temp was monitored very cautiously indeed and it was run with a full coolant system all be it a no radiator affair, it did quieten down a lot but really couldn't run it for long, if in doubt err on the side of caution. still being cautious I'm going to investigate the engine further. It has stood for a year as best I can fathom. It is believed oilyhands 'DVA Power' has done the work but without a customer name Dave has struggled to find any record. Having removed it now for chassis repair I can see now it hasn't any flow work to the head, so solid lifters and wild mods are unlikely, the body was cut for a 4-2-1 manifold, but had a standard exhaust and the bolts for the manifold were not particularly tight, so it may be possible it had some level of returning to stock before it went to the insurers assessor. Speculation I know.. Sounded to me a like it could have been piston slap, sounded more like that than hydraulic tappets, more like a diesel idle than a petrol, again it did quieten down, damn forgot to do another video. :( Now its all out I am wondering about an engine swap to 1.8 or head upgrade, I have just purchased some Rover VHPD throttle bodies and am thinking wether or not to upgrade the engine further whilst going through the expense of getting it mapped K6 ecu etc. The car at some point was a members car, H7 VRN previously GK53 FZT, I'd love to find them and get some background on the car. Cheers for the input thus far guys!