Re: 156 Radiator Replacement
It's fairly easy but very long winded and mine is an auto. I wasn't going to remove the bumper but didn't have room to slide the fans out after removing them so intake pipe off,front bumper off,bonnet slam panel off.Fans out and separate the rad from air con rad. (q-system has another rad under the nearside wing for the box but it's not in the way).
This is the ideal time to remove the air box,change the element and repair the box too. I did my thermostat as well.
Drain the coolant and remove the hoses,if you're lucky they'll already be jubilee clip fittings. Slide the rad out the top. There's a 90 degree elbow on the bottom connection which has to be transferred to the new rad. It is plastic and held on by a metal ring,with two protusions on opposite sides,squeeze these together (they're quick release clips) and remove the elbow. After transferring this pull the elbow slightly away from the rad to make a good seal on the lip, I had a small leak afterwards and this cured it. Refit rad and reassemble in reverse order.
Don't forget to refill system afterwards, I had both injector and gearbox lights on afterwards but spotted a loose connection and rectified it.The lights went out on their own.
You'll probably be amazed at how much of the rad is missing the fins, oh and I didn't mention the undertray as I don't have one.