v40 t4 engine swap problems

p40l · Post by **p40l** » 02 Feb 2011, 14:26

hi there,i currently have a 2001 v40 t4 with the B4202t5 2.0 engine.iam having to replace the engine as the big end bearings are away on it.i already have a B4194t 1.9 t4 engine sitting there and wandered if would just be a straight swap.ive been told that it would but i will have to get my ecu remapped.any help on this will be greatly appreciated

p40l · Post by **p40l** » 10 Feb 2011, 12:41

take it thats a No then guys?

Volvon · Post by **Volvon** » 11 Feb 2011, 11:01

I don't know too much about the ECU pal, but I do know they use the exact same radiator, fans, aircon radiator etc. The intercooler is very slightly different so I don't know if that will work with the P1 engine. Good luck!

Post by **jimmy57** » 11 Feb 2011, 16:21

I looked through spec book on those two and it looks like injectors are only engine management component that is different. I think your old injectors in the new motor fixes any incompatibility problems. The engine performance may not be optimized since ignition timing programs may differ but it will be roadworthy in spite of issues like that

p40l · Post by **p40l** » 12 Feb 2011, 05:59

thanks for your replies.were going to be swapping over engines this weekend so will keep you posted on how it went incase anyone else has to do this.the injectors being different is interesting as nobody else has mentioned this but it makes sense.fingers crossed, thanks guys

p40l · Post by **p40l** » 16 Feb 2011, 11:51

finally a few chapped knuckles later and the new engine is in.there wasnt any problems and everything mated up nicely,we changed injectors over from old engine and it runs fine although i do have a performance issue it seems to be a bit slower like you said.do you know can the ignition timing be sorted out maybe a remap? thanks

Post by **jimmy57** » 16 Feb 2011, 21:41

You may find some outfit that can do ECM performance re-flashing. You may try adjusting wastegate rod. Shorten rod 2 or 3 turns and see what that does.
IS the turbo from old engine in usuable condition?
The T4 engine turbo may be a bigger unit worth a bit of OOMPH.

p40l · Post by **p40l** » 19 Feb 2011, 01:28

i will try adjusting the wastegate rod,the seals have gone in the old turbo but it is the light pressure one anyway.the one fitted to the engine just now is the high pressure turbo.am i right in saying this is the better of the 2 turbo units? thanks

Post by **jimmy57** » 19 Feb 2011, 09:26

I guess I had the engine designation crossed up. I thought it was a low pressure engine replacing a high pressure/higher output engine. Maybe the original injectors should be put back in the new engine first to see if that wakes things up without hurting idle and cold start.