Which engine?

[lloydie71]

I'm planning an engine swap for my jx syncro which is very tired. I've got a 1Z and an AHU in dead golf estates at home. Does anyone have views on which engine would be best for the transplant?

[ratinyho]

If the 1z has no immobilser (no chip in key, 93/94 models) its slightly easier to wire up. The ahu has a fractionally larger turbo i think. If your competent to fit either just go with the lowest mileage/best service history engine as you won't notice a difference in them driving wise.

[max and caddy]

Nothing in it really, fit one and keep the other for spare. As stated the early 1z has no immo...but the later ecu does but also is a bit cleverer....not sure the difference is that great but I personally would go with the later option and have the immo as well.

[lloydie71]

Thanks guys,

millage is roughly the same on both, 150K. I've got history on the 1999 AHU back to about 70K but the oil light flashes on start up 4-5 times, possible oil pump or big end issues (i fitted new sensors which made no difference). The 94-95 1Z is pretty much unknown but doesn't appear to have any issues. They are both 90hp, is one easier to 'chip' to 110hp than the other?

thanks again,
Lloyd.

[ninja.turtle007]

AHU with a Vnt turbo and .23 nozzles.