Hi I know its a old thread but I am curious about it and may plan to swap my 1KR FE with 2NZFE 1300cc ,I have a question though about the cooling system and Air conditioning system, do we also need to change them?
As I know 1KR FE has a control Valve type compressor which is controlled directly by the ECU also the cooling system is a bit different in 1KR FE because there are two Tee shape hose pipes are connected to the engine which are used to cool the K410 CVT transmission, can we manage with the same compressor and cooling system with 2NZ-FE or do we need to change them, please let me know.
Also what about the ABS brakes? will the existing ABS unit be compatible with the 1NZ FE Engine ECU?