so today got turbo pipe fitted it and before sticking front all back on ran the car up, ie started first time once fuel primed and the normal smokey as had so much oil in the exhaust and used a lot in the rebuilding of engine this cleared in 10 minutes or so, i then just let it idle for well over hour and half while diagnostics is plugged in and live data running like to know whats going on from the off just in case something is wrong , i also on first start up have the oil filler cap off and check oil is coming to top of engine and it is i also cracked off the water top pipe to turbo let any air out, i also unscrew the bleed plastic screw on top of the thermostat housing let any air out of there as well, then just let it build heat while watching the temps on live data, i also watch the smooth running and cylinder misfire options for all 4 cylinders as you can see on below pics all are the same and all perfect, also it shows the injectors duty's number 1 is slightly worn but will prob clean up with can of seafoam in fuel tank and some good runs,, also i check as the pic below shown vanos actual and prescribed positions and you can see are perfect think 21 degrees matched or within 1 degree is perfect to be honest. ha ha not bad when it took me 15 minutes to set chain up etc and cheated never used the dummy tensioner lent my kit to a mate and he cant find at mo,,, so there you go its poss to set them up without it just need to do the bottom crank bolt up first and also do the stretch part at same time then time the engine from the camshaft sprockets with spring tensioner fully in, ie set at 20nm rotate 4 times then re-lock if locks drop on then its fine, also must hold both cam shafts with a 27mm spanner and must not let turn when stretching the bolts,
also done a compression test on hot got 190psi on all 4 the same after a hour running so would say rings went well there no crankcase pressure either and not chuffing from the oil filler,, also put my ear to sump and sounds perfect no rattles etc,,, still have a few cam lifters slight tapping but as the hour went by got nearly silent now as the oil gets thin with heat and pushes them out etc, one thing have noticed got a high pressure fuel pump fault code came up after first 20 minutes but when cleared not came back but time will tell if there is further issues, all water pipes are fairly soft when car is at 90c and both rad pipes were nice and hot etc, when switched off could hear the turbo aux coolant pump working i checked it was pumping by loosen off top coolant union on turbo and water sprayed out so, so far all looks on track,, all left to do now is put front back on it and test drive etc them map it and delete software decat,
when i was rebuilding it i got new piston ring set same rings used in later n18 and b series bmw car ie latest spec piston rings, these are black sprung steal compression rings and very odd looking oil control rings that are plastic carbon stuff where the old rings were steal very thin metal rings in 3 pieces the new oil ring is one piece with a spring around it as such,, glad never honed the bores ie used scotchbrite just to de=glaze on hone tool as would think if bore were to course it would wear them away in no time..