BMW N43 engine dismantle, look see and measure

Taking all the parts off and seeing what's left.

[@Yuliyann]

Is possible to put new sleeves to this engine ?

[@justmakeitwork5005]

I don't believe so as the block is some form of aluminium

[@dj0men666]

Oh lordy - more issues with the N43... Makes me wonder is it worth messing with the bloody things hehe... All seems a fun idea until you get in the weeds. Just dropped by to watch something again and seen these. Mines still up on axel stands with the guts hanging out to do the rod bearings but not had time to mess with it but psyching myself up for it again! Ive got the engine of mounts but not undone the crank bolt - do you think it will undo off the mounts? Does the oil pump come off ok while the timing chain still in place with the crank? Do you just need to lock the cams and lock the pump then remove? Thats where im at and unsure 100% as not clear in manuals etc doing this and i know you did the bearings in situ like this.

[@justmakeitwork5005]

I've done a rebuild with a 'scrapyard' block off ebay, about to put it back in, hit and hope. You don't need to undo the crank bolt to change the rod bearings, just take the sprocket off the oil pump, (left hand thread!)

[@dj0men666]

@@justmakeitwork5005 yeah i managed to get past this now. One of the journals a bit marked so im in polishing mode atm and waiting for bearongs and plastigauge kit. Ive also a damaged bolt from the oil pump… did u put new bolts in the rods and oil pump? Struggling to find oil pump bolts. I need the crack bolt off to do the timing chain. Might leave till end if it wont break wuthout much movement of engine. Dont wanna bend anthing. Hope your block is a good un. 👍

[@justmakeitwork5005]

@@dj0men666 thank you, I did new rod bolts from here www.schmiedmann.com/ good luck!

[@Framus-wm3ye]

Why don't you buy a Honda K20 engine, do some custom mods and you'll have a car that will go on forever and not go wrong? I don't think it's been done before in a BMW.............

[@justmakeitwork5005]

lol......sounds like you just want to get me into more trouble!

[@arvidhaug5283]

Find another engine block? Total permissible wear tolerance between piston an cylinder is 0,15mm. And cylinder 2 and 3 is only 0,01mm out of tolerance.

[@justmakeitwork5005]

I believe the maximum of 0.01mm is for ovality and taper of the cylinder bore

[@arvidhaug5283]

Yeah I see now your measures are out on the ovality, but you could change the sleeves you know.

[@justmakeitwork5005]

@@arvidhaug5283 I didn't think that was a thing as it's an aluminium block. Either way I picked up another block for £120 it's in the car

[@invtrk1046]

I have the same engine mate. Did you have a problem with the EGR? Was it full of oil?

[@justmakeitwork5005]

No just coked up

[@bigdeal87]

Mine too but its not really necessary

[@bigdeal87]

How did the piston bearings look?

[@justmakeitwork5005]

Fine as I'd already changed them, I put the replacements back in