer now to program teh injectors and clear previous faults. Can anyone tell me where i can buy a nanocom from please? I am struggling to find one.
 
_tc said:
Ok engine now inplace yesterday. all went well other than one wire broken on a plug on the hosing under the turbo that has the oil filter on it. Could be oil pressure?
I need to plug the car in to a computer now to program teh injectors and clear previous faults. Can anyone tell me where i can buy a nanocom from please? I am struggling to find one.
Click to expand...

where are you located?
 
You cant use early 10P EU2 injectors in the later 15P/19P EU3 engines as the injector cam has a different profile to generate higher injector pressures.
The injectors are colour coded. You can only use GREEN top injectors in the later engines as the black and blue ones dont have enough travel in the injector piston for the reprofiled cam. They will physically fit but beware the above as you risk bottoming the injector.
I now have a full set of BLACK top injectors if anybody is looking for some. No reasonable offer refused. Excuse the spam. :p
 
Success!!! she is running now. had the injectors coded at the garage and she is all sounding fine. Will run her for a few days then change oil etc but very happy now.
Thanks for al the advice etc.
 
ratty said:
The injector needs to be told which cylinder it's in so it knows at what time to squirt the fuel. So if you take an injector out of one engine it should go straight in to the same pot of another without needing reprogramming. I kept all the injectors from my old head so that if I get an injector fault I can just switch the corresponding one that I need without having to get it reprogrammed.
Click to expand...

Thats not right, the timing is all worked out by the ECU, which calculates the injection point from the missing teeth in the crankshaft toothed wheel.

The injector code has to do with the actual fuel flow rate from the injector. Due to production tolerances, this varies from injector to injector, so they are tested at manufacture, and then graded accordingly. When you input the injector code, using testbook (or equivalent), you are telling the ECU the injectors flow rate characteristic. This could well include a small timing trim, but that would only be to take account of different valve open/close times.

The code is then stored in the ECU, for that injector location. Therefore if you swapped heads over, then unless the new head had exactly the same injector codes, you'd need to reprogram the ECU.
 
landy.man said:
Thats not right, the timing is all worked out by the ECU, which calculates the injection point from the missing teeth in the crankshaft toothed wheel.

The injector code has to do with the actual fuel flow rate from the injector. Due to production tolerances, this varies from injector to injector, so they are tested at manufacture, and then graded accordingly. When you input the injector code, using testbook (or equivalent), you are telling the ECU the injectors flow rate characteristic. This could well include a small timing trim, but that would only be to take account of different valve open/close times.

The code is then stored in the ECU, for that injector location. Therefore if you swapped heads over, then unless the new head had exactly the same injector codes, you'd need to reprogram the ECU.
Click to expand...
Spot on. Could not have said it better myself. Only small point is that the flywheel has drillings around the circumference and not missing teeth to gauge crankshaft position.
 
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