Thread: 16 p to 10 p engine swap

Originally Posted by DazzaTD5

If you want a simple answer as one or two here have mentioned...

Fit the 10P engine in complete, don't mess with it.

A friend of mine did that in his Eu3 Defender, lots of black smoke and EGTs up to 800... swapped the injectors from the old engine which was cracked and everything went back to normal hence my first reply in this topic, green tops will happily work with Eu2 ECU but not the other way around

Originally Posted by DazzaTD5

If you want a simple answer as one or two here have mentioned...

Fit the 10P engine in complete, don't mess with it.

complete with the 10p ecu or is it ok to use the eu3 ecu that is on the vehicle? (assuming that it was not part of the swap)

Originally Posted by sierrafery

A friend of mine did that in his Eu3 Defender, lots of black smoke and EGTs up to 800... swapped the injectors from the old engine which was cracked and everything went back to normal hence my first reply in this topic, green tops will happily work with Eu2 ECU but not the other way around

trying to get my head around this, I'd have thought it would be the other way around as the eu3 would be putting out a shorter injector pulse due the higher fuel pressure (all other thing being equal). ie, running eu2 injectors on a eu3 mapped NNN would be under fuelling

All EU2 or all EU3 would be the answer.

I'm only aware of 2 motors as well.

10p.

Everything Else.

10p is EU2.

Everything else is EU3.

Originally Posted by Discosux

trying to get my head around this, I'd have thought it would be the other way around as the eu3 would be putting out a shorter injector pulse due the higher fuel pressure (all other thing being equal). ie, eu2 injectors on a eu3 mapped NNN would be under fuelling

Maybe the nozzle size is smaller, which provides better atomised fuel, but requires higher operating pressure and pulse width.

If you research injector performance and effect of pressures, nozzle size/shape/pattern, and injector angle etc etc etc, you will see why trying to run the wrong injectors is "awkward".

Originally Posted by shack

Maybe the nozzle size is smaller, which provides better atomised fuel, but requires higher operating pressure and pulse width.

If you research injector performance and effect of pressures, nozzle size/shape/pattern, and injector angle etc etc etc, you will see why trying to run the wrong injectors is "awkward".

Are there major differences with injection times between green top and black top maps?
From what i understand these tables are pretty much a constant, as in all the fuelling calcs are done based on them as a reference.
(not saying that duration doesn't change, but that the basis for the pulse calc width is set in stone)

comparing eu2 and eu3 tables would give an answer, maybe?

Originally Posted by sierrafery

A friend of mine did that in his Eu3 Defender, lots of black smoke and EGTs up to 800... swapped the injectors from the old engine which was cracked and everything went back to normal hence my first reply in this topic, green tops will happily work with Eu2 ECU but not the other way around

Sure no doubt, and I've done half a dozen of 10P in last model D2s and they have been fine.

Originally Posted by Discosux

complete with the 10p ecu or is it ok to use the eu3 ecu that is on the vehicle? (assuming that it was not part of the swap)

yes complete, as in with its ecu