Took it to the Ford RSOC day at castle combe today, engine was spot on, pulling really well, but the handling still terrible despite changing:
Track rods
Track rod ends
Bottom ball joints
Powerflex bottom arm bushes
And having the geo set appropriately.
Was thinking it must be either the steering rack or the strut top mounts.
Then after the trackday I went to collect a gearbox from Russ16v off here and I said he could take the car out for a drive, he was pretty impressed by the engine, but very unimpressed with the handling, lol
Luckily though, him and his mate Dan who was there helping him change an engine (and who happens to be an ex renault mechanic who worked on 172s a lot when he was at the main dealer) had a suggestion, that it would be the bushes that mount the steering rack to the car.
They leant me a ramp and we had a good look and sure enough thats exactly what it is, the whole steering rack is moving left and right a couple of mm so thats why the steering is so damn vague and totally un-172 like.
So I'll order up a set of new steering rack bushes to fit and hopefully that will sort the handling now as everything else is done anyway
Porkie got quite a good video of him following me around for a lap or so on track, including a couple of "moments" where you can see just how badly mine was handling, I will upload it at some point this evening or tomorrow when I get a chance.
So all in all a bit of a crap trackday in that I only did a couple of sessions before deciding it wasnt worth risking anymore due to the handling issues, but on the whole a good day as the engine was faultless yet again and at least now it looks like we know exactly is up with the handling