Changing engine on a 2007 Impreza 1.5

[Pdillon]

So I have a 2007 Impreza 1.5 

blown timing belt

1/ how bad is internal damage likely to be

2/ can I just switch engine to a 2.0 or 2.5 without much messing around

 

sentimental attachment!!

[Jay762]

wow sorry to hear that - timing belt could mean valves have met pistons and you have many curved items that are supposed to be straight

I wouldnt try and dissuade you from an engine swop however you would def need a remap plus if you went 2.5 I think you would end up having to change everything to do with air coming in exhaust going out and the fuel supply. 

I would consider a 2.0 change but again map, fuel system all may need looking at