Thought it's about time I put a project page for this, bought back in May this year but not having much luck with it so far.
The 1159 was replaced with a 1256 that 'needed a new oil pressure switch' when i bought it and after only a couple of hundred miles it got very tappety on my way to my local club meet. I was on the motorway so couldn't really pull over, then the oil light started flickering and engine lots most of its power. Managed to get it home but it developed a nasty rattle from the bottom end.
Picked up what i'm told is a 22k 1159 engine and gearbox and after checking the clutch we found that was soaked in oil, apparently due to the way it had been stored. So got a new clutch kit and fitted that over the weekend, used the CD150 from the old engine as the down draught leaked. Had some overheating issues so flushed the system through, replaced all the hoses, thermostat and had the rad re-cored.
It ran fine after that but always idled high no matter what you did to it. Checked the timing as it was way out and now it idles fine, however then it decided to develop a misfire! I changed the dizzy cap and rotor yesterday even though they were fine and it cleared up. Sorted out the HT leads as they were all touching and now the misfire is back!
Got some new leads on order as well as an electronic ignition kit so hoping that does it. Booked it in to the OhSoRetro show for next Sunday a while back but can't say that i'll be taking it yet...