I have a 2001 MK4 1.4 16 valve which failed the MOT on emissions, looked over the car and it has a knock from the engine around 2500 revs, the owner also informs me it uses a lot of oil so Im guessing its piston slap, my question is Im thinking of buying this from him and fitting another engine and was looking at a 1.8 non turbo, would this fit and what would I need to change / modify?
any advice would be apprieciated,