I'm considering buying a S3 engine to have fitted in my mk5 golf, currently i have a ko4 conversion on my gti but need to replace the turbo so i thought that maybe it's a good idea to replace everything in the quest for a stronger and more reliable set up.
I would like some advice from the technical guys here on what i should be aware of and what to look out for when buying a second hand engine, every classified advert i read states low mileage etc but how can these guys who sell prove that they are genuine low mileage should they come with any kind of paperwork??
Could the experts out there please advise me what i should be looking for and what questions should i be asking the seller to make sure i end up with another can of worms.
Any advice on conversions no matter how basic would be gratefully received as i'm completely clueless when it comes to these kind of things and would really like to avoid any costly amateur mistakes.
With the replacement S3 engine would i need it to be complete with loom and ecu or could i use what's is currently on my mk5, I'm guessing though that i would need it to come with the s3 ecu as the engines are slightly different.
Thanks all