Thread: 16 p to 10 p engine swap

Thanks mate

I just want to clarify where I'm coming from for those that might be interested. I'm not the best at expressing thoughts.

- it's kind of been decided that there's no difference between the eu2 donk and the eu3 apart from..
-injector pressure
-injector rocker ratio
-injector angle (purely to correct contact / side load geometry due to higher rocker ratio. Not relevant)
All other things been equal - as in a rewire to bring the eu2 up to eu3 sensor spec <- this is the important bit

Assuming that the eu3 injectors are linear in their fuel delivery and that the eu2 injectors are also linear...
ie - 1ms = 1mg, 2 ms =2mg, 3ms=3mg (as an example)
There is only one parameter left to separate the two maps. The injector pulse width... (within reason, yes a shorter pulse will have more timing flexibility at extreme revs and the higher pressure will allow better atomisation of the fuel) So there will be a small? difference
I cant see going down this road causing major fuelling issues that couldn't be compensated for in the injector PW map.

If the injectors aren't linear in fuel / time then all bets are off, Ill go away. Though I'm pretty sure diesel cant be compressed, so in my head it should be linear, disregarding engagement times etc (separate tables, already compensated for)

I can understand why LR went with the original maps with their replacement NNN ecus for the eu2 spec motors, as rewiring the TPS and airbox sensor would be a PITA for the dealers, But why aren't the aftermarket Mapping suppliers offering it? It's not a big deal for backyard hacks to rewire a couple of sensors.

And yes - i'm just ****ed off because I cant get a decent ECU for a 99 manual TD5

Originally Posted by jimbob

How did this engine swap go??
I’m looking to do the same thing. From what I can understand I need to swap the complete motor and ecu from the doner vehicle and it all should work properly.

m̶o̶t̶o̶r̶, e̶c̶u̶, e̶n̶g̶i̶n̶e̶ h̶a̶r̶n̶e̶s̶s̶, a̶i̶r̶b̶o̶x̶ l̶i̶d̶ a̶n̶d̶ s̶e̶n̶s̶o̶r̶ a̶n̶d̶ i̶t̶ w̶o̶r̶k̶s̶ f̶i̶n̶e̶ j̶u̶s̶t̶ n̶e̶e̶d̶ t̶o̶ s̶e̶t̶ t̶h̶e̶ E̶C̶U̶ t̶o̶ 2̶ t̶r̶a̶c̶k̶ a̶c̶c̶e̶l̶e̶r̶a̶t̶o̶r̶. D̶e̶p̶e̶n̶d̶i̶n̶g̶ o̶n̶ w̶h̶a̶t̶'s̶ b̶e̶e̶n̶ p̶l̶a̶y̶e̶d̶ w̶i̶t̶h̶ s̶o̶m̶e̶ s̶w̶a̶p̶p̶i̶n̶g̶ o̶f̶ c̶o̶o̶l̶a̶n̶t̶ h̶o̶s̶e̶'s̶ m̶i̶g̶h̶t̶ b̶e̶ r̶e̶q̶u̶i̶r̶e̶d̶ b̶u̶t̶ I̶ j̶u̶s̶t̶ r̶a̶n̶ m̶i̶n̶e̶ a̶s̶ 1̶0̶p̶ s̶p̶e̶c̶ s̶o̶ n̶o̶ e̶g̶r̶ c̶o̶o̶l̶e̶r̶, o̶l̶d̶ s̶t̶y̶l̶e̶ f̶u̶e̶l̶ c̶o̶o̶l̶e̶r̶ a̶n̶d̶ n̶o̶ c̶o̶o̶l̶a̶n̶t̶ f̶e̶e̶d̶ t̶o̶ o̶i̶l̶ c̶o̶o̶l̶e̶r̶.

oops, misread title. I've done 16p into 10p car, would assume the opposite applies. Just don't overthink it and swap complete engines and relevant bits.